SYMBOL:
 |
DESCRIPTION
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. Internal damping makes this valve particularly suitable for use in circuits with unstable input flows in demanding applications requiring enhanced stability.
OPERATION
In its steady state, the PR50-38 allows flow to pass bidirectionally from 2 to 1, with the spring chamber constantly drained at 3. On attainment of a pre-determined pressure at 1, the cartridge shifts to block flow at 2, thereby regulating pressure at 1. In this mode, the valve also will relieve 1 to 3 at a user-specified value over the set reducing pressure. Tank port pressure is additive to the pressure setting at a ratio of 1:1.
FEATURES
• Adjustments cannot be backed out of the valve.
• Adjustments prohibit springs from going solid.
• Optional spring ranges to 227.5 bar (3300 psi).
• Hardened spool and cage for long life.
• Industry-common size.
RATINGS:
Maximum Rated Pressure at Supply Port: 345 bar (5000 psi)
Regulated Pressure Range: 10.3–227.5 bar (150–3300 psi)
Flow: up to 72 lpm (19 gpm); see performance chart
Internal Leakage: to port 3: 82 cc/minute (5 cu. in/minute) maximum
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
-26° to 204°C (-15° to 400°F) with Fluorocarbon seals;
-54° to 107°C (-65°F to 225°F) with Polyurethane 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: VC10-3; See page 9.110_3w
Cavity Tool: CT10-3xx; See page 8.600.1
Seal Kit: SK10-3x-BM; See page 8.650.1 |
