Consolidated Product Manual December Screw-in Cartridge Valves

Transcription

1 Consolidated Product Manual December 8 Screw-in Cartridge Valves

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3 INTRODUCTION QUICK SELECTION GUIDE RELIEF VALVES DUAL RELIEF VALVES SEQUENCE VALVES PRESSURE REDUCING VALVES MOTION CONTROL VALVES including BoomLoc hose rupture valves CHECK VALVES NEEDLE / RESTRICTOR VALVES FLOW REGULATORS FLOW DIVIDER / COMBINER VALVES DIRECTIONAL CONTROL VALVES UNLOADING VALVES SHUTTLE VALVES CETOP MODULAR STACKING VALVES MOTOR MOUNTED VALVES HYDRAULIC INTEGRATED CIRCUITS CAVITIES INDEX Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: Fax:

4 INTRODUCTION LIMITED WARRANTY /. (The Company) warrants that the items sold shall be free from defects in material and workmanship for a period of months from date of shipment from the Company. Parts manufactured by a third party and supplied by The Company as part of a system or on their own shall be warranted to the extent of the original supplier's warranty and no more. The Company will undertake to remedy any defect resulting from faulty design, material or workmanship, provided that the Company shall not be required to expend money, services or material in any amounts exceeding the value of the original invoice for the said system or component. The Company will undertake to repair or replace the faulty system or component at the Company s discretion within a reasonable time scale agreed between the two parties. The Company shall not be liable for defects arising from materials provided by, or design stipulated or specified by the purchaser. The Company shall further not be liable for defects caused by faulty maintenance, incorrect erection or faulty repair by the purchaser. The Company will only be liable within the terms of warranty for defects which occur in connection with the proper use of the products within the specifications laid down for the products. The Company shall not be liable for any damage caused by any product after it has been delivered, nor shall the Company be liable for any damage to products manufactured by the purchaser, or products of which the purchaser's product forms a part, or product from a third party which forms part of the purchaser's product. Goods may only be returned to the company upon prior written consent and at the Company's discretion shall be replaced, repaired or credited at the original invoiced price. The Company shall have no liability for any loss of profits, or any consequential loss, anticipated profits or any labour cost, whether incurred by the purchaser in replacing defective parts or otherwise. Any claim under this warranty must be made in writing within days of the discovery of the problem or within days of the end of the warranty period, whichever is sooner. THE COMPANY HEREBY DISCLAIMS ANY AND ALL OTHER WARRANTIES, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Notwithstanding anything to the contrary in this warranty, or in any other agreement, purchase order, or other document, the Company shall not be responsible or liable for any consequential or incidental damages incurred or suffered by any purchaser, any customer of a purchaser or any other person in connection with the sale, marketing, distribution, use or any other action relating to the products. Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) 974 7

5 MATERIALS Cartridge bodies are manufactured from high grade cold drawn steel bar, with the internal working parts hardened and ground for maximum performance and durability. Our line bodies, Hydraulic Integrated Circuit blocks and special bodies are manufactured from high strength, wrought aluminium bar and mild steel or stainless steel, dependant upon the exact requirements of individual applications. Various specialised coatings/finishes are obtainable for when environmentally unfriendly conditions are a consideration. For complete specifications and compatibilities, please consult our technical department. It is recommended that for pressures above bar ( psi) steel bodies are used. Whilst in most cases the aluminium bodies are strong enough, if transient peak pressures are encountered frequently, there is a possibility of fatigue. PORTS The ports on all our bodies are BSP (parallel) as standard and range in size from /4" to /4". SAE O Ring and NPT ports are available on request. SEALS We use Nitrile as standard for temperatures of - C to +9 C (unless otherwise stated). Viton seals are available on request. Polyurethane seals are also available on some valves but care must be taken in their application with regard to fluid compatibility. TEMPERATURE RANGES Temperature ranges quoted throughout this catalogue relate to the seal material only. The viscosity index of the fluid should also be taken into account when selecting a valve, if in doubt please contact our technical department. FLUIDS Recommended fluid is mineral oil. NOTE: All our test performances are carried out by using hydraulic oil with a viscosity of 4cSt at 4 C. For water based fluids, ie, 95/5 and 6/4 emulsion consult factory. FILTRATION Our valves utilise precision hydraulic components and we recommend a filtration level of between 5 and 5 microns, to produce a cleanliness level of BS554/4 Class 8/, dependant on the type of valve used. Replace filter elements regularly, try to avoid filter bypass condition - special attention should also be paid to filtration when first commissioning the system or machine, when contamination levels are high. TAMPERPROOF DEVICES Various tamperproofing methods are available upon request for our range of cartridges and valves. CARTRIDGE VALVE INSTALLATION The correct machining of cavities to suit our range of cartridges is critical. Cavity tools are available for sale or hire and certified drawings are available upon request. All drawings and information contained within this catalogue are for guidance only. Where dimensions and actual valve usage is critical, please consult Integrated Hydraulics for full specifications and compatibilities. We reserve the right to alter specifications without notice or incurring obligation. NOTE: It is important that each designer analyses all aspects of their application including consequences of any failure and review the information concerning the product or system in the current product catalogue. The responsibility for final selection rests with the customer. TORQUE FIGURES The torque values stated in this catalogue are for testing purposes only. Assembly tightening torque depends on many factors, including lubrication, coating and surface finish. Contact main office for further information. ADJUSTMENT The adjustment range and Max setting figures shown throughout this catalogue give the design range for each valve, higher or lower values may be attainable but should not be used without first contacting our Engineering department. Setting must ALWAYS be carried out using an appropriate gauge and it must NOT be assumed that screwing an adjuster to its maximum or minimum position will yield the maximum or minimum stated design setting for that valve. PRESSURE EQUIPMENT DIRECTIVE All pressure control valves manufactured by Integrated Hydraulics are designed to be "Pressure Accessories" in accordance with article section of the Pressure Equipment Directive and Sound Engineering Practice and sold in good faith as such. For "Safety Accessories" as defined in article section.4 of the Pressure Equipment Directive please contact the UK Technical Sales Department.

