IRV10-26 Pilot-Operated Spool Relief Valve

IRV10-26 pilot operated unloading valve

The IRV10-26 Relief Valve Pilot-Operated Spool is a high-performance valve designed to protect hydraulic systems from excessive pressure. It features a pilot-operated spool mechanism that enables precise pressure regulation and rapid response to pressure changes. Its robust construction and reliable operation make it an essential component for maintaining system safety and preventing damage.

Specifications of IRV10-26 Relief Valve Pilot-Operated Spool

Product Model	IRV10-26 RELIEF VALVE PILOT-OPERATED SPOOL
Operating Pressure	420 bar (6000 psi)
Flow	The Performance Chart illustrates the flow handling capacity of different springs at maximum setting. Pressure rise will vary with setting due to spring and flow forces. Consult Inno for specific pressure-flow characteristic values
Internal Leakage	115 ml/min. (7 cu. in./minute) max. to 85% of nominal setting
Crack Pressure Defined	Gauge bar (psi) evident at 7.6 lpm (2.0 gpm) attained
Standard Spring Ranges	35 to 140 bar (500 to 2000 psi) ;70 to 280 bar (1000 to 4000 psi) ;140 to 420 bar (2000 to 6000 psi)
Temperature	-40°℃～100°C
Fluids	Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 ssu).Installation: No restrictions
Cavity	IVC12-2,See page 302

Material

Cartridge	Weight: 0.20 kg. (0.44 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces.
Seal	D type seal rings.Anodized aluminum knobs.
Standard Ported Body	Weight: 0.16 kg. (0.35 lbs.); Anodized high-strength 6061 T6 aluminum alloy, rated to 240 bar (3500 psi).

Ductile iron and steel bodies available; dimensions may differ. Consult Inno.

Features of IRV10-26 Relief Valve Pilot-Operated Spool

Operation Symbol of IRV10-26 Relief Valve Pilot-Operated Spool

The IRV10-26 blocks flow from ① to ②until 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 a fast response to load pressure changes in hydraulic circuits.

NOTE: The IRV10-26 cannot be used in crossover relief applications.

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