SystemStak. SystemStak Valves. Vickers

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1 Vickers SystemStak SystemStak Valves ISO size, 315 bar (40 psi) and 120 l/min (32 USgpm) maximum ratings ressure relief and reducing, sequence, counterbalance, and flow control functions Revised 11/97 649

2 able of Contents Introduction DMC-5 Single Relief DMC2-5 Dual and Crossport ilot Operated Relief Valves DM2 ressure Reducing/Relieving Valves DMR1 Sequence Valve DMR Counterbalance Valves DMFN Flow Control Valves DMC ilot Operated Check Valves DMDC Direct Check Valves Knob djusters Mounting Surface DM**-5 DM**-5N DM**-5 olt Extender Kits Subplates and lanking late pplication Data Fluid Cleanliness, Fluid Viscosity, Fluids and Seals Vickers, Incorporated 1997 ll Rights Reserved

3 Introduction eneral Description Vickers SystemStak M valves make compact hydraulic systems in which modular valves are sandwich mounted between a directional valve and a standard mounting surface. Compact design improves system response by elimination of external fluid conductors, thereby resulting in elimination of resonant sounds which are noisy and lead to leakage. he design of these valves is well proven and offers opportunities for achieving small control assemblies, especially when the valves are used with multi-station manifolds. hree mounting surfaces are available for interfacing with directional valves and are coded 5, 5N, or 5 in the model numbers of Vickers SystemStak valves. he 5 interface accepts Vickers D4S4 directional valves and other directional valves with a standard ISO , NF-D05, NSI/93.7M size D05 or CEO-5 port pattern. 5N and 5 NF-D05 interfaces accept the Vickers directional valves listed on page 38. Each valve stak can be configured to provide the specific combination of functions required to meet the system s needs. SystemStak valves are divided into two groups: 1. Valves acting in the pressure and/or tank lines ( and/or ) DMC Relief valve DMDC Direct check DMFN Flow control DMR1 Sequence valve DM2 ressure reducing he general rule for this group is that the DMC relief valve be placed nearest the subplate or manifold. he DMDC direct check valve should be placed nearest the directional control valve. he DMR1 sequence valve should be the farthest valve from the directional valve. he DMR1 must be mounted directly to a subplate or manifold with a drain port, to externally drain the DMR1 at the mounting face. 2. Valves acting in the service lines ( and/or ) DMC Relief valve DMC2 Dual relief valve DMDC Direct check DMC ilot operated check DMFN Flow control DMR Counterbalance he general rule for this group is that the DMC system relief valve be the farthest valve from the directional valve. When using a DMC with a DMFN (meter-out), the DMC should be nearest the directional valve. Features and enefits Reduced space requirements Stackable SystemStak valves, used with ISO , CEO 5 (NF-D05) directional controls, provide compact cost-effective control of actuator direction, speed and force. Reduced installed cost SystemStak valves eliminate all intervalve piping and connections, thereby reducing the number of potential leakage points. Installed cost is less than when using conventional subplate- or line-mounted valves. Versatile & easy to install SystemStak valves have all the internal passages necessary to serve the directional valve mounted above them. ny directional valve with a standard ISO , NF-D05, NSI/93.7M size D05 or CEO-5 port pattern can be used with ISO SystemStak valves. Vickers bolt-extender kits simplify valve installation by permitting each valve body to be separately and quickly installed, and correctly torqued down. he kits also allow the directional valve to be removed for service or replacement without disturbing the stack. Rugged & reliable Internal working parts are produced from hardened steel, and reside in a continuous-cast ductile (spheroidal graphite) iron body. Excellent reliability is ensured, even in high pressure applications. Working parts are serviceable without removing valves from the stack. 1

4 Easy to Understand, Easy to Design SystemStak circuitry is best shown using slightly different symbols than those for traditional valve configurations. Each SystemStak symbol has the same basic form and size as shown in Figure 1. Figure 1. combination of directional valve, SystemStak valve(s) and subplate/ manifold block (Figure 5 single station subplate and Figure 6 multi station manifold) completes the assembly. Figure 7 represents a complete SystemStak system, showing typical use of functions available from this range. he circuit diagram also shows the use of a tapping plate for accessing line pressure readings, and a blanking plate to close off an unused station of a multi-station manifold. DMC DMFN DMC Figure 4. Figure 2. For ease of understanding, remember the directions of flow for each line, and that all four flow paths pass through each valve (see Figure 2). For clarity, directional valves are drawn vertically in SystemStak circuit diagrams (see Figure 3.) Figure 5. Figure 6. Figure 3. Each station (valve stack) is a combination of functions. When designing and assembling SystemStak valves, care must be taken to ensure that they interact as required by stacking the functions in the correct sequence (see Figure 4). Direct check valves should be placed closest to the directional valve. Relief valves should normally be positioned next to the mounting surface (i.e. at the bottom of the stack). When both a flow control and a pilot operated check valve is required, it is recommended that the flow control valve be between the check valve and the actuator to prevent check valve chatter. DMC DMC Figure 7. DM DMC DMFN DM lanking plate 2

5 DMC/DMC2 ilot Operated Relief Valves eneral Description hese two-stage valves limit system pressure by directing flow to tank or the opposite cylinder port (-/- crossport types) when system pressure reaches the valve setting. ressure control may be obtained in,, and, or port, and pilot flow may be internally or externally drained, depending on model type. Model Code ny pressure in the line to which these valves are drained is additive to the valve pressure setting. he valve pressure setting is adjustable by means of either an adjusting screw and locknut, a hand-knob adjuster, or a micrometer knob with keylock. External remote control/vent connections are available on all models except crossport relief. If required on crossport models, contact your Vickers representative Valve function Manifold or subplate mounted pressure relief valve. Valve type 2 - Dual relief cavities lank - Single relief 3 Interface 5 - ISO 4401-C-05-4-, CEO R35H NSI/NF D05 5N - NF D05 (lt. ) 5 - NF D05 (lt. ) 4 ort operated upon - cylinder port (single, dual or crossport types) - cylinder port (single type only) -ressure port (single type only) 5 ort drained into - cylinder port - cylinder port (crossport type only) - ank port (single or dual types) F - - ressure range 4 to bar (60 to 725 psi) 4 to 100 bar (60 to 14 psi) 4 to 200 bar (60 to 2900 psi) 4 to 315 bar (60 to 40 psi) 7 djustment device H - Knob adjuster K - Micrometer knob with keylock W - Screw with locknut 8 External drain E - External drain Omit for internal drain models. 9 port acted upon - cylinder port (dual or crossport type) Omit for single type. 10 ort drained into - cylinder port (crossport type only) - ank port (dual type only) 11 ressure range Omit for single type. - 4 to bar (60 to 725 psi) - 4 to 100 bar (60 to 14 psi) F - 4 to 200 bar (60 to 2900 psi) - 4 to 315 bar (60 to 40 psi) djustment device Omit for single relief models. H - Knob adjuster K - Micrometer knob with keylock W - Screw with locknut External drain E - External drain same as position Omit for single relief models. 14 Remote control port - Remote control port Not available on crossport models. 15 age port & thread type age port for - models only; optional remote control () and external drain (E) ports as applicable. Omit for crossport models - 1 / 8 ( 1 / 8 SF) S -SE-4 O-ring boss port ( UNF-2 thread) 16 Design number - 30 series Subject to change. Installation dimensions unaltered for design numbers 30 to 39 inclusive. 8 3