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7 QUICK SELECTION GUIDE SECTION - RELIEF VALVES RELIEF VALVE DIRECT ACTING SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE GR-P-*S CARTRIDGE 4-7 GR5 /8-7 GR6 /8 / /4-7 GR6-P-*S CARTRIDGE GR65 /8 / -6 GR66 / -6 GR-P-*S CARTRIDGE GR45 / /4-7 GR5 /8 / /4-7 GR55-7 DIFFERENTIAL AREA POPPET STYLE PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE LR-F-*S CARTRIDGE LR5 /4-9 VENTABLE RELIEF VALVE PILOT OPERATED SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE VR-P-*S CARTRIDGE 5 - VR5 /4 - VR-P-*S CARTRIDGE 5 - VR5 - SECTION - DUAL RELIEF VALVES DUAL RELIEF VALVE SINGLE CARTRIDGE DIFFERENTIAL AREA POPPET STYLE PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CLLR5-F-*S CARTRIDGE CLLR55 /8 / -5 CLLR-F-*S CARTRIDGE CLLR5 /4 - CLLR55 /4 - Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) F

8 QUICK SELECTION GUIDE SECTION 4 - SEQUENCE VALVES SEQUENCE VALVE * CHECK VALVE IN BODY * * PILOT OPERATED SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE PS6-P-*S CARTRIDGE PS65 /8 / 4- PS66 / 4- PS-P-*S CARTRIDGE PS45 /8 / /4 4-4 PS-P-*S CARTRIDGE PS5 4-5 SEQUENCE VALVE WITH REVERSE FLOW SEQUENCE VALVE * CHECK VALVE IN BODY UNLOADING SEQUENCE VALVE * * PILOT OPERATED/ DIRECTING ACTING SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE PSC-F-*S CARTRIDGE 4-6 PSC5 /8 / 4-6 PSC-P-*S CARTRIDGE PSC45 /8 / /4 4-7 DIRECTING ACTING SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE DS-P-*S CARTRIDGE 4 4- DS5 /8 / 4- DS6-P-*S CARTRIDGE DS65 /8 / 4- DS66 / 4- DS-P-*S CARTRIDGE DS45 /8 / /4 4- DS55 /4 4- PILOT OPERATED SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE UPS-P-*S CARTRIDGE UPS45 /8 / /4 4-8 UPS55 /4 4-8 * CHECK VALVE IN BODY SECTION 5 - PRESSURE REDUCING VALVES PRESSURE REDUCING VALVE PILOT OPERATED SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE PA-P-*S CARTRIDGE PA5 5-4 Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) F

9 QUICK SELECTION GUIDE SECTION 6 - MOTION CONTROL VALVES OVERCENTRE VALVE OVERCENTRE VALVE BALANCED RELIEF OVERCENTRE VALVE FULLY BALANCED OVERCENTRE VALVE WITH COUNTERBALANCE PILOT ASSISTED RELIEF WITH CHECK PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CE CARTRIDGE 5 6- CE5 /8 6- CE9 CARTRIDGE CE95 / 6-5 CE CARTRIDGE CE5 /4 6-8 CE4 CARTRIDGE CE45 /4 6-5 CE CARTRIDGE CE5 /4 6-4 PILOT ASSISTED POPPET RELIEF PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CER CARTRIDGE 5 6- CER5 /8 6- CER9 CARTRIDGE CER95 / 6-6 CER4 CARTRIDGE CER45 /4 6- PILOT ASSISTED POPPET RELIEF CEB CARTRIDGE 5 6- CEB5 /8 6- CEB9 CARTRIDGE CEB95 / 6-7 CEBD9 CARTRIDGE CEB CARTRIDGE CEB5 /4 6-9 CEBD CARTRIDGE CEB CARTRIDGE CEB5 /4 6-5 CEBD CARTRIDGE PILOT ASSISTED POPPET RELIEF PORT SIZE PORT SIZE Q NOM (L/min) Q NOM (L/min) P MAX (Bar) P MAX (Bar) PAGE PAGE CEL CARTRIDGE CEL5 /8 6-5 CEL9 CARTRIDGE CEL95 / 6-75 CEL4 CARTRIDGE CEL45 /4 6-5 Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) G

10 QUICK SELECTION GUIDE SECTION 6 - MOTION CONTROL VALVES OVERCENTRE VALVE ZERO DIFFERENTIAL DUAL OVERCENTRE VALVE DUAL OVERCENTRE VALVE BALANCED RELIEF DUAL OVERCENTRE VALVE FULLY BALANCED PILOT ASSISTED POPPET RELEIF PILOT ASSISTED POPPET RELIEF PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CEE4 / CEE95 / CEE5 / CEE45 / CEE5 / PILOT ASSISTED POPPET RELIEF PORT SIZE PORT SIZE Q NOM (L/min) Q NOM (L/min) P MAX (Bar) P MAX (Bar) PAGE CPB CARTRIDGE CPB5 /8 6-7 CPBD CARTRIDGE CPBD9 CARTRIDGE CPBD CARTRIDGE CPBD CARTRIDGE PAGE CEER4 / CEER95 / CEER45 / PILOT ASSISTED POPPET RELIEF PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CEEB4 / CEEB95 / CEEB5 / CEEB5 / DUAL OVERCENTRE VALVE WITH COUNTERBALANCE PILOT ASSISTED POPPET RELIEF PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CEEL4 / CEEL95 / CEEL45 / OVERCENTRE VALVES BANJO MOUNTED PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CBE*5 / CBE*5 / Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) E

11 QUICK SELECTION GUIDE SECTION 6 - MOTION CONTROL VALVES OVERCENTRE INTERNAL PILOT THROUGH PORTED PILOT ASSISTED POPPET RELIEF PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CE*6 / CE*56 / CE56 / OVERCENTRE VALVES GASKET MOUNTED PILOT ASSISTED POPPET RELIEF PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CE*G5 / CE*G5 / CEG5 / DUAL OVERCENTRE VALVE WITH BRAKE SHUTTLE MOTION CONTROL AND LOCK VALVE MOTION CONTROL VALVES WITH BRAKE SHUTTLE HOSE BURST PROTECTION PILOT ASSISTED POPPET RELIEF PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CEESH5 / CEESH95 / CEESH5 / CEESH5 / PILOT ASSISTED POPPET RELIEF CEEC5 / CEEC95 / CEEC CEEC5 / PILOT ASSISTED POPPET RELIEF PORT SIZE PORT SIZE Q NOM (L/min) Q NOM (L/min) P MAX (Bar) P MAX (Bar) PAGE PAGE CEECSH5 / CEECSH95 / CEECSH CEECSH5 / BOOMLOCK PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CEBL / CEBL / SAE FLANGE CEBL / CEBL9 / CEBL5 / CEBL56 /4 SAE FLANGE CEBL56 SAE FLANGE CEBL556 -/4 SAE FLANGE Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) G

