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A screw-in, cartridge-style, pilot-operated, spool-type, hydraulic pressure reducing/relieving valve with internal pilot and internal spring chamber drain, designed to act as a pressure-regulating device in secondary circuits.
In its steady state, the PR12-36 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 spool shifts to restrict input flow from port ➁, thereby regulating pressure at ➀. In this mode, the valve will also relieve ➀ to ➂Flow Path: Reducing: ➁ to ➀; Relieving: ➀ to ➂
• Adjustments cannot be backed out of the valve.
• Adjustments prohibit springs from going solid.
• Optional spring ranges to 207 bar (3000 psi).
Operating Pressure: Ports ➀ and ➁: 276 bar (4000 psi)
Maximum Tank Pressure: Port ➂: 69 bar (1000 psi)
Flow: See Performance Chart
Standard Spring Ranges (Reducing Function):Code 04: 6.9 to 27.6 bar (100 to 400 psi);Code 30: 20.7 to 207 bar (300 to 3000 psi)
Maximum Pilot Flow and Leakage: 0.49 lpm (0.13 gpm) with max. control current and with inlet pressure at 276 bar (4000 psi) at regulated flow of 3.8 lpm (1 gpm).
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: VC12-3; See page 9.110.1
Cavity Tool: CT12-3XX; See page 8.600.1
Seal Kit: SK12-3X-BM; See page 8.650.1207/3000172/2500138/2000103/150069/1000381000301504381076201143015140FLOW RATE lpm/gpmPRESSURE bar/psiTypical Pressure vs. Flow at Maximun Pressure Settingfor Different Spring Ranges32 cSt/150 sus oil at 40CRelievingBody and Line:4.5 bar @189.3 lpm(65 psi @ 50 gpm)ReducingBody and Line:4.8 bar @189.3 lpm(70 psi @ 50 gpm)35/500189507620114301514018950240/3500Patent Pending
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