| Pressure Control Valve
Relief Valve, Pilot Operated, Spool
QRV52-26 = Pilot Relief =
A screw-in, cartridge-style, pilot-operated, two-stage, spool-type hydraulic relief valve, intended for use as a pressure limiting device in demanding hydraulic circuits which require fast response and low hysteresis at high operating pressures.
The QRV52-26 blocks flow from ① to ② until sufficient pressure is present at ① to force the pilot relief off its seat, allowing the main stage to shift, opening ① to ②. The cartridge offers smooth transition in response to load changes in demanding hydraulic circuits.
Note: The QRV52-26 cannot be used in cross-over relief applications.
|Proof Pressure (bar)||Flow||Internal Leakage
|User Temperature(0C)||Operation Voltage|
|240||350||150 lpm/40 gpm||0.15 cc/min
(First remove inside air)
|-400~ 120||± 15% voltage|
．100% full inspection for all products.
．Standard product life tested for million cycles.
．1000-hour salt-spray anti-corrosion protection tested.
．Raw material, oil, electroplating, etc. in manufacturing process with RoHS compliance.
．All coils tested by third party notarization inspection & CE certified.
．Heat Treatment on spool, poppet, cage for long life and low leakage.
．Coil rated for continuous duty
．Customized coil voltages and terminations
．Cartridges are customized.
．Manual override option.
．Multi industrial applications.
．Coil mold design with sufficient demands.
Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 350 bar (5075 psi)
Flow: 150 lpm (40 gpm)
Internal Leakage: 0.15 cc/minute
User Temperature: -40° to 120°C (-40° to 248°F) with Buna seals;
User Temperature: -26° to 204°C (-15° to 400°F) with Fluorocarbon seals
Filtration: With S: 100 mesh (149 micron)
Operation Voltage: ±15% voltage
Cavity: Q12-2; See page Q12-2