DARV10-23 Relief, Pilot-Operated Spool

DESCRIPTION

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.low leakage and low pressure overshoot.

OPERATION

The DARV10-23 blocks flow from 1 to 2 until sufficient pressure is present at 1 to force the piloting relief off its seat, allowing the main spool to shift, opening 1 to 2 .
NOTE：The DARV10-23may be used in cross-over relief applications, however, it is not recommended for use as in parallel cross-over relief or anti-cavitation applications.Consult factory for proper flow path connections.

FEATURES

● Adjustments cannot be backed out of the valve.
● Hardened spool and cage for long life.
● Fast, smooth response to pressure surges.
● Industry common cavity.

RATINGS

Operating Pressure:20.7 ～ 240 bar（300 ～ 3500 psi）
Flow:7.6 ～ 113.6 lpm（2 ～ 30 gpm）
Internal Leakage: 0.5 ml/minute (5 drops/minute) max. to 80% of nominal setting
Crack Pressure Defined:Setting Pressure Defined: bar (psi) evident at 7.6 lpm (2.0 gpm) attained
Reseat Pressure：Nominal 90% of crack pressure
Pressure Rise：0.15 bar/lpm （8 psi/gpm),at 240 bar (3500 psi)
Temperature:-54℃～ 135℃（-65 ～ 275° F）（with Buna N seals）
Fluids:Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 ssu)

Cavity: