Sun Hydraulics offers many small solenoid and non-solenoid pilot valves that can be used to provide directional pilot control. Pilot controls that feature a T-8A cavity can also be directly installed into the hex end of many of Sun's pilot operated and ventable cartridges to provide integrated pilot control. Pilot offerings include:

  • 2-way and 3-way 5000 psi (350 bar) solenoid cartridges
  • Hydraulically operated 2-positon, 2-way and 2-position, 3-way pilot cartridges
  • Air piloted 2-position, 2-way and 2-position, 3-way pilot controls
  • Manually operated, 2-position, 2-way, intermittent pilot control
PCV-2P2WSDVPC.jpg

2-position 2-way, Spool Directional Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at 150 SUS = 10 drops/min. at 5000 psi
  • Switching frequency = 15000 cycles/hour
  • Cartridge can be installed directly into a cavity in some Sun pilot operated and ventable cartridges to provide electrically operated pilot control functions.
  • Proper installation of solenoid valves requires an extra deep socket to clear the solenoid tube.
  • Sockets are available from Snap On tools (P/N SIML280) or Sun Hydraulics (P/N 998-100-006).
PCV-HO2P2WSDVPC.jpg

Hydraulically Operated, 2-position 2-way, Spool Directional Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at 150 SUS = 10 drops/min. at 5000 psi
  • Minimum pilot pressure to operate = 200 psi
  • All ports will accept 5000 psi including the pilot control port.
  • The preferred flow path through the valve is port 2 to port 1.
  • The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required torque value.
PCV-AO2P2WSDVPC.jpg

Air-operated, 2-position 2-way, Spool Directional Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at 150 SUS = 10 drops/min. at 5000 psi
  • Maximum pilot pressure = 70 psi
  • Minimum pilot pressure to operate = 20 psi + port 1 pressure/100 psi
  • All ports will accept 5000 psi with the exception of the pilot port which accepts 500 psi maximum.
  • The preferred flow path through the valve is port 2 to port 1.
  • The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required torque value.
PCV-MO2P2WSDVPC.jpg

Manually Operated, 2-position 2-way, Spool Directional Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at 150 SUS = 10 drops/min. at 5000 psi
  • The preferred flow path through the valve is port 2 to port 1.
  • The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required torque value.
PCV-2P3WSDVPC.jpg

2-position 3-way, Spool Directional Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at 150 SUS = 10 drops/min. at 5000 psi
  • Switching frequency = 15000 cycles/hour
  • Proper installation of solenoid valves requires an extra deep socket to clear the solenoid tube.
  • Sockets are available from Snap On tools (P/N SIML280) or Sun Hydraulics (P/N 998-100-006).
PCV-HO2P3WSDVPC.jpg

Hydraulically Operated, 2-position 3-way, Spool Directional Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at 150 SUS = 10 drops/min. at 5000 psi
  • Minimum pilot pressure to operate = 200 psi
  • All ports will accept 5000 psi including the pilot control port.
PCV-AO2P3WSDVPC.jpg

Air-operated, 2-position 3-way, Spool Directional Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at 150 SUS = 10 drops/min. at 5000 psi.
  • Maximum pilot pressure = 70 psi
  • Minimum pilot pressure to operate = 20 psi + port 1 pressure/100 psi
  • All ports will accept 5000 psi with the exception of the pilot port which accepts 500 psi maximum.
PCV-AO2P3WSDVPC.jpg

Manually Operated, 2-position 3-way, Spool Directional Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at 150 SUS = 10 drops/min. at 5000 psi
  • All ports will accept 5000 psi.
PCV-DAAPR.jpg

Direct Acting, Adjustable Pilot Relief

  • Maximum operating pressure = 5000 psi
  • Maximum leakage = 5 drops/min. at reseat (reseat = 85% of cracking pressure).
  • Ports 1 and 2 may be pressured to 5000 psi.
  • Back pressure at port 2 (outlet) is directly additive to the pressure setting at port 1 (inlet).
  • The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required torque value.
PCV-ACDAPR.jpg

Air-controlled, Directing Acting Pilot Relief

  • Maximum operating pressure = 5000 psi
  • Maximum leakage = 5 drops/min. at 5000 psi
  • Maximum pilot pressure = 150 psi
  • Ports 1 and 2 may be pressured to 5000 psi.
  • Back pressure at port 2 has no effect on the valve setting.
  • The main stage valve should first be installed to the correct torque value followed by the T-8A pilot control section into the main stage valve to its required torque value.
PCV-FANVPC.jpg

Fully Adjustable Needle Valve - Pilot Capacity

  • Maximum operating pressure = 5000 psi
  • Maximum leakage at shutoff = less than 5 drops/min. at 5000 psi
  • Effective orifice size = 0.035 in.
  • Number of counterclockwise turns fully closed to fully open = 3
  • Ports 1 and 2 may be pressured to 5000 psi.
PCV-EPPR.jpg

Electro-proportional Pilot Relief

  • Maximum operating pressure = 5000 psi
  • Maximum leakage = 1.5 inĀ³/min at reseat
  • Back pressure on the tank port (port 2) is directly additive at a 1:1 ratio to valve setting
  • Reseat exceeds 85% of cracking pressure.
  • Hysteresis with dither <4%
  • Hysteresis with DC input <8%
  • Linearity with dither <2%
  • For optimum performance, an amplifier with current sensing and adjustable dither should be used.
  • Dither should be adjustable between 100 - 250 Hz.