COMPACT CATALOGUE MONOBLOCK DIRECTIONAL CONTROL VALVES

Transcription

1 COMAC CAALOGUE MONOBLOCK DIRECIONAL CONROL VALVES

2 SD4 Features Simple, compact designed, this valves is only one section for open centre and closed centre hydraulic systems. H Fittedwithamainpressurereliefvalve. H Diameter mm in interchangeable spools. H Available manual, pneumatic, electro--hydraulic and remote with flexible cable spool control kits. Working conditions his catalogue shows technical specifications and diagrams measured with mineraloil of46 mm /s cst viscosity at 4 C temperature. Nominal flow rating l/min Operating pressure (maximum) 5 bar 36 psi Back pressure (maximum) on outlet port 5 bar 36 psi Internal leakage A(B) p= bar - 45 psi fluid and valve at 4 C - 4 F 3cm 3 /min.8 in 3 /min Fluid Mineral base oil Fluid temperature with NBR (BUNA -N) seals from -- to 8 C with FM (VION) seals from -- to C Viscosity operating range from 5 to 75 mm /s from 5 to 75 cst min mm /s cst max 4 mm /s 4 cst Max level of contamination 9/6 -- ISO 446 Ambient temperature from --4 to 6 C NOE -- For different conditions please contact Sales Dept. Additional information his catalogue shows the product in the most usual configurations. lease contact Sales Dpt. for more detailled information or special request. WARNING! All specifications of this catalogue refers to the standard product at this date. Walvoil, oriented to a continuous improvement, reserves the right to discontinue, modify or revise the specifications, without notice. WALVOIL IS NO RESONSIBLE FOR ANY DAMAGE CAUSED BY AN INCORREC USE OF HE RODUC. 7 th edition October : his edition supercedes all prior documents. DAC5E

3 SD4 Dimensional data osition M osition 6 osition WALVOIL 5 MADE IN IALY WALVOIL 5 MADE IN IALY roduction batch : = production year () = progressive number Valve code Standard threads OR Inlet BS (ISO 8/) UN -UNF (ISO 96 -) A and B ports G 3/4 /6-- UN--B (SAE ) Outlet ILO ORS neumatic NF /8--7 NF /8--7 DAC5E 3

4 SD4 Hydraulic circuit Standard valve is supplied with positive overlap spool (C). AB 75 5 Ex.: SD4/(YG3--75)/C8L Right inlet A simmetrical body allows the reverse assembly of spool and relative control kit and lever (ED configuration). BA 75 5 Ex.: SD4/(YG3--75)/ED -C8L 4 DAC5E

5 SD4 erformance data (pressure drop vs. flow) Open centre From inlet to outlet. A (bar) 5 7 (psi) B ressure drop Flow (l/min) Inlet to work port From inlet to A port (spool in position ) orb port (spool in position ). A B ressure drop (bar) (psi) Flow (l/min) Work port to outlet From A port (spool in position ) orb port (spool in position ) to outlet. A (bar) 5 7 (psi) B ressure drop NOE -- Measured with spool type C. 5 5 Flow (l/min) DAC5E 5

6 SD4 Ordering codes Description example: SD4 / (YG3-75) / C 8 L * ressure relief valve setting in bar 4.. Body kits * YE CODE DESCRIION 5KC634 section Include boby, seals and rings. 8 I 6.. Inlet relief options YE CODE DESCRIION VMD/ direct pressure relief valve type Y (YG -5) 3XCAR Range 8 to 6 bar / 5 to 3 psi standard setting 5 bar / 8 psi (YG3-75) 3XCAR3 Range 5 to 5 bar / 8 to 36 psi standard setting 75 bar / 5 psi (YG4 -) 3XCAR4 Range to 35 bar / 9 to 46 psi standard setting bar / 3 psi VM/ pilot operated pressure relief valve type X (XG -5) X6 Range 5 to 35 bar / 36 to 46 psi standard setting 5 bar / 8 psi Standard setting is referred to l/min flow. 9B -B -B SV XA5634 Relief valve blanking plug 3. Spool options YE CODE CIRCUI DESCRIION C 3CU54 Double acting with positive overlap, 3 positions, A and B closed in neutral position N 3CU5 Double acting, 3 positions, A and B closed in neutral position 3CU556 Double acting, 3 positions, with A and B open to tank in neutral position 3C 3CU534 Single acting on A, 3 positions, B plugged requires G3/4 plug (see part I ) 4C 3CU5354 Single acting on B, 3 positions, A plugged requires G3/4 plug (see part I ) 6 3CU55 Double acting, 3 positions, closed center 7 3CU555 Double acting, 3 positions, closed center with A and B to tank in neutral position 8F 8EI3. K Y X SV NOE (*) -- Items are referred to BS thread. 6 DAC5E

