Cartridge Valves
Cavity: 11A-3
Rated Flow: 2.64 gpm from Port 1 to Port 2, 15.85 gpm from Port 2 to Port 1 10 L/min from Port 1 to Port 2, 60 L/min from Port 2 to Port 1
Ordering Code:CB-11A-3A-H-L10

Ultra-restrictive, maximum setting 280 bar

Configuration
Reset To Default
Pilot Ratio
  • Standard Options
  • 3A1.5 : 1 (with sealed pilot)
  • 3C3 : 1 (with sealed pilot)
Springs
  • Standard Options
  • H70 - 280 bar (standard setting 210 bar, cracking pressure 1.7 bar)
  • I25 - 105 bar (standard setting 70 bar, cracking pressure 1.7 bar)
  • A70 - 280 bar (standard setting 210 bar, cracking pressure 0.3 bar)
  • B25 - 105 bar (standard setting 70 bar, cracking pressure 0.3 bar)
Options
  • Standard Options
  • LLeakproof hex socket screw
  • LPLeakproof hex socket screw with stainless steel external metal components
  • CStainless steel tamper resistant cover
  • CPStainless steel tamper resistant cover with stainless steel external metal components

Note: Data may vary by configuration. See CONFIGURATION section.

Cavity 11A-3
Rated Flow 2.64 gpm from Port 1 to Port 2, 15.85 gpm from Port 2 to Port 1 10 L/min from Port 1 to Port 2, 60 L/min from Port 2 to Port 1
Maximum Recommended Load Pressure at Maximum Setting 3100 psi 215 bar
Maximum Setting 4000 psi 280 bar
Factory Pressure Settings Established at 109.84 cu in/min 1.8 LPM
Reseat 85% of setting
Valve Hex Size 7/8 in. 22.22 mm
Valve Installation Torque 30 - 37 lbf-ft 40 - 50 Nm
Adjustment Screw Internal Hex Size 5/32 in. 4 mm
Locknut Hex Size 9/16 in. 14 mm
Locknut Torque 4 - 5 lbf-ft 6 - 7 Nm
Weight 0.33 lbs (Z=L, LP) 0.15 kg (Z=L, LP)
Ultra-restrictive counterbalance valves (overcenter valves) with pilot assist provides static and dynamic control of loads to prevent overrunning of hydraulic actuators such as cylinders or motors. The check section allows free flow from port 2 to port 1 then holds and locks the load against movement. The direct-acting, pilot-assisted relief valve section control flow from port 1 to port 2 when pilot pressure is applied. Pilot pressure at port 3 reduces the pressure setting by pilot ratio of counterbalance valve but the pressure required to open the valve and start actuator movement can be calculated as follows: Pilot Pressure = [(Relief setting)-(Load Pressure)]/ Pilot Ratio. Due to the spring chamber being referenced to atmosphere, the valve setting is insensitive to back pressure at port 2. Varying the pilot ratios can optimize the hydraulic system by providing stable load control and improving energy efficiency.

  • This is a pilot-assisted, poppet type valve.
  • Reduce valve setting and release load by turning screw clockwise.
  • Restrictive counterbalance valves function with relief, including thermal relief.
  • The pressure setting will increase when back pressure at port 2. PS=(PR+1)xBP; PS=Pressure Setting, PR=Pilot Ratio, BP=Back Pressure.
  • There are two check valves cracking pressures supplied. Winner® recommends applying the 1.7 bar (25 psi) check except actuator cavitation is a concern.
  • Counterbalance valve is ideal for mounting directly near or in cylinder, hydraulic motor and rotary actuator as protection to increase the safety of the circuit. 
  • Pressure setting should be at least 1.3 times the maximum load-induced pressure. ( We suggest when the maximum setting pressure is 280 bar, the load pressure has to be lower than 215 bar.)
  • When a valve is set at standard pressure, it is important to note that the reseat percentage should not exceed 85% of the set pressure, or it will lower the reseat performance.
  • External components are WINNERcoat® Zinc-Nickel Plating for 1000 hours salt spray test  according to DIN EN ISO 9227. Also, some ordering code with letter “P” at the end is stainless steel external components. The ordering code with letter “S” at the end is all components of cartridge valve are made of stainless steel for special requirements such as deep sea, marine, or water based hydraulic.
  • Internal components are made of high-quality alloy steel, processed heat treatment and precision machined to achieve excellent wear resistance, low leakage, smooth movement and long service life.
  • Winner guarantees that all products performance a 100% functional test before shipment.
pressure differential and flow typical performance curve for CB11A---10 ultra-restrictive counterbalance valve, maximum setting 280 bar, showing pressure and flow characteristics
Technical Information:

Seals Information: