DENISON HYDRAULICS Seat Valves Cartridges

FEATURES • The same modular design is used in all valve sizes and the valve are used for a - as a leak proof directional control - as a pressure control for the adjustment or limitation of pressure - as a check valve to obtain unidirectional flow - as a throttle valve to control and limit the rate of flow. • A variety of standard combinations of internal components are provided as well as additional options to suit special circuitry. Typical of more than sixty options/ additions are: Stroke limiters, vent valve sandwich, shuttle valves, end position control and sleeves with different seat areas....

DESCRIPTION DENISON Seat valves are hydrauIically operated poppet type cartridges design to control flow direction eitherfrom Port Ato Port B or vice versa depending upon the control circuit. The cracking pressure is proportional to the ratio of control area to seat or ring Pilot pressure at Port X acting on the control area closes the seat valve thus forces generated by cylinders or hydraulic motors can be decelerated to zero by control- ling the differential pressure. Acceleration or deceleration of the fluid which the seat valve is controlling will take place whilst the valve is opening or...

Port sizes Mounting position Ambient temperature range working conditions Seat valve Poppet type Manifold mounted Consult DENISON HYDRAULIC CHARACTERISTICS • Operating pressure range » Fluid temperature range Viscosity range without pressure to tank • Recommended operating viscosity 30 cSt Nominal flow Pilot volume - sleeve 95 % seat area, - sleeve 95 % seat area, - sleeve 60 % seat area, Flow (l/min) Leakage (cm3/min) X^B TYPE OF ADJUSTMENT • Electric (Vent valve VV01) • Nominal voltage • Permissible voltage difference • Input power • Relative operating period Referto ordering code page 12

CONTROL FUNCTIONS AVAILABLE The following are typical of the functions which can be achieved in a circuit incorporating single or multiple seat valves. pressure Direction Area Z1 px of flow Notes vent valve. When vented, the cracking pressure equals the spring force. connected with = pA A & B blocked Area Z1 may be connected via port A and B or a shuttle valve to ports A and B. = pB The holding pressure on Z1 will be supplied from port A or Port B, depending upon which is the An adjustable stroke limiter can be selected to limit the spool aperture, which produces flow restriction in either direction....

ORDERING CODE, RECOMMENDATIONS Model Number: K = main valve (spool, sleeve, spring) H = main valve with cap 0*= main valve and plug on top T* = main valve and plug on top ; main valve and plug at the bottom ; main valve and plug at the bottom with closed bottom and 15° chamfer = with 0.8 mm dia. orifice at the bottom and 15° chamfer (only CAR4) with 1.2 mm dia. orifice at the bottom and 15°chamfer(onlyCAR2) = with closed bottom and 45° chamfer = with closed bottom and 45° chamfer and two holes in line = throttle spool with 10° chamfer = throttle spool with 3° chamfer -|~5~j Spring (approx. cracking...

DIMENSIONS FOR CAR 4–K & CAR 4–H CAR 4-K Weight: 0.07 kg Example of spool code 4 spool with closed bottom and 45h chamfer Ports Function A Inlet or Outlet B Outlet or Inlet CAR 4-H Weight: .0 kg Mounting screws must be ordered separately: 4 Screws 3 ⁄ 8 HH–24 UNF x 3 ⁄ 4 HH lg. . . . . . . . . or M 0 x 45; DIN 92-0.9 . . . . . . . . . . 4 Lock washer . . . . . . . . . . . . . . . . Order no. 359–15220–0 700–71602–8 700–72166–8 (G 1 ⁄ 4 HH) Port Y: only in connection with vent valve VV01 Example of spool code 2 spool with 0.8 mm dia. orifice at the bottom and 5h chamfer 3 ⁄ 8 HH–24 UNF or M 0...

DIMENSIONS FOR CAR 4–0/T & CAR 4–U/B CAR 4-0/T Weight: 0.1 kg CAR 4–0 CAR 4–T torque 30 Nm G 7 ⁄ 8 HH ⁄ 8 HH–12 UNF * CAR 4–0 = 15 h CAR 4–T = 20 h Series CAR 4-O/T only with spool type 5, with closed bottom, 45 h chamfer and two holes in line Ports Function A&B Inlet or Outlet (optional) CAR 4-U/B Weight: 0.1 kg torque 30 Nm CAR 4–U pilot hole 1) 1) CAR 4–B Inlet or Outlet (optional) X CAR 4–U Function A&B CAR 4–B G 7 ⁄ 8 HH 31,5 l min. Ports 1 1 ⁄ 8 HH-12 UNF 30 l min. Example of spool code 1 spool with closed bottom and 5h chamfer drilled according to function 8 Ordering Code Back to Content...

DIMENSIONS FOR CAR 2–K & CAR 2–H CAR2-K Weight: 0.25 kg Example of spool code 1 spool with closed bottom and 5h chamfer Example of spool code 2 spool with 1.2 mm dia. orifice at the bottom and 5h chamfer Ports Function A Inlet or Outlet B Outlet or Inlet CAR 2–H Weight: 1.1 kg Mounting screws must be ordered separately: 4 Screws 3 ⁄ 8 HH–24 UNF x 3 ⁄ 4 HH lg. . . . . . . . . or M 0 x 45; DIN 92-0.9 . . . . . . . . . . 4 Lock washer . . . . . . . . . . . . . . . . Port Y: only in conection with vent valve VV01 Order no. 359–15220–0 700–71602–8 700–72166–8 Y 1 (G ⁄ 4 HH) 43.5 Example of spool code...

DIMENSIONS FOR CAR 2–0 & CAR 2–U CAR2-0 Weight: 0.7 kg G ⁄ 2 HH torque 30 Nm reamer access max. 4 mm Example of spool code 2 spool with 1.2 mm dia. orifice at the bottom and 5h chamfer Ports Function A&B X Inlet or Outlet (optional) pilot port CAR 2–U Weight: 0.7 kg Example of spool code 5 spool with closed bottom, 45h chamfer and two holes in line reamer access G 1 1 ⁄ 2 HH torque 30 Nm Ports Function A&B X Inlet or Outlet (optional) pilot port 10 Ordering Code Back to Content

SHUTTLE VALVES FOR CAR 4–H & CAR 2–H Order no. S16–39303–0 / Weight: 1.2 kg S16–92523–0 / Weight: 0.8 kg 4 Mounting screws must be ordered separately: Order no. 3 ⁄ 8 HH–24 UNF x 5⁄2HH lg. or M 0 x 40; DIN 92–2.9 359–15420–8 361–11424–8 k for version with shuttle valve S16–39303–0 359–15380–8 for version with shuttle valve S6–92523–0 700–71456–8 k 3 ⁄ 8 HH–24 UNF x 4⁄2HH lg. or M 0 x 20; DIN 92–0.9 G ⁄ 4 HH, external drain only out of the cap 90 cap of CAR 4-H or CAR 2-H 94 (73) 33 (2) 47 (26) 70 max. vent valve VV01 (see page 12) 39 (8) max. shuttle valve S6–39303–0 or S6–92523–0 Coil can be...