DESCRIPTION

A screw-in, cartridge-style, pilot-operated (two-stage), spooltype hydraulic relief valve, intended for use as a pressure limiting device in demanding hydraulic circuits which require fast response and low hysteresis.

OPERATION

The DARV10-26 ，blocks flow from ① to ② until sufficient pressure is present at ① to force the piloting relief off its seat, allowing the main (second stage) spool to shift, opening ① to ② . 

The cartridge offers smooth transition in response to load changes in demanding hydraulic circuits. 

NOTE：DARV10-26 cannot be used in crossover relief applications.

FEATURES

Adjustments cannot be backed out of the valve. 

Adjustments prohibit springs from going solid. 

Hardened spool and cage for long life. 

Optional spring ranges to 210 bar（3000 psi）. 

Fast, smooth response to pressure surges. 

Industry common cavity.

MATERIALS

Cartridge: Weight:0.25kg（0.55 lbs）； 

Steel with hardened work surfaces. 

Zinc-plated exposed surfaces. 

Buna N O-rings and polyester elastomer back-ups standard. 

Anodized aluminum knobs. 

Optional polyurethane seals with Fluorocarbon back-up recommended for pressures over 240 bar (3500 psi). 

BODY:Weight:0.16 kg（0.35lbs）； 

Anodized highstrength 

6061 T6 aluminum alloy, rated to 240 bar（3500 psi）； 

Ductile iron bodies available; dimensions may differ.

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