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.
| 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.
| 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. |
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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