12 QUICK SELECTION GUIDE SECTION 7 - CHECK VALVES CHECK VALVES PILOT TO OPEN CHECK VALVES GUIDED POPPET LINE MOUNTED FPR /4 / FPR /8 / FPR / / FPR /4 / FPR FPR./4 / FPR./ / 7- HARDENED POPPET PORT SIZE PORT SIZE Q NOM (L/min) Q NOM (L/min) P MAX (Bar) P MAX (Bar) PAGE PAGE 4CK CARTRIDGE CK5 / CK9 CARTRIDGE CK95 / 7-6 4CKD9 CARTRIDGE CKD95 / 7-6 4CK CARTRIDGE CK5 / CK CARTRIDGE CK5 / KD5 / PILOT TO CLOSE CHECK VALVES HARDENED POPPET PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE 5CK CARTRIDGE 5 7-5CK5 /8 7-5CK CARTRIDGE 5 7-5CK5 /4 7-5CK CARTRIDGE CK5 /4 7- DUAL PILOT OPERATED CHECK VALVES HARDENED POPPET PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE 4CKK4 / CKK95 / CKKD95 / CKK5 / CKK5 / Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) E

13 QUICK SELECTION GUIDE SECTION 9 - FLOW REGULATORS FLOW REGULATOR DIVERTER VALVES SOLENOID SWITCH PRIORITY STYLE PORT SIZE Q RATED (L/min) P MAX (Bar) PAGE FPH55 / FPH95 / FPH FPH FPH5 / Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) E

14 QUICK SELECTION GUIDE SECTION - DIRECTIONAL CONTROL VALVES SOLENOID VALVES -WAY, -POSITION SPOOL/POPPET PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE S9 Poppet CARTRIDGE -7 S9 Poppet /8 / -7 SOLENOID VALVES 4-WAY, -POSITION SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE S57 CARTRIDGE 5-4 S57 CARTRIDGE 4-6 S57 CARTRIDGE 4-8 S574 CARTRIDGE 4-4 S577R CARTRIDGE 7-4 SECTION - PROPORTIONAL VALVES PRESSURE RELIEF VALVES SOLENOID OPERATED PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE PDRA CARTRIDGE.5 5 /-5 PDRA /4 /8 /-5 FLOW CONTROL VALVES SOLENOID OPERATED COMPENSATED PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE PFR 4A CARTRIDGE 8 /9- PFR 4A /4 /8 /9- Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) E

15 QUICK SELECTION GUIDE SECTION - UNLOADING VALVES UNLOADING VALVES PILOT OPERATED SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE UL6 CARTRIDGE UL65 / - PRIORITY UNLOADING VALVES PILOT OPERATED SLIDING SPOOL PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE PUL6 CARTRIDGE PUL65 / - PUL CARTRIDGE 5 - PUL5 - SECTION - SHUTTLE VALVES SHUTTLE VALVE BALL TYPE PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE SH CARTRIDGE 5-5 HOT OIL SHUTTLE VALVE SPOOL TYPE PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE HSH7 CARTRIDGE HSH75 / /4-85 LOGIC ELEMENTS SPOOL TYPE PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE LE4 CARTRIDGE LE45./4./ -5 LEV4 CARTRIDGE LEV45./4./ -8 Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) F

16 QUICK SELECTION GUIDE SECTION 4 - CETOP /5 OVERCENTRE SANDWICH VALVES OVERCENTRE VALVES PILOT ASSISTED WITH RELIEF CHECK PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE ACE*/BCE* Cetop 5 4-5ACE*/5BCE* Cetop DUAL OVERCENTRE VALVES PILOT ASSISTED WITH RELIEF CHECK PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE ABCE* Cetop 5 4-5ABCE* Cetop CHECK VALVES PILOT TO OPEN PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE ACK/BCK Cetop 5 4-5ACK/BCK Cetop DUAL CHECK VALVES PILOT TO OPEN PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE 5ABCK Cetop 5 4-5ABCK Cetop SECTION 5 - MOTOR MOUNTED VALVES Contact office for further details DANFOSS DUAL RELIEF VALVES PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CLLROMP5 / CLLROMS5 / DANFOSS OVERCENTRE VALVES PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE CEEOMP5 / CEEOMS95 / CEOMP5 / CEOMS95 / CEESHOMP5 / CEESHOMS95 / CESHOMP5 / CESHOMS95 / Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) G

17 QUICK SELECTION GUIDE SECTION 6 - HYDRAULIC INTEGRATED CIRCUITS & SPECIAL PRODUCTS HAND PUMP INTEGRATED CIRCUIT PORT SIZE Q NOM (L/min) Contact office for further details P MAX (Bar) PAGE HP7 CARTRIDGE 5 6- HP75 /8 / 5 6- PRESSURE INTENSIFIER INTEGRATED CIRCUIT PORT SIZE Q NOM (L/min) P MAX (Bar) PAGE T6 / Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) H

18 CONTENTS SECTION - RELIEF VALVES This section contains a wide variety of relief valves suitable for most applications, with flows up to 8 litres/min ( US GPM) and pressures up to 4 bar (58 psi). Valves available include direct acting, poppet type reliefs suitable for safety and fast acting requirements and pilot operated valves giving good, accurate control over widely varying flows. SELECTION SECTION SERIES APPLICATION RANGE PAGE GR Direct acting guided piston Low pressure applications for radiator bypass or low pressure close control 4 bar max ( psi) 5 litres/min (4 US GPM) -6 to -7 LR Direct acting differential area, poppet type Ideal for use as a relief where fast action is necessary to protect actuators 5 bar max (5 psi) 8 litres/min ( US GPM) -8 to -9 VR Pilot operated sliding spool, ventable For use as a control valve giving accuracy of setting over a wide band of flow with dump or secondary pressure facility 5 bar max (5 psi) litres/min (5 US GPM) - to - Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) E

19 TYPICAL CIRCUIT EXAMPLES ARC 7VR AR LR SYSTEM RELIEF RELIEF SERVICE LINE RELIEF BYPASS RELIEF PRESSURE EQUIPMENT DIRECTIVE All pressure control valves manufactured by Integrated Hydraulics are designed to be Pressure Accessories in accordance with article section of the Pressure Equipment Directive and Sound Engineering Practice and sold in good faith as such. For Safety Accessories as defined in article section.4 of the Pressure Equipment Directive please contact the UK Technical Sales Department. ADJUSTMENTS The adjustment range and Max setting figures shown throughout this catalogue give the design range for each valve, higher or lower values may be attainable but should not be used without first contacting our Engineering department. Setting must ALWAYS be carried out using an appropriate gauge and it must NOT be assumed that screwing an adjuster to its maximum or minimum position will yield the maximum or minimum stated design setting for that valve. ø6.5 ø7. 8. P - LEAKPROOF SCREW R - HANDKNOB G - TAMPERPROOF CAP F - SCREW Tightening torque of F adjuster locknut - to 5 Nm Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) H

20 RELIEF VALVES Our brave new world of Hydraulics provides technology to industry that is ever improving and more complex. The demand for machines that think for themselves reducing human error have inspired the engineering fraternity to ever greater feats of hydraulic ingenuity. The simple directional valve has become an electronically controlled mechanism that provides fine control to the movement of machinery. The pump has become more efficient by adding feed back controls in the form of pressure compensation and load sensing, providing stable controlled flow to a pre-determined level to reduce energy losses. Even some actuators have built in transducers to provide position feed back completing the loop. It is a shame that when using this modern technology the simpler and most important valve in a system can be as crude as a ball on a seat. The humble relief valve takes a back seat to the point where great effort is made not to allow this valve its rightful roll in providing the ultimate system protection. "Don't let it operate because it is noisy" or "we can not guarantee that the pressure control will be consistent". "The valve opens too soon and does not close quickly enough". From the main system relief to the safety relief there are valves available that are equally advanced in their innovation and technology as the higher profile pumps, directional control valves and actuators. The problem is that many engineers do not understand the reasons for the different designs and their individual applications or how to assess the performance. This article will attempt to throw some light on what is available and where to apply the different designs. It is true that the simplest relief valve is a ball sitting on a seat with a spring keeping it closed until the pressure over the area of the seat is high enough to allow the valve to open and allow flow to pass. The flow capacity is limited by the size of the seat and the pressure difference across the opening. To get more flow across the valve the ball has to move further back against the spring increasing the force and therefore the required pressure. A basic relief valve curve will look like Graph. Graph. Basic relief curve Pressure increase due to spring rate Graph is based on a poppet style direct acting relief. The cracking pressure is the point "A" at which the pressure over the area of the seat is the same as the spring force. The initial opening characteristic "B" depends on the cone angle of the poppet, the second section of the curve "C" depends on the relationship between the design of the poppet and its movement which is effected by the rate of the spring, generally the higher the spring rate the steeper the gradient. As more flow passes through the valve the relief curve will meet the orifice curve "D". The performance of a direct acting relief valve can be altered by innovative poppet design. By using the flow forces to help open the valve the effect of a high rate spring can be reduced and the gradient be kept relatively flat. PRESSURE B C D Initial opening Cracking pressure A Hysterisis Reseat pressure Orifice curve FLOW

21 Figure. DR Direct acting poppet Pressure () Tank () Figure shows a section through a typical relief valve where the poppet design allows for a relatively low pressure rise due to increase in flow. A problem with this type of valve is that too much flow can cause the valve to have a negative pressure rise causing the valve to go unstable with fluctuating pressure. The re-seat and repeatability of the valve depends upon the hysterisis. Internal seals cause friction against the bore as the valve tries to close. If a seal is under pressure then the hysterisis increases, graph. Graph. Relief Curve showing the effect of hysterisis DR-S Bar CRACK PRESSURE FLOW = L/MIN P/BAR PRESSURE VS FLOW Caner : LPM Figure shows a typical pilot operated, spool type relief valve that gives good control over varying flows. This valve, due to its design, allows a high flow to pass with very little rise in inlet pressure. The valve has a good re-seat and good repeatability due to there being no internal seals. A pilot operated relief valve is suitable as a main pressure control but due to the two stage design it is not suitable for safety applications where speed of operation is important. In the case of a rapid increase in inlet pressure the system will be subject to a longer pressure spike than if a direct acting valve where used. Figure. AR pilot operated spool Pressure () Tank () Increasing the flow capacity of a direct acting valve by reducing the area over which the pressure acts is possible, figure shows a differential area poppet type relief valve that has the capability of very fast action and a high flow capacity for its size. The internal seal is subject to inlet pressure so the valve will display relatively poor re-seat characteristics. The design of the poppet is such that as the valve begins to open the flow past the poppet draws oil from the spring chamber (by venturi effect over the small holes in the poppet annulus) causing initial over opening. This removes most of the pressure spike. The valve is therefore highly suitable as protection for actuators. Figure. LR direct acting differential area Pressure () Tank () A poppet valve should not leak more than / cc/min up to the cracking pressure allowing it to be placed in a line where low leakage is important, and performing duties such as a service line relief. A simple relief valve like this will give cost effective relief protection to small systems or where the valve is not the main pressure control but a pressure limiting device. They are not generally suitable for high flows because the spring would have to be of excessively high rate which would give an unacceptably steep relief curve.

