カートリッジ弁
  • 技術データ
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Note: Data may vary by configuration. See CONFIGURATION section.

Cavity 2A-3
Rated Flow 8.45 gpm from Port 1 to Port 2, 31.7 gpm from Port 2 to Port 1 32 L/min from Port 1 to Port 2, 120 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 1-1/8 in. 28.57 mm
Valve Installation Torque 44 - 52 lbf-ft 60 - 70 Nm
Locknut Hex Size 9/16 in. 14 mm
Locknut Torque 4 - 5 lbf-ft 6 - 7 Nm
Weight 0.62 lbs (Z=L) 0.28 kg (Z=L)
Restrictive counterbalance valves (overcenter valve) with pilot assist provides static and dynamic control of loads to prevent overruning 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.

  • This is a pilot-assisted, poppet type valve.
  • Restrictive counterbalance valves function with relief, including thermal relief.
  • Reduce valve setting and release load by turning screw clockwise.
  • The pressure setting will increase when back pressure at port 2. PS=(PR+1)xBP; PS=Pressure Setting, PR=Pilot Ratio, BP=Back Pressure
  • 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 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 reaseat performance.
  • 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.
  • There are two check valve cracking pressures supplied. Winner® recommends to apply the 1.7 bar (25 psi) check except actuator cavitation is a concern.
  • In considering the leakage test of the master-slave circuit and the integral cylinder and valve, there is no positive sealing between port 2 and port 3.
  • 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.
  • 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.
  • Winner guarantees that all products performance a 100% functional test before shipment.