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A screw-in, cartridge-style, direct-acting, spool-type, hydraulic pressure reducing/relieving valve with internal pilot and internal spring chamber drain, designed to act as a pressure-regulating device for secondary circuits. It is intended for use in stable input flow circuits.
In its steady state, the PR08-32 allows flow to pass bidirectionally from ➁ to ➀, with the spring chamber constantly drained at ➂On attainment of a pre-determined pressure at ➀, the cartridge shifts to block flow at ➁, thereby regulating pressure at ➀. In this mode, the valve also will relieve ➀ to ➂ at a variable value over the set reducing pressure.
Note: Direct-acting PR series valves may not be suitable for some static load
applications. Consult factory.
• Adjustments cannot be backed out of the valve.
• Adjustments prohibit springs from going solid.
• Optional spring ranges to 152 bar (2200 psi).
• Hardened spool and cage for long life.
• Industry common cavity.
• Compact size.
Operating Pressure: 240 bar (3500 psi)
Proof Pressure: 390 bar (5700 psi)
Flow: 11.4 lpm (3 gpm) max.
Internal Leakage ➁
to ➂
: 82 cc/minute (5 cu. in/minute) max. at 207 bar (3000 psi) to 90% of nominal setting
Standard Spring Ranges (Reducing Function):3.4 to 20.7 bar (50 to 300 psi);10.4 to 41.4 bar (150 to 600 psi);20.7 to 82.8 bar (300 to 1200 psi);34.5 to 151.7 bar (500 to 2200 psi)
Temperature: -40 to 120°C with standard Buna seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of 7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC08-3; See page 9.108.1
Cavity Tool: CT08-3XX; See page 8.600.1
Seal Kit: SK08-3X-BM; See page 8.650.1