22 RELIEF VALVES Graph. Comparison of Pilot and direct acting differential area type opening curves PRESSURE Pilot style Relief Differential Area Relief Speed of Operation TIME MS Graph 4. Opening characteristics of pilot style relief P(t) TEST8 (Z) SEC Graph 5. Opening characteristics of direct acting relief P(t) TEST8 (Z) SEC

23 Figure 4. GR6 Direct acting spool Pressure () Tank () Graph shows a comparison between the typical opening characteristics of a pilot style valve and a differential area direct acting valve with the special poppet described above. The difference between the opening characteristics of a pilot style relief valve and a direct acting spool type relief valve are shown in graph 4 & 5 respectively, graph 4 clearly illustrating the pressure spike permitted by the pilot style valve. Figure 4 shows a spool type direct acting relief valve. These are suitable for low pressure systems where stable or constant operation is required. They provide quiet operation even with fluctuating pressures. The spool opens up a ring of holes in the sleeve that gives a more gradual increase in flow area than a poppet valve. Spool valves will give between 5 and cc/min leakage before they open. From overall pressure control to actuator protection the relief has to be of the correct type to ensure sound performance and component integrity There are also electrically controlled proportional valves available that tie in with electronic systems. That is another subject but they should never be allowed to replace the humble mechanical relief valve, the correct application of which can permit a machine to operate to its optimum performance over a long period. Figure 5. VR Ventable relief Pressure () Tank () Vent () The four main types of relief valve as detailed above cover most applications but there are many variations on a theme that give flexibility to a systems design. Figure 6. UAR Unloading relief Ventable relief valves, figure 5, are used to provide an unloading function, presenting an ability to be remotely operated and the possibility of switching between more than one pressure. Pressure () Tank () Unloading relief valves or 'kick down' valves, figure 6, provide an off load of pressure when the setting is reached, the valve remains fully open until the pressure falls to zero. This removes any force created by an actuator that could cause mechanical damage within a system. In order to simplify the design of a circuit and reduce its cost system designers frequently require a valve to perform additional functions, two such valves are shown below, figure 7 a relief valve in conjunction with bypass check and figure 8 a cross line relief valve. Figure 7. ACR Relief combined with by-pass check Tank () Pressure () Figure 8. CLLR5 Dual relief When designing hydraulic systems it is important to consider the performance of the minor components such as relief valves. These may be minor in cost but they have a major impact in terms of value. A poor relief valve can effect the efficiency and life of a complete machine. From overall pressure control to actuator protection the relief has to be of the correct type to ensure sound performance and component integrity. Pressure () Pressure ()

24 GR SERIES RELIEF VALVE DIRECT ACTING (ISO CAVITY NUMBER: ) GR6 SLIDING SPOOL TYPE PRESSURE () TANK () APPLICATION To limit pressure in a system. Good for continuous duty and accurate pressure control with constant or varying flows. OPERATION The valve is held closed by the spring until pressure on the piston overcomes the valve setting, allowing relief flow to tank through a ring of radial holes. FEATURES High accuracy of pilot operated design. Hardened working parts give long, reliable, trouble-free life. Cartridge construction for installation into your own manifold. SPECIFICATIONS Figures based on: Oil Temp = 4 C Viscosity = 4 cst Rated Flow 6 litres/min (6 US GPM) PRESSURE DROP Max Setting Cartridge Material Body Material 4 bar (6 psi) Working parts hardened and ground steel. External surfaces zinc plated Standard aluminium (up to bar*) Add Suffix 77 for steel option FLOW-US GPM Mounting Position Cavity Number Torque Cartridge into Cavity Unrestricted CVA-- (See Section 7) 45 Nm ( lbs ft) PRESSURE-BAR PRESSURE-PSI Weight Seal Kit Number Recommended Filtration Level GR6 GR65 GR66.8 kg (.4 lbs).6 kg (.8 lbs).48 kg (. lbs) SK696 (Nitrile) SK696V (Viton) BS554/4 Class 8/ (5 micron nominal) Operating Temp Leakage - C to +9 C (Standard seals) 5 bar FLOW LITRES/MIN Nominal Viscosity Range 5 to 5 cst *For applications above bar please consult our technical department or use the steel body option. Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) C

25 CARTRIDGE ONLY COMPLETE VALVE /8 / PORTS BASIC CODE: GR6. 5. MAX HEX SOCKET ADJUST 4. A/F 7. A/F 4. A/F M X.5-6g TANK () BASIC CODE: GR65 Body ONLY part numbers BSP, aluminium /8 A758 / A SAE, aluminium /8 A78 / A78 BSP, steel /8 A SAE, steel / A MAX PRESSURE () HOLE ø9. THRO' 5.8 COMPLETE VALVE / PORTS BASIC CODE: GR66 Body ONLY part numbers BSP, aluminium / B SAE, aluminium / B78 BSP, steel / B MAX SAE, steel / B MOUNTING HOLES ø9. THRO' Where measurements are critical request certified drawings ORDERING CODE EXAMPLE Basic Code GR6 = Cartridge Only GR65 = Cartridge and Body GR66 = Cartridge and Body through ported Adjustment Means P = Leakproof Screw Adjustment R = Handknob Adjustment G = Tamperproof Cap (See page - for dimensions) Port Sizes - Bodied Valves Only W = /8 BSP 6T = /8 SAE 4W = / BSP 8T = / SAE GR** P W We reserve the right to change specifications without notice 4 S Seals S = Nitrile (For use with most industrial hydraulic oils) SV = Viton (For high temperature and most special fluid applications) Pressure 4.8 l/min = 5- bar. Std setting bar 4 = 5-4 bar. Std setting 8 bar Std setting made at 4.8 litres/min -6.F

26 GR SERIES RELIEF VALVE DIRECT ACTING GR TANK () SLIDING SPOOL TYPE PRESSURE () GR TANK () SLIDING SPOOL TYPE PRESSURE () APPLICATION Ideal for low pressure applications, giving good control with fairly constant flow. Also very quiet in operation when applied on low flow or unstable hydraulic systems. OPERATION The valve is held closed by the spring until pressure on the piston overcomes the valve setting, allowing relief flow to tank through a ring of radial holes. PRESSURE DROP 75 FLOW-US GPM GR 5 5 FEATURES Stable, quiet operation. Cartridge construction to give maximum flexibility in mounting. Offering good repeatability and reseat. SPECIFICATIONS Figures based on: Oil Temp = 4 C Viscosity = 4 cst Rated Flow Max Setting Cartridge Material GR GR GR GR litres/min (8 US GPM) 5 litres/min (4 US GPM) 6 bar ( psi) 4 bar (6 psi) Working parts hardened and ground steel. External surfaces zinc plated PRESSURE-BAR PRESSURE-BAR FLOW-US 4 FLOW LITRES/MIN GPM GR 6 9 FLOW LITRES/MIN PRESSURE-PSI PRESSURE-PSI Body Material Mounting Position Cavity Number Torque Cartridge into Cavity Weight Seal Kit Number Recommended Filtration Level Operation Temp Leakage Nominal Viscosity Range Standard aluminium (up to bar*) Add Suffix 77 for steel option Unrestricted A88 (See Section 7) 6 Nm (44 lbs ft) GR/GR GR5/GR45 GR6/GR5 GR55. kg (.7 lbs).54 kg (. lbs).9 kg (. lbs).8 kg (.4 lbs) SK9 (Nitrile) SK9V (Viton) BS554/4 Class 8/ (5 micron nominal) - C to +9 C 5 millilitres/min nominal 5 to 5 cst *For applications above bar please consult our technical department or use the steel body option. Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) D

