COMAC CAALOG MONOBLOCK DIRECIONAL CONROL VALVES
Features Simple, compact designed, this valve is only one section for open center and closed center hydraulic systems. H Fitted with a main pressure relief valve. H Diameter 6 mm --.63 in interchangeable spools. H Available manual and remote with flexible cables spool control kits. Working conditions his catalog shows technical specifications and diagrams measured with mineral oil of 46 mm /s -- 46 cst viscosity at 4 C -- 4 F temperature. Nominal flow rating 45 l/min US gpm Operating pressure (maximum) 5 bar 36 psi Back pressure (maximum) on outlet port 5 bar 36 psi Internal leakage A(B) Fluid p= bar - 45 psi fluid and valve at 4 C - 4 F 3 cm 3 /min.8 in 3 /min Mineral base oil Fluid temperature range with NBR (BUNA -N) seals from -- to 8 C from -4 to 76 F with FM (VION) seals from -- to C from -4 to F 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 NAS 638 - class Ambient temperature range from --4 to 6 C from -4 to 4 F NOE -- For different conditions please contact Customer Service. Additional information his catalog shows the product in the most standard configurations. lease contact Customer Service Dpt. for more detailed information or special request. WARNING! All specifications of this catalog refer 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. 5 th edition December : his edition supercedes all prior documents. DACA
Dimensional data WALVOIL MADE IN IALY WALVOIL MADE IN IALY roduction batch : = production year () = progressive number Valve code 3. 9 3.6 46.8 55.7 37.46 8. 84.5 7.6.43 max.79 44.73 4.57 96 3.78 37.46 7.76 8..3 4.57 osition 5 5 osition osition 3.9 3.8 M 8.79 85.5 3.37 Standard threads OR BS (ISO 8/) UN -UNF (ISO 96 -) Inlet 3/4--6 UNF--B (SAE 8) MERIC (ISO 6) A and B ports G 3/8 9/6--8 UNF--B (SAE 6) M8x.5 Outlet 3/4--6 UNF--B (SAE 8) DACA 3
Hydraulic circuit Standard valve is supplied with positive overlap spool (C). 75 Ex.: SD4/(KG3--)/C8L Right inlet A simmetrical body allows the reverse assembly of spool and relative control kit and lever (ED configuration). B A 75 Ex.: SD4/(KG3--)/ED -C8L 4 DACA
erformance data (pressure drop vs. flow) Open center From inlet to outlet. (bar) 5 5 (US gpm) A B ressure drop 8 6 4 (psi) 5 5 3 45 6 Flow (l/min) Inlet to work port From inlet to A port (spool in position ) or B port (spool in position ). (bar) 5 5 (US gpm) A B ressure drop 8 6 4 (psi) 5 5 3 45 6 Flow (l/min) Work port to outlet From A port (spool in position ) or B port (spool in position ) to outlet. (bar) 5 5 (US gpm) A B ressure drop 8 6 4 (psi) 5 5 3 45 6 Flow (l/min) NOE -- Measured with spool type C. DACA 5
Ordering codes Example: SD4 / (KG3 -) / C 8 L - SAE *.. 3. 4. 5. ressure relief valve setting in bar 4.. Body kits * YE CODE DESCRIION 5KC7 section 8 Include boby and seals.. Inlet relief options YE CODE DESCRIION VMD5/ direct pressure relief valve type K (standard) (KG-8) 5KI5 Range 4 to 8 bar / 58 to 5 psi standard setting 8 bar / 5 psi (KG3-) 5KI53 Range 63 to bar / 9 to 9 psi standard setting bar / 75 psi (KG4-) 5KI54 Range 6 to 5 bar / 3 to 36 psi standard setting bar / 3 psi VMD5/ direct pressure relief valve type Y (YG-8) 5KI5 Range 63 to 6 bar / 9 to 3 psi standard setting 8 bar / 5 psi (YG3-75) 5KI53 Range 5 to 5 bar / 8 to 36 psi standard setting 75 bar / 5 psi Standard setting is referred to l/min -.6 US gpm flow. SV XA638 Relief blanking plug 9 - - 5-6 7. I 3. Spool options YE CODE CIRCUI DESCRIION C 3CU Double acting with positive