カートリッジ弁
  • 技術データ
  • 製品説明
  • 性能曲線
  • 技術リファレンス
  • ファイル

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

Cavity 2A-3
Rate Flow 31.7 gpm 120 L/min
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
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 0.62 lbs (Z=L) 0.28 kg (Z=L)
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. 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. 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.
  • This valve is a non-restrictive balance valve with a rugged design, suitable for higher sudden impacts at load ports.
  • The pilot ratio affects the stability of the mechanical movement, the pilot ratio is low, and the pressure rises steadily.
  • 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 suggests when the maximum setting pressure is 280 bar, the load pressure has to be lower than 215 bar.)
  • Winner offers a variety of seal kit materials for different applications, see seals information under Technical Reference.
  • 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.
  • 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.
  • Air is purged from the pilot line through a slight leakage from port 2 to port 3 of the pilot piston. Sealed pilot option available for cross-port leakage-free circuits.
  • 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.
  • 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.
  • Single overcenter valves are suitable for applications such as aerial platforms and cranes where the load only moves in one direction. Dual overcenter valves are ideal for motor applications or for controlling cylinders that move in both directions, providing precise control over the load.
  • 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.