27 CARTRIDGE ONLY BASIC CODE: GR OR GR 54. MAX HEX SOCKET ADJUST 4. A/F 7. A/F 8.5 A/F COMPLETE VALVE BASIC CODE: GR5 OR GR45 Body ONLY part numbers BSP, aluminium / B485 /4 B954 / /4 PORTS -4 UNS-A. MAX TANK () PRESSURE () COMPLETE VALVE /8 / /4 PORTS COMPLETE VALVE PORTS BASIC CODE: GR6 OR GR5 BASIC CODE: GR55 Body ONLY part numbers BSP, aluminium /8 C84 / C44 /4 C86 SAE, aluminium /8 B784 / C74 /4 B56 BSP, steel / C59 /4 C497 SAE, steel /4 B74 Body ONLY part numbers BSP, aluminium B67 SAE, aluminium B7 BSP, steel B4596 SAE, steel B44 HOLES ø8.7 THRO' MAX MAX Where measurements are critical request certified drawings HOLES ø. THRO' ORDERING CODE EXAMPLE GR** W Basic Code GR / GR = Cartridge Only GR5 / GR45 = Cartridge and Body GR6 / GR5 / GR55 = Cartridge and Body through ported Adjustment Means P = Leakproof Screw Adjustment R = Handknob Adjustment G = Tamperproof Cap (See page - for dimensions) Port Sizes - Bodied Valves Only W = /8 BSP 6T = /8 SAE 4W = / BSP 8T = / SAE 6W = /4 BSP T = /4 SAE 8W = BSP 6T = SAE We reserve the right to change specifications without notice P 6 S Seals S = Nitrile (For use with most industrial hydraulic oils) SV = Viton (For high temperature and most special fluid applications) Pressure 4.8 l/min GR: 7 = 7-7 bar. Std setting 5 bar 6 = 4-6 bar. Std setting 55 bar GR:.6 =.-6 bar. Std setting 6 bar = 5-5 bar. Std setting bar 4 = 5-4 bar. Std setting 8 bar Std setting made at 4.8 litres/min -7.F

28 LR SERIES RELIEF VALVE DIRECT ACTING DIFFERENTIAL AREA LR POPPET TYPE PRESSURE () TANK () APPLICATION Ideal for intermittent duty as protection against overload or surge conditions for all types of actuators. Very fast acting and extremely dirt tolerant. FEATURES Dirt tolerant, robust and consistent with good pressure rise to increase in flow characteristics for a direct acting valve. Cartridge construction provides for maximum flexiblity in mounting at the point where it is most needed. OPERATION Pressure acts over the differentail area between the seat and seal on the poppet. When the pressure exceeds the setting, the valve opens, allowing relief flow to tank, washing contaminant away from the seat. SPECIFICATIONS Figures based on: Oil Temp = 4 C Viscosity = 4 cst Rated Flow Max Setting Cartridge Material 8 litres/min ( US GPM) 5 bar (5 psi) Working parts hardened and ground steel. External surfaces zinc plated PRESSURE DROP Body Material Standard aluminium (up to bar*) Add Suffix 77 for steel option Mounting Position Unrestricted Cavity Number A6 (See Section 7) FLOW-US GPM Torque Cartridge into Cavity Weight Seal Kit Number 5 Nm ( lbs ft) LR LR5.4 kg (. lbs).8 kg (4.6 lbs) SK7 (Nitrile) SK7V (Viton) PRESSURE-BAR PRESSURE-PSI Recommended Filtration Level Operating Temp Leakage Nominal Viscosity Range BS554/4 Class 8/ (5 micron nominal) - C to +9 C millilitre/min nominal (5 dpm) 5 to 5 cst FLOW LITRES/MIN *For applications above bar please consult our technical department or use the steel body option. Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) C

29 CARTRIDGE ONLY BASIC CODE: LR 7. APPROX A/F -5/8- UN-A PRESSURE () TANK () Tightening torque of F adjuster locknut - to 5 Nm COMPLETE VALVE BASIC CODE: LR5 Body ONLY part numbers BSP, aluminium /4 B54 SAE, aluminium /4 B778 /4 PORTS BSP, steel /4 B88 SAE, steel /4 B55 8 MAX HOLES DIA 9MM Where measurements are critical request certified drawings ORDERING CODE EXAMPLE LR*** F W 5 S Basic Code LR = Cartridge Only LR5 = Cartridge and Body Adjustment Means F = Screw Adjustment Port Sizes - Bodied Valves Only W = /4 BSP T = /4 SAE Seals S = Nitrile (For use with most industrial hydraulic oils) SV = Viton (For high temperature and most special fluid applications) Pressure l/min = 5- bar. Std setting bar 5 = 7-5 bar. Std setting 8 bar Std setting made at litres/min We reserve the right to change specifications without notice -9.H

30 VR SERIES VENTABLE RELIEF VALVE PILOT OPERATED VR SLIDING SPOOL TYPE TANK () VENT () PRESSURE () APPLICATION To limit pressure in a system. Good for continuous duty and accurate pressure control with constant or varying flows. The vent feature can be used with remote pilot section for a two-pressure system or to allow manual or remote unloading of the pump. SPECIFICATIONS Figures based on: Oil Temp = 4 C Viscosity = 4 cst Rated Flow litres/min (6 US GPM) Max Setting 5 bar (5 psi) OPERATION When inlet pressure exceeds the setting of the valve, the pilot section opens. The pilot flow causes a pressure imbalance across the main section spool causing it to open, allowing relief flow to tank. When vented, pilot flow is referenced directly to tank, bypassing the pilot section. This flow through the vent causes a pressure imbalance, opening the main section and dumping the pump at minimum pressure drop. FEATURES High accuracy of pilot operated design. Hardened working parts give long, reliable, trouble-free life. Ventible for versatility of application. Cartridge construction for installation into your own manifold. Cartridge Material Body Material Mounting Position Cavity Number Torque Cartridge into Cavity Weight Seal Kit Number Recommended Filtration Level Operating Temp Leakage Nominal Viscosity Range Working parts hardened and ground steel. External surfaces zinc plated Standard aluminium (up to bar*) Add Suffix 77 for steel option Unrestricted A46 (See Section 7) 75 Nm (55 lbs ft) VR VR5.46 kg (. lbs). kg (.5 lbs) SK75 (Nitrile) SK75V (Viton) BS554/4 Class 8/ (5 micron nominal) - C to +9 C 5 8 bar 5 to 5 cst *For applications above bar please consult our technical department or use the steel body option. Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) B

31 4 5 FLOW-US GPM 4 PRESSURE DROP FLOW-US GPM 7 6 VENTED PRESSURE DROP 9 4 PRESSURE-BAR PRESSURE-PSI PRESSURE-BAR PRESSURE-PSI 6 9 FLOW LITRES/MIN FLOW LITRES/MIN 5 CARTRIDGE ONLY COMPLETE VALVE /4 PORTS BASIC CODE: VR HEX SOCKET ADJUST 4. A/F BASIC CODE: VR5 Body ONLY part numbers BSP, aluminium /4 B477 SAE, aluminium /4 B785 BSP, steel /4 B478 SAE, steel /4 B A/F 55. MAX. A/F VENT () -/8 - UNF-A MAX G./4 (/4 SAE) TANK () HOLES Ø 9. THRO' PRESSURE () 8. Where measurements are critical request certified drawings ORDERING CODE EXAMPLE VR*** P 4W 5 S Basic Code VR = Cartridge Only VR5 = Cartridge and Body Adjustment Means P = Leakproof Screw Adjustment G = Tamperproof Cap (See page - for dimensions) Port Sizes - Bodied Valves Only 6W = /4 BSP T = /4 SAE Seals S = Nitrile (For use with most industrial hydraulic oils) SV = Viton (For high temperature and most special fluid applications) Pressure 4 l/min =- bar. Std setting bar 5 =-5 bar. Std setting bar Std setting made at 4 litres/min We reserve the right to change specifications without notice -.D

32 VR SERIES VENTABLE RELIEF VALVE PILOT OPERATED VR SLIDING SPOOL TYPE TANK () VENT () PRESSURE () APPLICATION To limit pressure in a system. Good for continuous duty and accurate pressure control with constant or varying flows. The vent feature can be used with a remote pilot section for a two-pressure system or to allow manual or remote unloading of the pump. SPECIFICATIONS Figures based on: Oil Temp = 4 C Viscosity = 4 cst Rated Flow litres/min (5 US GPM) Max Setting 5 bar (5 psi) OPERATION When inlet pressure exceeds the setting of the valve, the pilot section opens. The pilot flow causes a pressure imbalance across the main section spool causing it to open, allowing relief flow to tank. When vented, pilot flow is referenced directly to tank, bypassing the pilot section. This flow through the vent port causes a pressure imbalance, opening the main section and dumping the pump at minimum pressure drop. FEATURES High accuracy of pilot operated design. Hardened working parts give long, reliable, trouble-free life. Ventible for versatility of application. Cartridge construction for installation into your own manifold. Cartridge Material Body Material Mounting Position Cavity Number Torque Cartridge into Cavity Weight Seal Kit Number Recommended Filtration Level Operating Temp Leakage Nominal Viscosity Range Working parts hardened and ground steel. External surfaces zinc plated Standard aluminium (up to bar*) Add Suffix 77 for steel option Unrestricted A6 (See Section 7) Nm (7 lbs ft) VR.74 kg (.6 lbs) VR5.8 kg (4. lbs) SK7 (Nitrile) SK7V (Viton) BS554/4 Class 8/ (5 micron nominal) - C to +9 C 5 8 bar 5 to 5 cst *For applications above bar please consult our technical department or use the steel body option. Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) D

33 PRESSURE DROP FLOW-US GPM FLOW-US GPM PRESSURE-BAR PRESSURE-PSI PRESSURE-BAR 75 5 VENTED PRESSURE DROP PRESSURE-PSI FLOW LITRES/MIN FLOW LITRES/MIN 5 5 CARTRIDGE ONLY COMPLETE VALVE PORTS BASIC CODE: VR BASIC CODE: VR5 Body ONLY part numbers BSP, aluminium B496 SAE, aluminium B687 BSP, steel B497 SAE, steel B555 HEX SOCKET ADJUST 4. A/F 7. A/F MAX VENT () 8. A/F -5/6 - UN-A 55.5 MAX TANK () HOLES ø 9. THRO'. PRESSURE () Where measurements are critical request certified drawings ORDERING CODE EXAMPLE Basic Code VR = Cartridge Only VR5 = Cartridge and Body Adjustment Means P = Leakproof Screw Adjustment G = Tamperproof Cap (See page - for dimensions) Port Sizes - Bodied Valves Only 8W = BSP 6T = SAE VR*** P 8W 5 S Seals S = Nitrile (For use with most industrial hydraulic oils) SV = Viton (For high temperature and most special fluid applications) Pressure 4 l/min = - bar. Std setting bar 5 = -5 bar. Std setting bar Std setting made at 4 litres/min We reserve the right to change specifications without notice -.D

34 CONTENTS SECTION - DUAL RELIEF VALVES / CROSS LINE RELIEF VALVES This section includes three main types of dual relief valve: ) Differential area/direct acting poppet type including single or dual cartridge versions. ) Direct acting with make up checks. ) Pilot type with vent feature and make up checks. Flows up to 5 litres/min (4 US GPM) and pressures up to 5 bar (5 psi). SELECTION SECTION SERIES APPLICATION RANGE PAGE DDR Direct acting, two-cartridge design Maximum flexibility with separate relief settings and through ports for ease of mounting 4 bar (5 psi) litres/min (8 US GPM) - CLLR Single cartridge, two way relief With single adjustment giving compact solution to dual relief where line settings are the same 5 bar (5 psi) 5 litres/min (4 US GPM) -5 to - Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) D