overlap, 3 positions, A and B closed in neutral position N 3CU Double acting, 3 positions, A and B closed in neutral position, negative overlap 3CU53 Double acting, 3 positions, with A open to tank in neutral position 3 3CU33 Single acting on A, 3 positions, B plugged; requires SAE 6 plug (see part I ) 4 3CU354 Single acting on B, 3 positions, A plugged requires SAE 6 plug (see part I ) 6 3CU53 Double acting, 3 positions, closed center 7 3CU553 Double acting, 3 positions, closed center with A and B to tank in neutral position 8. K Y SV NOE (*) -- Items are referred to UN- UNF thread. 6 DACA
Ordering codes II 5. L 4. A side spool positioners YE CODE DESCRIION 8 5V84 With spring return in neutral position 9 5V94 With detent in position 5V4 With detent in position 5V4 With detent in position, neutral and 5V4 With detent in position and 5 5V54 With detent in position and neutral 6 5V64 With detent in position and neutral 7 5V74 With spring return position 8 5V84 With spring return position LEB 5. B side options YE CODE DESCRIION L 5LEV5 Standard lever box LEB 5LEV65 Safety lever with handlever, detent in 3 positions SL 5CO5 Without lever, with dust proof plate 5EL55 Cable connection 3. SL I ort plug * YE CODE DESCRIION SAE 6 3XA873 lug for single acting spool II Optional handlever YE CODE DESCRIION AL/M8x 7 Standard handlever L= mm/4.7in For special configurations see pages 9 and DACA 7
Spools options C A 3 B port plugged B 4 6 7 A port plugged A side spool positioners 4.57 44.5.75 49.93 8 9 7 5 6 8 8 DACA
Special configurations Directional valve with rotary control kit 9 3.6 57.5.6 55.7 max 8 7.7 96 3.78 8.5 8. 37.5.48 Standard body kit -5.5 -. 6.5.6 Optional handlever code: 3XGIU46 Stroke +5.5 +. 4..95 33.3 Angle excursion ± 9.79 8 7.9 75 Ex.: SD4/ (KG3--)/ N R SL Dust proof plate kit: code 5CO5 Rotary positionerl kit: code 5RO4 Spool: code 3CU56 (negative overlap) DACA 9
Special configurations Detent with kick -out from position to neutral position Spool control kit with fix setting, available with kick--out pressure of 63 and 8 bar (9 and 5 psi). 9 3.6 55.7 max. 7.5.8 6 8.5 96 3.78 Special body kit: code 5KC36 47.5.87 3.5.93 M 8.79 85.5 3.37 75 Ex.: SD4/ (KG3--)/ N 9A(8) LA Special lever box: code 5LEV4 ositioner kit with 63 bar / 9 psi setting code 5V954 ositioner kit with 8 bar / 5 psi setting code 5V9548 Spool: code 3CU3 (negative overlap) DACA
Installation and maintenance he SD4 valve is assembled and tested as per the technical specification of this catalog. Before the final installation on your equipment, follow the below recommendation: -- 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 port A and B ports port BS (ISO 8/) G 3/8 G 3/8 G 3/8 With O--Ring seal 35 / 5.8 35 / 5.8 35 / 5.8 With copper washer 4 / 9.5 4 / 9.5 4 / 9.5 With steel and rubber washer 3 /. 3 /. 3 /. UN--UNF (ISO 96--) 3/4--6 UNF--B (SAE 8) 9/6--8 UNF--B (SAE 6) 3/4--6 UNF--B (SAE 8) With O--Ring seal 5 / 36.9 3 /. 5 / 36.9 MERIC (ISO 6) M8 x.5 M8 x.5 M8 x.5 With O--Ring seal 35 / 5.8 35 / 5.8 35 / 5.8 With copper washer 4 / 9.5 4 / 9.5 4 / 9.5 with steel and rubber washer 4 / 9.5 4 / 9.5 4 / 9.5 NOE -- hese torque are recommended. Assembly tightening torque depends on many factors, including lubrication, coating and surface finish. he manufacturer shall be consulted. DACA
WALVOIL S..A. 4 REGGIO EMILIA IALY VIA ADIGE, 3/D EL. +39.5.934 FAX +39.5.3984 E -MAIL: INFO@WALVOIL.COM H: //WWW.WALVOIL.COM SALES DEARMEN EL. +39.5.93555 FAX +39.5.93455 D4988I DACA