6 Functional Symbols DMC2-5--**--**-*-30 DMC-5--**-*-30 DMC-5--**-E-*-30 DMC2-5--**--**-*-30 DMC-5--**--*-30 DMC-5--**-E--*-30 DMC2-5--**-E--**-E-*-30 DMC-5--**-E-*-30 DMC-5--**-*-30 DMC2-5--**-E--**-E--*-30 DMC-5--**-E--*-30 DMC-5--**--*-30 DMC2-5--**--**-30 DMC-5--**-*-30 DMC-5--**-E-*-30 DMC2-5--**-E--**-E-*-30 DMC-5--**--*-30 DMC-5--**-E--*-30 4

7 DMC2-5N--**--**-*-30 DMC-5N--**-*-30 DMC-5N--**-E--*-30 DMC2-5N--**--**-*-30 DMC-5N--**--*-30 DMC-5N--**-E-*-30 DMC2-5N--**-E--**-E-*-30 DMC-5N--**-E-*-30 DMC-5N--**-*-30 DMC2-5N--**-E--**-E--*-30 DMC-5N--**-E--*-30 DMC-5N--**--*-30 DMC2-5N--**--**-30 DMC-5N--**-*-30 DMC-5N--**-E-*-30 DMC-5N--**--*-30 DMC-5N--**-E--*-30 5

8 DMC2-5--**--**-*-30 DMC-5--**-*-30 DMC-5--**-E--*-30 DMC2-5--**--**--*-30 DMC-5--**--*-30 DMC-5--**-E-*-30 DMC2-5--**-E--**-E-*-30 DMC-5--**-E-*-30 DMC-5--**-*-30 DMC2-5--**-E--**-E--*-30 DMC-5--**-E--*-30 DMC-5--**--*-30 DMC2-5--**--**-30 DMC-5--**-*-30 DMC-5--**-E-*-30 DMC-5--**--*-30 DMC-5--**-E--*-30 6

9 Operating Data asic Characteristics Maximum flow: l/min (32 USgpm) ilot C (120 F) and 315 bar (40 psi) ml/min (24 in 3 /min-43 in 3 /min) Maximum operating pressure: bar (40 psi) Response time: For conditions of 5 liters (300 in 3 ) of oil under compression and a flow rate of 120 l/min (32 USgpm) typical response is:. Initial pressure Final pressure Response time 17 bar (2 psi) 35 bar (0 psi) 35 bar (0 psi) ressure overshoot: bar (4 psi) Operating temperature: to 80 C (32 to 180 F) Weights: DMC 2,9 kg (6.5 lbs) DMC2 3,6 kg (7.9 lbs) 35 bar (0 psi) 140 bar (2000 psi) 315 bar (40 psi) 95 ms 110 ms 1 ms DMC-5 and DMC2-5 Insertion Loss Flow USgpm ressure Drop bar ressure Drop psi Insertion Loss otal change in pressure drop from through ports, and caused by the addition of the SystemStak valve to a hydraulic circuit. Insertion loss curves (see top left): 1. DMC2-5--**-(E)--**-(E)-()*-30 DMC-5--**-(E)-()*-30 DMC-5--**-(E)()-* DMC-5--**-(E)-()* DMC2-5--**--**-30 ressure bar Flow l/min DMC-5 and DMC2-5 Vented ressure ( models only) (Not applicable for crossport models) 5 Flow USgpm Flow l/min he vented pressure chart (above) indicates flow from control port to discharge port over relief element. ressure psi ressure bar DMC-5 and DMC2-5 ressure Override he pressure override chart (below) shows typical override of different adjustment ranges at maximum settings Flow USgpm Override at minimum ( ) setting all models Flow l/min F ressure psi 7

10 Installation Dimensions DMC-5- Single Relief mm (inches) 3rd angle projection See page 37 for optional adjustment devices. See page 38 for interface dimensions. 4 mounting holes 6,90 (0.27) through 9, (0.37) counterbore 36,5 (1.44) deep for bolt extenders (order separately) KE-6M-M (M6 metric) or KE-4-M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) 48 (1.89) W models (max. ext.) Remote control port. ( models only) External connection port thread type (see table) 11,8 (0.46) (1.97) 25 (.98) 38 (1.5) 14 (0.55) 13,5 (0.53) ISO 4401-C (NF D05) Mounting surface 11,5 (0.45) 13 (1/2 ) Wrench size 4 (5/32 ) Hex key External drain port. lugged for internal drain. External connection port thread type (see table) 144,1 (5.67) max. (1.97) 11,7 (0.46) 23 (0.91) 33,2 (1.31) 69,5 (2.74) 71,6 (2.82) max. age port. External connection port thread type: (see table) External drain port. External 1,8 connection port thread (see table) (0.46) djust clockwise to increase pressure setting. Note: ack pressure in drain is added to this setting for internal drain models only. External connection port threads S models - SE-4 O-ring boss port ( UNF-2 thread). models - 1 / 8 ( 1 / 8 SF) 8

11 DMC-5- Single Relief mm (inches) 4 (5/32 ) Hex key W models (max. ext.) 30 (1.18) 48 (1.89) 4 mounting holes (See page 8 for specifications) 11,5 (0.45) 11,5 (0.45) (1.97) 15,3 (0.60) External drain port * lugged for internal drain. 12,5 (0.49) Remote control port. * ( models only) 11,7 (0.46) 13 (1/2 ) Wrench size ISO 4401-C (NF D05) Mounting surface 141 (5.55) 37 (1.46) 13,5 (0.53) * External connection port thread type: S models - SE-4 O-ring boss port ( UNF-2 thread). models - 1 / 8 ( 1 / 8 SF) 71,6 (2.82) max. 69,5 (2.74) 33,2 (1.31) See page 37 for optional adjustment devices. See page 38 for interface dimensions. DMC-5- Single Relief 4 mounting holes (See page 8 for specifications) djust pressure port. djust clockwise to increase pressure setting. 48 (1.89) W models (max. ext.) ack pressure in drain is added to this setting for internal drain models only. 4 (5/32 ) Hex key (1.97) 11,5 (0.45) 30 (1.18) 11,5 (0.45) 13,5 (0.53) 13 (1/2 ) ISO 4401-C (NF D05) Mounting surface Wrench size djust pressure port. djust clockwise to increase pressure setting. 12,5 (0.49) External drain port * Remote control port * ( models only) 141 (5.55) (1.97) 11,7 (0.46) 15,3 (0.60) 33,2 (1.31) 69,5 (2.74) 71,6 (2.82) max. External drain port *. lugged for internal drain. 9

12 DMC2-5--**--**-30 Dual Relief mm (inches) See page 37 for optional adjustment devices. See page 38 for interface dimensions. W models (max. ext.) typ. both ends 30 both (1.18) ends 48 (1.89) 4 mounting holes 6,9 (0.27) through 9, (0.37) counterbore 36,5 (1.44) deep for bolt extenders (order separately) KE-6M-M (M6 metric) or KE-4-M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) 4 (5/32 ) Hex key (1.97) 11,5 both (0.45) ends 13,5 (0.53) ISO 4401-C (NF D05) Mounting surface 13 (1/2 ) Wrench size both ends * Remote control port. oth ends ( models only) 11,7 (0.46) (1.97) 153,9 (6.06) * Remote control port. oth ends ( models only) 12,5 (0.49) both ends 71,6 (2.82) max. 33,2 (1.31) 33,2 (1.31) 69,5 (2.74) 15,3 both (0.60) ends djust pressure port. djust clockwise to increase pressure setting. External drain port * (both ends). lugged for internal drain. djust pressure port. djust clockwise to increase pressure setting. * External connection port thread type: S models - SE-4 O-ring boss port ( UNF-2 thread). models - 1 / 8 ( 1 / 8 SF) 15 in model code ack pressure in drain is added to this setting for internal drain models only. 10

13 DMC2-5--**--**-30 Dual Crossport Relief mm (inches) See page 37 for optional adjustment devices. See page 38 for interface dimensions. W models (max. ext.) typ. both ends 45,6 (1.71) 4 mounting holes 6,90 (0.27) through. 9, (0.37) counterbore 46,5 (1.83) deep for bolt extenders (order separately) KE-6M-60M (M6 metric) or KE-4-60M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) 4 (5/32 ) Hex key 46 (1.81) 20 (0.79) 40 (1.57) 60 (2.36) ISO 4401-C (NF D05) Mounting surface 14,0 (0.55) 13 (1/2 ) Wrench size both ends 11,7 (0.46) 37 (1.46) 128 (5.04) 71,6 (2.82) max. 31,3 (1.23) 69,5 (2.74) External drain (See table) djust pressure port. djust clockwise to increase pressure setting. External drain (See table) djust pressure port. djust clockwise to increase pressure setting. External drain port threads S models - SE-4 O-ring boss port ( UNF-2 thread). models - 1 / 8 ( 1 / 8 SF) 11

14 DMC-5--**-(E)-*-30 Single Crossport Relief mm (inches) See page 37 for optional adjustment devices. See page 38 for interface dimensions. W models (max. ext.) 45,6 (1.71) 4 mounting holes 6,90 (0.27) through. 9, (0.37) counterbore 46,5 (1.83) deep for bolt extenders (order separately) KE-6M-60M (M6 metric) or KE-4-60M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) 128 (5.04) 10,2 (0.40) 40 (1.57) 60 (2.36) 20 (0.79) ISO 4401-C (NF D05) Mounting surface DMC-5--**-(E)-*-30 Single Crossport Relief mm (inches) 4 mounting holes (See above for specifications) 10,2 (0.40) 128 (5.04) 45,6 (1.71) W models (max. ext.) 40 (1.57) 60 (2.36) 40 (1.57) Click here for optional adjustment devices. Click here for interface dimensions. ISO 4401-C (NF D05) Mounting surface 12

15 DM2 ressure Reducing/Relieving Valves eneral Description hese two-stage spool valves maintain a reduced outlet pressure against variations in inlet pressure. hese valves are able to act as relief valves (at % of maximum flow) to prevent excess pressure being developed when an actuator is subject to a reactive load. Relief flow is directed to the port. herefore, for the relief function to operate, all components above this DM2 module must contain the port, and the directional valve must have the bypass feature. ilot control may be from the,, or port. ilot drain flow may be directed internally to tank port, or externally out of the valve body. ny pressure in the line to which these valves are drained is additive to the valve pressure setting. he valve pressure setting is adjustable by means of either an adjusting screw containing an internal hex, a hand-adjust knob, or a micrometer knob with keylock. Different spring ratings cover an overall pressure range from 2 to 315 bar (30-40 psi). he metering spool element in this design is always positioned in the line (see symbols on page14). he connection of the pilot control line determines at which port the reduced pressure is obtained. For example: pilot for reduced pressure in port pilot for reduced pressure in port pilot for reduced pressure in port he and line models provide for reduced pressure when is connected to or. It allows free flow through the service port when connected to (all via a four-way directional valve). Model Code Valve function Manifold or subplate mounted reducing/relieving valve. 2 Interface 5 - ISO 4401-C-05-4-, CEO 5 R35 size 5 NSI/NF D05 5N - NF D05 (lt. ) 5 - NF D05 (lt. ) 3 ort operated upon -ressure port 4 ilot control - Cylinder port - Cylinder port - ressure port F H - K - W - 7 ressure range 2,0 to bar (30 to 725 psi) 8,5 to 100 bar (125 to 14 psi) 8,5 to 200 bar (125 to 2900 psi) 8,5 to 315 bar (125 to 40 psi) djustment device Knob adjuster Micrometer knob with keylock Screw with locknut External drain E - External drain Omit for internal drain models. 8 Remote control Omit if not required. 9 age port & thread type age port (all models), external drain (E) - 1 / 8 ( 1 / 8 SF) S -SE-4 O-ring boss port ( UNF-2 thread) 10 Design mumber - 30 series Subject to change. Installation dimensions unaltered for design numbers 30 to 39 inclusive. 13

