Sun press.reg./reliefvalve External pilot 40 l

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-LDN valves are tested with a 140 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.

Varenummer:
PVDA-LDN

Pakke str.:
1 st

Min. bestillingsenhed er:
1 st
Brand Name
Sun Hydraulics

Cavity
T-21A

Contamination level max.
19/17/14 - ISO 4406

Flow rate nominal LMin
40 lpm

Material
Steel

Oil viscocity recommended
2,8 - 380 cSt

Pressure T max.
210 bar

Pressure max.
350 bar

Pressure setting max.
55 bar

Pressure setting min.
1.7 bar

Sealing material
NBR

Temperature max.
+110 °C

Temperature min.
-30 °C

Torque tightening
41 - 47 Nm
Package size
1 st

Barcode
341236

Gross weight
0,21 Kg

Net weight
0,21 Kg

Country of origin

Intrastat code
84812010

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-LDN valves are tested with a 140 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.