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Valves - Pressure Controls - Pressure Reducing Valve - Piloted

PR12-36

PRESSURE REDUCING/ RELIEVING VALVE U.S. PATENT # 7,137,406

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Overview

Description

The PR12-36X is a spool type, pilot operated, hydraulic pressure reducing/relieving valve with internal pilot and internal spring chamber drain, designed to act as a pressure regulating device for secondary circuits.

Operation

In its steady state, the PR12-36X allows flow to pass bidirectionally from port 2 to port 1, with the spring chamber constantly drained at port 3. Upon attainment of a predetermined pressure at port 1, the spool shifts to restrict inlet flow from port 2, thereby regulating pressure at port 1. In this mode the valve will also relieve port 1 to port 3.

note: tank pressure is additive to regulated pressure.

Features

  • Adjustments cannot be backed out of the valve.
  • Adjustments prohibit springs from going solid.
  • Optional spring ranges to 207 bar (3000 psi).
Pressure Ratings
Pressure rating:
  • 241.3 bar (3500 psi) Port 1
  • 241.3 bar (3500 psi) Port 2
  • 103.4 bar (1500 psi) Port 3
Proof pressure:
  • 517.1 bar (7500 psi) At all ports
Burst pressure:
  • 1034 bar (15000 psi)
Flow Ratings
Flow rating:
  • 189.2 lpm (50 gpm)
Maximum pilot flow:
  • 0.170 lpm (0.045 gpm) With maximum adjustment setting and with inlet pressure of 241 bar (3500 psi)
Temperature Ratings
Operating fluid temperature:
  • -40 to 100 °C (-40 to 212 °F) With buna N seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 70 °C (-40 to 160 °F)
Other Ratings
Corrosion protection:
  • 960 hr salt spray per ASTM b117 (gpr12-36x)
Fluids:
  • Mineral based or synthetic with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406 All surfaces in contact with working fluid to meet jds-g169, 5.6 cleanliness level
  • 0.5 mm (0.02 in) Absolute maximum particle size. Packaging to maintain cleanliness level during shipping and handling
  • 1.1 mg Maximum allowable contaminant
Unit weight:
  • 0.41 kg (0.90 lb) PR12-36A
  • 0.43 kg (0.94 lb) PR12-36B
  • 0.45 kg (0.99 lb) Pr12-36c/l
  • 0.46 kg (1.01 lb) Pr12-36f/h
Internal wetted surface area:
  • 260 cm² (40.3 in²) Pr12-36a/b/c/l
  • 279 cm² (43.2 in²) Pr12-36f/h
PR12-36_perf-charts(2022-02-24) PR12-36_perf-chart(2022-02-24)
PR12-36_Dim(2022-02-24)
Cavity:
  • VC12-3
Cartridge installation torque:
  • 44.8 to 50.2 N-m (33 to 37 ft-lb)
H style plug torque:
  • 33.9 N-m (25 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK12-3X-BM X=seal options
Housings:
PR12-36_Order(2022-02-24)

Model Options

PR12-36DFG-H-J-R/S
D Rapid Response Option
CODE
DESCRIPTION
BLANK
Standard
R
Rapid Response
F Adjustment Option
CODE
DESCRIPTION
A
1/4" Hex Allen Head
B
1-1/2" Diameter Aluminum Knob with Aluminum Lock Knob
C
1/4" Hex Allen Head with Cover Cap
F
Factory Preset Non-Adjustable
H
Factory Preset Hidden Adjustment
L
1/4" Hex Allen Head with Cover Cap and Lockwire Holes
H Line Body
CODE
DESCRIPTION
0
No Body
8T
Aluminum SAE 8
10T
Aluminum SAE 10
12T
Aluminum SAE 12
12TD
Ductile Iron SAE 12
6B
Aluminum BSPP 3/4" (6)
J Seal
CODE
DESCRIPTION
N
Buna-N
V
Fluorocarbon
P
Polyurethane
U
PPDI Urethane
R Spring
CODE
DESCRIPTION
04
6.9 to 27.6 bar (100 to 400 psi) Spring Range
15
10.3 to 103 bar (150 to 1500 psi) Spring Range
30
20.7 to 207 bar (300 to 3000 psi) Spring Range
S Setting
CODE
DESCRIPTION
MXXX
Spring Setting in XXX bar
XX
Spring Setting in XX psi (x 100)
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