35 TYPICAL CIRCUIT EXAMPLES CLLR DUAL RELIEF SINGLE CARTRIDGE PRESSURE EQUIPMENT DIRECTIVE All pressure control valves manufactured by Integrated Hydraulics are designed to be Pressure Accessories in accordance with article section of the Pressure Equipment Directive and Sound Engineering Practice and sold in good faith as such. For Safety Accessories as defined in article section.4 of the Pressure Equipment Directive please contact the UK Technical Sales Department. ADJUSTMENTS The adjustment range and Max setting figures shown throughout this catalogue give the design range for each valve, higher or lower values may be attainable but should not be used without first contacting our Engineering department. Setting must ALWAYS be carried out using an appropriate gauge and it must NOT be assumed that screwing an adjuster to its maximum or minimum position will yield the maximum or minimum stated design setting for that valve. ø6.5 ø7. 8. P - LEAKPROOF SCREW R - HANDKNOB G - TAMPERPROOF CAP F - SCREW Tightening torque of F adjuster locknut - to 5 Nm Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) D

36 CLLR SERIES DUAL RELIEF VALVE DIRECT ACTING DIFFERENTIAL AREA CLLR5 POPPET TYPE P (P) (P) P APPLICATION To protect both lines in a circuit from over pressurisation by relieving oil to the other line. Ideal for use with motors or directional valves as a safety relief. Differential area, fast acting, poppet valve. OPERATION Pressure acts over one of two differential areas forcing the poppet back allowing relief flow to the other port. This being a single cartridge is ideal for mounting on to the motor in a special housing. PRESSURE DROP FEATURES Single cartridge relieving in both directions cutting down space requirements, giving full adjustment through its range on both pressures at the same time. SPECIFICATIONS Figures based on: Oil Temp = 4 C Viscosity = 4 cst Rated Flow Max Setting Cartridge Material Body Material 5 litres/min ( US GPM) 5 bar (5 psi) Working parts hardened and ground steel. External steel surfaces zinc plate. Standard aluminium (up to bar*) Add Suffix 77 for steel option FLOW-US GPM Mounting Position Unrestricted Cavity Number Torque Cartridge into Cavity A7 (See Section 7) Nm ( lbs ft) PRESSURE-BAR PRESSURE-PSI Weight Seal Kit Number Recommended Filtration Level CLLR5 CLLR55. kg (.5 lbs).8 kg (.8 lbs) SK8 (Nitrile) SK8V (Viton) BS554/4 Class 8/ (5 micron nominal) 5 Operating Temp Leakage - C to +9 C 5 millilitres/min 4 5 Nominal Viscosity Range 5 to 5 cst FLOW LITRES/MIN *For applications above bar please consult our technical department or use the steel body option. Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) A

37 CARTRIDGE ONLY BASIC CODE: CLLR5 SCREW IN TO INCREASE PRESSURE SETTING SCREW OUT TO DECREASE PRESSURE SETTING 5. A/F HEX. A/F HEX 5. A/F HEX /8-4 UNF-B. (P) (P) Tightening torque of F adjuster locknut - to 5 Nm COMPLETE VALVE BASIC CODE: CLLR55 Body ONLY part numbers BSP, aluminium SAE, aluminium /8 B95 / B956 / B94 /8 / PORTS SAE, steel / B Where measurements are critical request certified drawings ORDERING CODE EXAMPLE CLLR*** F W 5 S Basic Code CLLR5 = Cartridge Only CLLR55 = Cartridge and Body Adjustment Means F = Screw Adjustment Port Sizes - Bodied Valves Only W = /8 BSP 4W = / BSP 8T = / SAE Seals S = Nitrile (For use with most industrial hydraulic oils) SV = Viton (For high temperature and most special fluid applications) Pressure 4.5 l/min 7 = 5-75 bar. Std setting 5 bar 5 = 4-5 bar. Std setting 8 bar Std setting made at 4.5 litres/min We reserve the right to change specifications without notice -6.C

38 CLLR SERIES DUAL RELIEF VALVE DIRECT ACTING DIFFERENTIAL AREA CLLR POPPET TYPE P PRESSURE/TANK () PRESSURE/TANK () P APPLICATION To protect both lines in a circuit from over pressurisation by relieving oil to the other line. Ideal for use with motors or directional valves as a safety relief. Differential area, fast acting, poppet valve. OPERATION Pressure acts over one of two differential areas forcing the poppet back allowing relief flow to the other port. This being a single cartridge is ideal for mounting on to the motor in a special housing. PRESSURE DROP FEATURES Single cartridge relieving in both directions cutting down space requirements, giving full adjustment through its range on both pressures at the same time. SPECIFICATIONS Figures based on: Oil Temp = 4 C Viscosity = 4 cst Rated Flow Max Setting Cartridge Material Body Material 5 litres/min (4 US GPM) 5 bar (5 psi) Working parts hardened and ground steel. External steel surfaces black oxide Standard aluminium (up to bar*) Add Suffix 77 for steel option Mounting Position Unrestricted FLOW-US GPM Cavity Number A878 (See Section 7) Torque Cartridge into Cavity 6 Nm (44 lbs ft) Weight CLLR CLLR5 CLLR55. kg (.5 lbs).8 kg (.8 lbs). kg (.4 lbs) PRESSURE-BAR FLOW LITRES/MIN 9 5 PRESSURE-PSI Seal Kit Number Recommended Filtration Level Operating Temp Leakage Nominal Viscosity Range SK64 (Nitrile) SK64V (Viton) BS554/4 Class 8/ (5 micron nominal) - C to +9 C 5 millilitres/min 5 to 5 cst *For applications above bar please consult our technical department or use the steel body option. Collins Road, Heathcote Ind. Est., Warwick, CV4 6TF, UK. 747 Spinach Drive, Mentor, Ohio 446, USA Tel: +44 () Fax: +44 () Tel: (44) Fax: (44) D