7 SD4 Ordering codes II 5. L 4. A side spool positioners YE CODE DESCRIION 8 5V8 With spring return in neutral position 9B 5V9 With detent in position and spring return in neutral position B 5V9 With detent in position and spring return in neutral position 5V With detent in position, neutral and B 5V With detent in position and, spring return in neutral position 5 5V5 With detent in position and neutral 6 5V6 With detent in position and neutral 8F 5V875 roportional pneumatic kit 8EI3 5V835 VDC ON/OFF electro -hydraulic kit 5V835 4 VDC ON/OFF electro -hydraulic kit 3. SL 5. B side handle options YE CODE DESCRIION L 5LEV Standard lever box SL 5CO Without lever, with dust proof plate 5EL5 CG cable connection Q 5EL CD cable connection 6. Inlet and outlet selection * YE CODE DESCRIION SL 3XA73 G3/4 plug for side inlet and outlet (nr. plugs required). Standard configuration; SL must be omitted SA 3XA73 G3/4 plug for upper inlet and outlet (nr. plug required) Q I ort plug * YE CODE DESCRIION G3/4 3XA73 lug for single acting spool II Optional handlevers YE CODE DESCRIION AL/Mx 7 Lenght L = mm / 7.87in For special configurations see pages 9 and DAC5E 7

8 SD4 Spools options A B C A B A 3 B port plugged B 4 A B A B 6 7 A port plugged A side spool positioners N/ V V V V Operating features Adjustment range : from to 6.5 bar (9to94psi) diagram 5A Max.pilot pressure : bar (45 psi) 8F roportional pneumatic kit 5 6 Optional connector code: X Connection ISO L Solenoid operating features Nominal voltage : VDC / 4 VDC ower rating.. : W Duty cycle... : % V 9B B B Feeder kit (see catalogue SDS5 at page 3) V L EI3 ON/OFF electro--hydraulic kit 8 DAC5E

9 SD4 Special configurations Directional valve with rotary control kit max Standard body Optional handlever code: 3XGIU46 Angle excursion ± Stroke AB 75 5 Ex.: SD4/(YG3--75)/ NRSL Dust proof plate kit: code 5CO Rotary positionerl kit: code 5RO Spool: code 3CU556 (egative overlap) DAC5E 9

10 SD4 Special configurations Spool in regenerative 4 th position Special body kit: code 5KC635 5 osition osition 3 osition AB osition Ex.: SD4/(YG3--75)/ 8 3F L ositioner kit: code 5V36 Spool: code 3CU563 DAC5E

11 SD4 Installation and maintenance he SD4 valve is assembled and tested as per the technical specification of this catalogue. Before the final installation on your equipment, follow the below recommendations: -- the valve can be assembled in any position, in order to prevent body deformation and spool sticking mount the product on a flat surface; -- in order to prevent the possibility of water entering the lever box and spool control kit, do not use high pressure wash down directly on the valve; -- prior to painting, ensure plastic port plugs are tightly in place. A B Fitting tightening torque - Nm / lbft HREADS YE All ports BS (ISO 8/) G3/4 With O--Ring seal 9 / 66.4 With copper washer 6 / 44.3 With steel and rubber washer 7 / 5.6 UN--UNF (ISO 96--) /6--UN--B(SAE) With O--Ring seal 95 / 7 NOE -- hese torque are recommended. Assembly tightening torque depends on many factors, including lubrication, coating and surface finish. he manufacturer shall be consulted. DAC5E

12 WALVOIL S..A. 4 REGGIO EMILIA IALY VIA ADIGE, 3/D EL FAX E -MAIL: INFO@WALVOIL.COM H: // SALES DEARMEN EL FAX D4988I DAC5E