Tryckreduceringsventil SUN T-21A

Pilot-operated, pressure reducing/relieving valve with drain to port 4.

Externally drained, pilot-operated pressure reducing/relieving valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). Draining the pilot section at port 4 makes these valves insensitive to pressure at tank (port 3) and provides a means for remote control by pilot or 2-way valves.

  • Maximum pressure at port 3 should be limited to 210 Bar.
  • Pilot operated valves exhibit very low dead-band transition between reducing and relieving modes.
  • Recommended maximum inlet pressure is determined by the adjustment range. The PVDA-LAN valve is tested with a 210 Bar maximum differential between inlet and reduced pressure.
  • Pressure at port 4 should not exceed 350 Bar.
  • Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis.
  • Pressure on the drain (port 4) is directly additive to the valve setting at a 1:1 ratio and should not exceed 350 bar.
  • Pilot operated reducing, reducing/relieving valves by nature are not fast acting valves. For superior dynamic response, consider direct acting valves.
  • Full reverse flow from reduced pressure (port 1) to inlet (port 2) may cause the main spool to close. If reverse free flow is required in the circuit, consider adding a separate check valve to the circuit.
  • By controlling the pressure at the drain (port 4), the effective setting of the valve can be increased over the nominal valve setting.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.

Partnumber:
PVDA-LAN

Package size:
1 st

Min. order quantity is:
1 st
Cavity
T-21A

Flow Nominel
40 lpm

Forureningsgrad maks.
19/17/14 - ISO 4406

Materiale
Steel

Mærke navn
Sun Hydraulics

Olieviskositet anbefalet
2,8 - 380 cSt

Pakningsmateriale
NBR

Temperatur maks.
+110 °C

Temperatur min.
-30 °C

Tilspændingsmoment
41 - 47 Nm

Tryk T maks.
210 bar

Tryk maks.
350 bar

Trykindstilling maks.
210 bar

Trykindstilling min.
7 bar
Package size
1 st

Barcode
159471

Gross weight
Kg

Net weight
Kg

Country of origin
usa

Pilot-operated, pressure reducing/relieving valve with drain to port 4.

Externally drained, pilot-operated pressure reducing/relieving valves reduce a high primary pressure at the inlet (port 2) to a constant reduced pressure at port 1, with a full-flow relief function from port 1 to tank (port 3). Draining the pilot section at port 4 makes these valves insensitive to pressure at tank (port 3) and provides a means for remote control by pilot or 2-way valves.

  • Maximum pressure at port 3 should be limited to 210 Bar.
  • Pilot operated valves exhibit very low dead-band transition between reducing and relieving modes.
  • Recommended maximum inlet pressure is determined by the adjustment range. The PVDA-LAN valve is tested with a 210 Bar maximum differential between inlet and reduced pressure.
  • Pressure at port 4 should not exceed 350 Bar.
  • Pilot operated valves exhibit exceptionally flat pressure/flow characteristics, are very stable and have low hysteresis.
  • Pressure on the drain (port 4) is directly additive to the valve setting at a 1:1 ratio and should not exceed 350 bar.
  • Pilot operated reducing, reducing/relieving valves by nature are not fast acting valves. For superior dynamic response, consider direct acting valves.
  • Full reverse flow from reduced pressure (port 1) to inlet (port 2) may cause the main spool to close. If reverse free flow is required in the circuit, consider adding a separate check valve to the circuit.
  • By controlling the pressure at the drain (port 4), the effective setting of the valve can be increased over the nominal valve setting.
  • Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.