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IRV10-26 Pilot-Operated Spool Relief Valve

Wuhu Inno Hydraulic Technology Co.,Ltd

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-ope...

Energy Management & Monitoring Wuhu Inno Hydraulic Technology Co.,Ltd 24 Dec 2025 ( )

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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

1. Adjustments cannot be backed out of the valve.

2. Adjustments prohibit springs from going solid.

3. Hardened spool and cage for long life.

4. Optional spring ranges to 210 bar (3000 psi).

5. Fast, smooth response to pressure surges.

6. Industry common cavity.

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.

Now the price of power operated relief valve  is reasonable, anything you need, please contact us.

As one of cartridge valve manufacturers , we will do our best to meet all the needs of customers.

Technical Specifications

Item Specifications Remarks
Update Date Wuhu Inno Hydraulic Technology Co.,Ltd 2025
Lead time within 30 days Can be expedited
Material See product manual Request Inspection Report
Application Applicable to multiple industries Complies with standards
Keywords electro proportional valve

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