16 Functional Symbols DM2-5--**-*-30 DM2-5--**-*-30 DM2-5--**-*-30 DM2-5--**-E-*-30 DM2-5--**-E-30 DM2-5--**-E-30 DM2-5--**--*-30 DM2-5--**--*-30 DM2-5--**--*-30 DM2-5--**-E--*-30 DM2-5--**-E--30 DM2-5--**-E--30 DM2-5N--**-*-30 DM2-5N--**-E-*-30 DM2-5N--**-*-30 DM2-5N--**-E-*-30 DM2-5N--**-30 DM2-5N--**-E-30 DM2-5--**-*-30 DM2-5--**-E-*-30 DM2-5--**-*-30 DM2-5--**-E-*-30 DM2-5--**-30 DM2-5--**-E-30 14

17 Operating Data asic Characteristics Maximum flow: l/min (32 USgpm) ilot flow C (120 F) and 315 bar (40 psi): ml/min (18-26 in 3 /min) Leakage flow C (120 F) and 315 bar (40 psi): ml/min (15-12 in 3 /min) (Leakage to b around spool bar (40 psi) reduced pressure) Maximum operating pressure: models - 70 bar (1000 psi) * (inlet pressure) bar (725 psi) (reduced pressure), F & models bar (40 psi) Weight: ,5 kg (7.7 lbs) * Slightly higher pressure override characteristics between 70 bar (1000 psi) and 315 bar (40 psi) inlet. DM2 Insertion Lossess hese curves show the typical pressure drop for each flow path in the valve. he port pressure drop is the pressure drop for flow across the reducing valve spool in the fully open condition. he total insertion loss for the valve must be calculated by summing the losses through each of the four flow paths. DM2 ressure Override hese curves show the typical roll off or underride of the different pressure ranges at maximum settings. lso shown is the typical override of the relieving feature which prevents undesirable pressure rise in the reduced pressure port. ressure Drop bar Flow USgpm port port or port Flow l/min DM2 Minimum Reduced ressure ressure bar ressure Drop psi Flow USgpm , F & models ressure psi ressure bar Flow USgpm max max min., F, min Relieving mode max. F max. Flow l/min Reducing mode he curves (left) show the minimum reduced pressure settings allowable for a given flow rate. he minimum pressure setting applies regardless of inlet pressure. Operation of the valve below minimum settings may cause erratic valve operation due to insufficient spring force to counter flow forces acting on the spool. ressure psi 0 models Flow l/min 15

18 Installation Dimensions DM2-5-// Reducing/Relieving Valves mm (inches) See page 37 for optional adjustment devices. See page 38 for interface dimensions. 3rd angle projection age port (See table) 4 mounting holes 6,90 (0.27) through 9, (0.37) counterbore 46,5 (1.83) deep for bolt extenders (order separately) KE-6M-60M (M6 metric) or KE-4-60M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) W models (max. ext.) 48 (1.89) 4 (5/32 ) Hex key Remote control port. ( models only) 21,8 (0.86) (1.97) 30 (1.18) 60 (2.36) 48 (1.89) 11,5 (0.45) 13,5 (0.53) ISO 4401-C (NF D05) Mounting surface 13 (1/2 ) Wrench size External drain port. lugged for internal drain.(see table) 20,4 (0.80) 131 (5.16) 128 (5.04) 37 (1.46) 11,7 (0.46) age port (See table) 41,6 (1.64) 71,6 (2.82) 28,4 max. (1.12) 69,5 (2.74) External connection port threads S models - SE-4 O-ring boss port ( UNF-2 thread). models - 1 / 8 ( 1 / 8 SF) djust clockwise to increase pressure setting. Note: ack pressure in drain is added to this setting for internal drain models only. 16

19 DMR1 Internal ilot Operated Sequence Valves eneral Description hese two-stage pressure operated valves are normally closed to flow through the main spool flow path. When system pressure reaches or exceeds the valve setting, the main spool flow path opens. ilot flow may be externally or internally drained to tank. Model Code ny pressure in the line to which these valves are drained is additive to the valve pressure setting. he valve pressure setting is adjustable by means of either an adjustable screw containing an internal hex, a hand-adjust knob, or a micrometer knob with keylock. Different spring ratings cover an overall pressure range from 5 to 315 bar (75-40 psi) Valve function Manifold or subplate mounted sequence valve. Interface 5 - ISO 4401-C-05-4-, CEO R35H Size 5 NSI/NF D05 5N - NF-D05 (lt ) 5 - NF-D05 (lt ) 3 ort operated upon - ressure port 4 ilot control - ressure port 5 ressure range - 5 to bar (75 to 725 psi) - 5 to 100 bar (75 to 14 psi) F - 5 to 200 bar (75 to 2900 psi) - 5 to 315 bar (75 to 40 psi) 6 djustment device H - Knob adjuster K - Micrometer knob with keylock W - Screw with locknut 7 External drain E - External drain Omit for internal drain models. 8 age port & thread type age port (all models), external drain (E) (optional). - 1 / 8 ( 1 / 8 SF) S -SE-4 O-ring boss port ( UNF-2 thread) 9 Design number - 30 series Subject to change. Installation dimensions unaltered for design numbers 30 to 39 inclusive. Functional Symbols DMR1-5--**-*-30 DMR1-5N--**-*-30 DMR1-5--**-*-30 DMR1-5--**-E-*-30 DMR1-5N--**-E-*-30 DMR1-5--**-E-*-30 17

20 Operating Data asic Characteristics Maximum flow: l/min (32 USgpm) ilot C (120 F) and 315 bar (40 psi): ml/min (24-31 in 3 /min) Leakage flow C (120 F) and 315 bar (40 psi): ml/min (5-12 in 3 /min) Maximum operating pressure: bar (40 psi) Operating temperature: to 80 C (32 to 180 F) Weight: ,5 kg (7.7 lbs.) Insertion Losses hese curves show the typical pressure drop for each flow path in the valve. he port pressure drop is the pressure drop for flow across the sequence valve spool in the fully open position. ressure Override ypical pressure override of the different pressure ranges at minimum and maximum settings. he total insertion loss for the valve must be calculated by summing the losses through each of the four flow paths. 25 Flow USgpm Flow USgpm ressure Drop bar port* ressure Drop psid ressure bar max. F max. max ressure psi or port port Flow l/min *Spool held in open position 100 max Minimum setting (all models) Flow l/min 18

21 Installation Dimensions DMR1-5--**-30 Sequence Valve mm (inches) See page 37 for optional adjustment devices. See page 38 for interface dimensions. 4 mounting holes 6,9 (0.27) through 9, (0.37) counterbore 46,5 (1.83) deep for bolt extenders (order separately) KE-6M-60M (M6 metric) or KE-4-60M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) 48 (1.89) 3rd angle projection W models (max. ext.) 60 (2.36) 30,5 (1.20) Hex key 4 (5/32 ) 10 (0.39) 13,5 (0.53) 11,5 (0.45) * age port. External connection port thread ISO 4401-C (NF D05) Mounting surface 13 (1/2 ) Wrench size 128 (5.04) 130 (5.12) 37 (1.46) 11,7 (0.46) * age port. External connection port thread 20,4 (0.80) 28,4 (1.12) 69,5 (2.74) 71,6 (2.82) max. *External drain and gage port threads S models - SE-4 O-ring boss port ( UNF-2 thread). models - 1 / 8 ( 1 / 8 SF) *External drain port. lugged for internal drain djust clockwise to increase pressure setting. Note: ack pressure in drain is added to this setting for internal drain models only. 19

22 DMR Counterbalance Valves eneral Description Vickers SystemStak counterbalance valves provide continuous protection from pump cavitation and prevent an actuator from running ahead of the pump supply. hese valves also provide thermal relief protection in closed systems. NOE Counterbalance valves adjust in the opposite direction of other pressure control valves. urning the adjuster counterclockwise increases the valve setting. urning the adjustment clockwise lowers the pressure setting, releasing the load. Functional Symbols Drain ny pressure in the line to which these valves are drained is additive to the valve pressure setting. ilot pressure Calculation o open the counterbalance valve by remote control (referring to functional symbols below): For 4:1 ratio (typically for cylinder load control), nominal pilot pressure at ort = Cracking pressure + (5 x ort 1 pressure) ort pressure 4 For 10:1 ratio (typically for hydraulic motor control), nominal pilot pressure at ort = Cracking pressure + (11x ort 1 pressure) ort pressure 10 DMR-5-*-FW-*-FW-30 DMR-5-*-FW-30 DMR-5-*-FW Model Code Valve function Manifold or subplate mounted counterbalance valve. 5 ressure range F - 60 to 210 bar (900 to 3000 psi) 9 ressure range (Omit for single type.) F - 60 to 210 bar (900 to 3000 psi) 2 Interface 5 - ISO 4401-C-05-4-, CEO 5 R35H, Size 5 NSI/NF D05 3 ort operated upon -Counterbalance in, piloted from -Counterbalance in, piloted from 4 ilot ratio 8 1-4:1 2-10:1 6 H - C - W - 7 djustment device Knob adjuster Cap over screw Screw with locknut ort acted upon (Omit for single type.) -Counterbalance in, piloted from ilot ratio (Omit for single type.) 1-4:1 2-10:1 10 H - C - W - 11 djustment device (Omit for single type.) Knob adjuster Cap over screw Screw with locknut Design number - 30 series Subject to change. Installation dimensions unaltered for design numbers 30 to 39 inclusive. 20

23 Operating Data asic Characteristics Maximum operating pressure: bar (40 psi) Maximum flow rate: l/min (32 USgpm) Load holding of pressure setting ml/min. Cracking ressure djustment Range: bar ( psi) ilot Ratios: :1, 10:1 Leakage: drops/min, ort to ort 1 at 70% of crack setting. emperature Range: to 80 C (-40 to 180 F) Weight: ,5 kg (10 lbs) DMR erformance Curves Insertion Losses hese curves show the typical pressure drop for each flow path in the valve for fluid viscosity range cst (100-1 SSU). he total insertion loss for the valve is calculated by summing the losses through each of the four flow paths. 1 port for all models. port of DMR-5-*-30 port of DMR-5-*-30 2 port for all models. 3 Free flow through service port of counterbalance. 4 iloted port open through service port of counterbalance. 4 Flow USgpm Flow USgpm ressure Drop bar ressure Drop psid ressure Drop bar ressure Drop psid Flow l/min Flow l/min 21

24 Installation Dimensions DMR-5-*-FW-*-FW-30 Dual Counterbalance on & orts mm (inches) 3rd angle projection See page 37 for optional adjustment devices. See page 38 for interface dimensions. 65,6 (2.58) W models (max. ext.) both ends 4 mounting holes 6,90 (0.27) through 9, (0.37) counterbore 46,5 (1.83) deep for bolt extenders (order separately) KE-6M-60M (M6 metric) or KE-4-60M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) Hex key 4 (5/32 ) 60 (2.36) 21,5 (0.85) ISO 4401-C (NF D05) Mounting surface 13,5 (0.53) 13 (1/2 ) Wrench size 11,7 (0.46) 155,5 (6.12) (1.97) 33,2 (1.31) 71,6 (2.82) 69,5 (2.74) djust counterclockwise to increase pressure setting. 22

25 DMR-5-*-FW-30 Counterbalance ort, iloted from mm (inches) ISO 4401-C (NF D05) Mounting surface 4 mounting holes (see page 22) 60 (2.36) 65,6 (2.58) W models (max. ext.) 4 (5/32 ) Hex key 21,5 (0.85) 11,7 (0.46) 142,6 (5.61) (1.97) 33,2 (1.31) 69,5 (2.74) 71,6 (2.82) 13 (1/2 ) Wrench size djust counterclockwise to increase pressure setting. See page 37 for optional adjustment devices. See page 38 for interface dimensions. DMR-5-*-FW-30 Counterbalance ort, iloted from 4 (5/32 ) Hex key 65,6 (2.58) W models (max. ext.) 4 mounting holes (see page 23) 60 (2.36) 21,5 (0.85) 13 (1/2 ) Wrench size ISO 4401-C (NF D05) Mounting surface 142,6 (5.61) 37 (1.46) 11,7 (0.46) djust counterclockwise to increase pressure setting. 71,6 (2.82) 69,5 (2.74) 33,2 (1.31) 23

26 DMFN Flow Control Valves eneral Description hese valves are adjustable, non-compensated flow restrictors. n integral check valve around the regulating orifice allows free flow in one direction and metered flow in the other. Control is available in only, only, and and ports as an type (meter in) or type (meter-out). he port is available only in the type (meter-in) and does not contain a reverse flow check. he valve flow setting is adjustable by means of either a hex key adjusting screw and locknut, a hand-adjust knob, or a micrometer knob with keylock. normal or fine metering capability is available. See the pressure drop curves on page 26 for detailed performance difference. Model Code Valve function Manifold or subplate mounted flow control valve. Interface 5 - ISO 4401-C-05-4-, CEO 5 Size 5 R35H NSI/NF D05 5N - NF D05 (lt. ) 5 - NF D05 (lt. ) 3 Direction of flow - Meter-in - Meter-out 4 ort operated upon - Cylinder port (single or dual type) - Cylinder port (single type only) - ressure port (single type only) 5 djustment range 1 - Fine control 2 - Normal control 6 H - K - W - 7 djustment device Knob adjuster Micrometer knob with keylock Screw with locknut ort operated upon: second function (Omit for single flow control models.) cylinder port (Dual type) 8 djustment range: second function (Omit for single flow control models.) 1 - Fine control 2 - Normal control 9 djustment device: second function (Omit for single flow control models.) H - Knob adjuster K - Micrometer knob with keylock W - Screw with locknu 10 Design number - 30 series Subject to change. Installation dimensions unaltered for design numbers 30 to 39 inclusive. 24

27 25 Functional Symbols DMFN-5--**-30 DMFN-5--**-**-30 DMFN-5--**-30 DMFN-5--**-30 DMFN-5--**-**-30 DMFN-5--**-30 DMFN-5--**-30 DMFN-5--**-30 DMFN-5--**-**-30 DMFN-5--**-30 DMFN-5--**-30 DMFN-5--**-**-30 DMFN-5--**-30 DMFN-5--**-30 DMFN-5N--**-**-30 DMFN-5N--**-30 DMFN-5N--**-30 DMFN-5N--**-**-30 DMFN-5N--**-30 DMFN-5N--**-30 DMFN-5N--**-30 (models not available)

28 Operating Data asic Characteristics Maximum flow: l/min (32 USgpm) Maximum operating pressure: bar (40 psi) Operating temperature: to C (70 to 120 F) Weight: ,1 kg (6.8 lbs.) Minimum Controlled Flow/No-Flow Leakage Internal leakage will vary from valve to valve and with the pressure differential across the check. pproximate levels are: ressure Drop bar (psi) Leakage* cc/min (in 3 /min) (725) 160 (9.5) 100 (14) 320 (19) 200 (2900) 640 (38) 315 (40) 990 (60) * Equals minimum controllable flow rate at the pressures stated. ressure Drop he curves below show the pressure drop through individual flow passages. Curves labeled metered flow/pressure drop refer to the pressure drop through only the passage containing the flow control regulating orifice. otal valve insertion loss is a value derived from graph 1 or 2 plus the appropriate values of lines 1, 2 and 3 from graph 3. ressure Drop bar raph 1 Metered flow pressure drop. Normal adjustment 2 models (see model code, page 24). Flow USgpm /2 turn turn 1 1/2 turns 2 turns ressure Drop psi 4 turns turns 8 turns 10 turns Flow l/min raph 2 raph 3 Metered flow pressure drop. Free flow pressure drop across Fine adjustment 1 models check valve. (see model code, page 24) /2 turn Flow USgpm turn 2 turns 3 turns 4 turns Flow l/min Note: urn or urns on curves in graphs 1 and 2, above, refer to turn of adjustment device from fully closed position. ressure Drop bar ressure Drop psi turns 8 turns turns ressure Drop bar 12 4 Flow USgpm ressure Drop psi Flow l/min raph 3 1 port of all models except DMFN-5--**-30 and ports of DMFN-5--**-30 2 port of all models except DMFN-5--**-30 ports of DMFN-5--**-30 3 ressure drop across reverse free flow check valve 26

29 Installation Dimensions DMFN-5-- & DMFN-5-- Single Flow Controls mm (inches) 3rd angle projection 4 mounting holes 6,9 (0.27) through 9, (0.37) counterbore 36,5 (1.44) deep for bolt extenders (order separately) KE-6M-M (M6 metric) or KE-4-M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) ISO 4401-C (NF D05) Mounting surface W models (max. ext.) 4 (5/32 ) Hex key Model DMFN ,4 (2.38) 28,4 (1.12) DMFN ,7 (2.07) 33,2 (1.31) 13,5 (0.53) 30 (1.18) (1.97) No hex plug on DMFN-5-- models 11,7 (0.46) 37 (1.46) 139 (5.47) 128 (5.04) 13 (1/2 ) Wrench size 71,6 (2.82) max. 69,5 (2.74) Rotate clockwise to decrease flow See page 37 for optional adjustment devices. See page 38 for interface dimensions. DMFN-5-- Single Flow Control mm (inches) 4 mounting holes (See above for specifications) ISO 4401-C (NF D05) Mounting surface 52,7 (2.07) W models (max. ext.) 4 (5/32 ) Hex key 13,5 (0.53) 20 (0.79) (1.97) 11,7 (0.46) 71,6 (2.82) max. 37 (1.46) 139 (5.47) 128 (5.04) 13 (1/2 ) Wrench size 33,2 (1.31) 69,5 (2.74) Rotate clockwise to decrease flow 27

30 DMFN-5-- Single Flow Control mm (inches) W models (max. ext.) 52,7 (2.07) 4 mounting holes (See page 27 for specifications) ISO 4401-C (NF D05) Mounting surface 4 (5/32 ) Hex key Rotate clockwise to decrease flow (1.97) 20 (0.79) 13,5 (0.53) 13 (1/2 ) Wrench size 139 (5.47) 128 (5.04) 37 (1.46) 11,7 (0.46) 69,5 (2.74) 33,2 (1.31) 71,6 (2.82) max. See page 37 for optional adjustment devices. See page 38 for interface dimensions. DMFN-5-- Single Flow Control W models (max. ext.) 4 (5/32 ) Hex key Rotate clockwise to decrease flow 52,7 (2.07) 4 mounting holes (See page 27 for specifications) ISO 4401-C (NF D05) Mounting surface (1.97) 30 (1.18) 13,5 (0.53) 13 (1/2 ) Wrench size 128 (5.04) 139 (5.47) 37 (1.46) 11,7 (0.46) 69,5 (2.74) 33,2 (1.31) 71,6 (2.82) max. 28

31 DMFN-5- Dual Flow Control mm (inches) W models (max. ext.) typ. both ends 4 (5/32 ) Hex key Rotate clockwise to decrease flow in port (1.97) 30 (1.18) 52,7 (2.07) 4 mounting holes (See page 27 for specifications) ISO 4401-C (NF D05) Mounting surface Rotate clockwise to decrease flow in port 13,5 (0.53) 13 (1/2 ) Wrench size both ends 128 (5.04) 37 (1.46) 11,7 (0.46) 69,5 (2.74) 33,2 (1.31) 71,6 (2.82) max. See page 37 for optional adjustment devices. See page 38 for interface dimensions. DMFN-5- Dual Flow Control mm (inches) W models (max. ext.) typ. both ends 4 (5/32 ) Hex key Rotate clockwise to decrease flow in port (1.97) 52,7 (2.07) 13,5 (0.53) 4 mounting holes (See page 27 for specifications) ISO 4401-C (NF D05) Mounting surface Rotate clockwise to decrease flow in port 20 (0.79) 13 (1/2 ) Wrench size both ends 128 (5.04) 37 (1.46) 11,7 (0.46) 69,5 (2.74) 33,2 (1.31) 71,6 (2.82) max. 29

32 DMC ilot Operated Check Valves eneral Description hese valves are single or dual check units. Dual check units have identical check elements located in the and cylinder port lines. he check valve poppets are moved into the open position by a central pilot control spool which moves toward one check or the other, depending on which port is pressurized. he check valve located in the return circuit is opened by the operating pressure in the primary circuit. When the pressure in the pilot line is vented, the check valve will remain closed. Model Code he pilot spool area to valve seat ratio is 3:1 on standard models, and 20:1 on models with the decompression feature. Check valve cracking (opening) pressures of 1 bar (15 psi), 2,5 bar (36 psi) and 5 bar (73 psi) are available. lease note that back pressure on the downstream or free-flow side of the pilot check valve may prevent the valve from opening in certain situations. (ack pressure opposes pilot pressure trying to open the valve.) In such cases, pilot pressure required to open the decompression poppet and valve can be calculated as follows: o open valve or poppet in line : ressure at 1 = + C - 1 rea ratio factor + 1 o open valve or poppet in line : ressure at 1 = + C - 1 rea ratio factor + 1 Where: = ressure at C = Cracking pressure 1 = ressure at 1 = ressure at 1 = ressure at 1 In the above cases, substitute cracking pressure and area ratio from the following: Cracking pressure: 1, 2.5 or 5 bar according to model code position 6 (and position 10 for second function). rea ratio factors: Standard valve: 3 Decompression poppet: Valve function Manifold or subplate mounted check valve. 2 Interface 5 - ISO 4401-C-05-4-, CEO R35H, Size 5 NSI/NF D05 5N - NF D05 (lt. ) 5 - NF D05 (lt. ) 3 Decompression feaure D - With decompression feature lank - Standard (no decompression) 4 Check port -Check in cylinder port -Check in cylinder port (single check models only) 5 ilot port -ilot port controlling the port check (single check models only) -ilot port controlling the port check 6 Cracking pressure K - 1,0 bar (15 psi) M - 2,5 bar (35 psi) N - 5,0 bar (75 psi) 7 Decompression feaure D - Decompression feature lank- Standard (no decompression) Omit for single check models. 8 Check port: second function Check in cylinder port Omit for single check models. 9 ilot port: second function -ilot port controlling the port check (dual check models only) Omit for single check models. 10 Cracking pressure: second function K - 1,0 bar (15 psi) M - 2,5 bar (35 psi) N - 5,0 bar (75 psi) Omit for single check models. 11 Design number - 30 series Subject to change. Installation dimensions unaltered for design numbers 30 to 39 inclusive. 30

33 Operating Data Functional Symbols DMC-5-* DMC-5N-* DMC-5-* DMC-5-* DMC-5N-* DMC-5-* DMC-5-*-* DMC-5N-*-* DMC-5-*-* asic Characteristics Maximum flow rate: l/min (32 USgpm) Maximum operating pressure: bar (40 psi) C (120 F) 35 bar (0 psi) Standard models ml/min. D models ml/min. bar (40 psi) ml/min. Operating emperature: C to C (70 to 120 F) Weight: ,9 kg (6.4 lbs) DMC ressure Drop he curves below show pressure drop through each functional flow path in the valve. Model ype DMC-5-(D)-*-30 DMC-5-(D)-*-30 DMC-5-(D)-*-(D)-*-30 Curve Number Flow toward actuator without ckeck single check only Flow from actuator without check single check only Use K, M, or N cracking pressure curve as applicable. 5 5 he total insertion loss for the valve must be calculated by summing the losses through the four applicable flow paths ressure drop bar Flow USgpm M K Flow l/min N ressure drop psi 31

34 Installation Dimensions DMC-5-30 ilot Operated Check Valve mm (inches) See page 38 for interface dimensions. 4 mounting holes 6,9 (0.27) through 9, (0.37) counterbore 36,5 (1.44) deep for bolt extenders (order separately) KE-6M-M (M6 metric) or KE-4-M ( UNC) orque: 11,3-14,7 Nm ( lb. in.) 9,9 (0.39) 30 (1.18) (1.97) 9,9 (0.39) 13,5 (0.53) ISO 4401-C (NF D05) Mounting surface 11,7 (0.46) 37 (1.46) 128 (5.04) 71,6 (2.82) max. 33,2 (1.31) 69,5 (2.74) 32

35 DMDC Direct Check Valves eneral Description hese SystemStak valves are self-operating, spring loaded, poppet type single or dual check units. Location of the check element can be in the,, or port. check in the port is available as a single check model only. check in the port is available as an single check model only. he dual check unit has identical check elements in both the and ports. Check valve cracking (opening) pressures of 1 bar (15 psi), 2,5 bar (35 psi) and 5 bar (75 psi) are available. Model Code Valve function Manifold or subplate mounted check valve. 2 Interface 5 - ISO 4401-C-05-4-, CEO R35H, Size 5 NSI/NF D05 5N - NF D05 (lt. ) 5 - NF D05 (lt. ) 3 Direction of flow - Free flow from actuator (load) - Free flow to actuator (load) 4 5 Check location -Check in cylinder port ( models only) -Check in cylinder port ( models only) -Check in pressure port ( models only) - Check in tank port ( models only) K - M - N - Cracking pressure 1,0 bar (15 psi) 2,5 bar (35 psi) 5,0 bar (75 psi) 6 Check location: second function Omit for single check models. -Check in cylinder port (dual check models only) 7 Cracking pressure: second function Omit for single check models. K - M - N - 8 1,0 bar (15 psi) 2,5 bar (35 psi) 5,0 bar (75 psi) Design number - 30 series Subject to change. Installation dimensions unaltered for design numbers 30 to 39 inclusive. 33

36 Functional Symbols DMDC-5--*-30 DMDC-5--*-30 DMDC-5--*-30 DMDC-5N--*-30 DMDC-5--*-30 DMDC-5--*-30 DMDC-5N--*-30 DMDC-5--*-30 DMDC-5--*-*-30 DMDC-5N--*-*-30 DMDC-5--*-*-30 DMDC-5--*-30 DMDC-5N--*-30 DMDC-5--*-30 34

37 Operating Data asic Characteristics Maximum flow: l/min (32 USgpm) Maximum operating pressure: bar (40 psi) C (120 F ) and 35 bar (0 psi) ml/min. Operating temperature: to C (70 to 120 F) Weight: ,9 kg (6.4 lbs.) resure Drop hese curves show pressure drop though each possible flow path in the valve. he total insertion loss for the valve must be calculated by summing the losses through the four applicable flow paths. Model ype Curve Reference for Flow ath raph Number DMDC-5--K-30 DMDC-5--M-30 DMDC-5--N-30 DMDC-5--K-30 DMDC-5--M-30 DMDC-5--N-30 DMDC-5--K-30 DMDC-5--M-30 DMDC-5--N-30 DMDC-5--K-30 DMDC-5--M-30 DMDC-5--N-30 K M N 1 K M N 2 K M N 1 DMDC-5--*-*-30 Flow to actuator through cylinder port without check Flow from actuator through cylinder port without check Use K, M, or N curve from graph 3, as applicable K M N 3 ressure Drop bar raph Flow USgpm K M Flow l/min N ressure Drop psi ressure Drop bar raph Flow USgpm K N M ressure Drop psi Flow l/min ressure Drop bar raph 3 Flow USgpm N M 2 15 K Flow l/min ressure Drop psi 35

38 Installation Dimensions DMDC-5--*-*-30 Dual Direct Check Valve mm (inches) 4 mounting holes 6,9 (0.27) through 9, (0.37) counterbore 36,5 (1.44) deep for bolt extenders (order separately) KE-6M-M (M6 metric) or KE-4-M ( UNC). orque: 11,3-14,7 Nm ( lb. in.) 9,9 (0.39) (max.) 13,5 (0.53) 30 (1.18) (1.97) 9,9 (0.39) ISO 4401-C (NF D05) Mounting surface 11,7 (0.46) 37 (1.46) 128 (5.04) 71,6 (2.82) max. 33,2 (1.31) 69,5 (2.76) See page 38 for interface dimensions. DMDC-5--*-30 Single Direct Check Valve DMDC-5--*-30 Single Direct Check Valve 4 mounting holes (See above for specifications) 9,9 (0.39) (max.) 4 mounting holes (See above for specifications) 9,9 (0.39) (max.) 13,5 (0.53) (1.97) 13,5 (0.53) 30 (1.18) (1.97) ISO 4401-C (NF D05) Mounting surface 17 (.669) ISO 4401-C (NF D05) Mounting surface 36

39 Knob djusters DMC DMC2 (dual type) DMR1 DM2 56,8 (2.24) H models (max. ext.) K models 82,9 (3.26) max. ext. 45 (1.77) For key removal 2 (5/64 ) Hex key required for adjustment djustment of valve setting is only possible while key is inserted and turned to engage driving pin. When key is removed, adjuster knob can be freely spun and does not engage with setting mechanism. DMC2 (crossport type) 54,1 (2.13) H models (max. ext.) K models 80,1 (3.15) max. ext. 45 (1.77) For key removal 2 (5/64 ) Hex key required for adjustment djustment of valve setting is only possible while key is inserted and turned to engage driving pin. When key is removed, adjuster knob can be freely spun and does not engage with setting mechanism. DMFN C H models (max. ext.) K models max. ext. D 45 (1.77) For key removal 2 (5/64 ) Hex key required for adjustment Model C D DMFN ,9 (2.37) 95 (3.74) DMFN ,9 (2.44) 88 (3.46) djustment of valve setting is only possible while key is inserted and turned to engage driving pin. When key is removed, adjuster knob can be freely spun and does not engage with setting mechanism. DMR H Handknob 74,4 (2.93) W Screw with locknut C Cap over screw 65,6 (2.58) 68,5 (2.70) 2 (5/64 ) Hex key required for adjustment 13 (1/2 ) Wrench size 4 (5/32) Hex key 13 (1/2 ) Wrench size 37

40 Mounting Surface Dimensions mm (inches) DM**-5 he 5 interface accepts Vickers D4S4 directional valves and other directional valves with a standard ISO , NF-D05, NSI/93.7M size D05 or CEO-5 port pattern. DM**-5N he 5N NF-D05 interface accepts Vickers D3S-5, D5S-5, D5V-5 and D18S4-01 directional valves. DM**-5 he 5 NF-D05 interface accepts Vickers D5S4-02 directional valves. 38

41 olt Extender Kits ISO SystemStak valves may be mounted with either standard cap screws or bolt extender kits. Metric cap screws must be of Class 12,9 (ISO 898) strength, minimum U..S. = 1200 Ma. SystemStak Metric Valve Height Inch threaded screws must conform to NSI he use of Vickers bolt extenders simplifies installation by permitting each valve body to be separately installed with the correct torque value. major Inch mm (inch) hread Kit Model Number hread Kit Model Number (1.97) M6 x 1-6H KE-6M-M UNC KE-4-M 60 (2.36) M6 x 1-6H KE-6M-60M UNC KE-4-60M advantage of bolt extenders is the ability to remove the directional valve for service or replacement without disturbing the stack assembly. here are 4 bolt extenders per kit. Extender orque 11,3-14,7 14 Nm ( lbf in) olt extender cross section Example of bolt extenders on a typical SystemStak assembly 4,0 ( 5 / 32 ) hex socket for tightening olt Extender M6 x 1 or thread Directional Valve 4 ( 5 / 32 ) hex socket 60 (2.36) SystemStak Valve 4 ( 5 / 32 ) hex socket (1.97) SystemStak Valve ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉ Standard socket head cap screw olt extender kit KE-6M-60M or KE-4-60M olt extender kit KE-6M-M or KE-4-M Manifold lock 12 (0.47) minimum thread engagement 39

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