Valves - Pressure Controls - Pressure Reducing Valve - Direct Acting

PR58-38

PRESSURE REDUCING/RELIEVING CARTRIDGE VALVE

Overview

Description

The pr58-38xxx is a screw in, cartridge style, direct acting, spool type, hydraulic pressure reducing/relieving valve with internal spring chamber drain, and spool damping chamber

Operation

It is designed to act as a pressure regulating device for secondary circuits. In its steady state, the pr58-38xxx 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 cartridge shifts to block flow at port 2, thereby regulating pressure at port 1. In this mode, the valve will also relieve port 1 to port 3.. Port 2 may be protected by a 60 x 60 mesh screen

Features

  • Adjustments cannot be backed out of the valve.
  • Adjustments prohibit springs from going solid.
  • Optional spring ranges to 248 bar (4200 psi)
  • Optional 233 micron screen.
  • Hardened spool and cage for long life.
  • Compact, industry-common size.

Ratings

Pressure Ratings
Pressure rating
344.7 bar (5000 psi)
Proof pressure
379.2 bar (5500 psi)
Burst pressure
896.3 bar (13000 psi)
Maximum tank port pressure
68.9 bar (1000 psi)
Flow Ratings
Flow rating
18.9 lpm (5 gpm)
Temperature Ratings
Maximum operating fluid temperature
-40 to 100 °C (-40 to 212 °F) With buna N seals
-26 to 204 °C (-15 to 400 °F) With fluorocarbon seals
-54 to 107 °C (-65 to 225 °F) With polyurethane and urethane seals
Storage temperature
-40 to 70 °C (-40 to 160 °F)
Ambient temperature
-40 to 70 °C (-40 to 160 °F)

Operating Parameters

Fluids
Mineral based or synthetic with lubricating properties
Fluid viscosity range
7.4 to 420 cSt
Maximum operating contamination level
20/18/14 per ISO 4406 (tank port pressure is additive to pressure setting at ratio of 1:1)

Properties

Cartridge weight
0.23 kg (0.52 lb) A
0.26 kg (0.57 lb) B
0.28 kg (0.61 lb) C l
0.22 kg (0.49 lb) F h
Internal wetted surface area
141 cm² (21.9 in²) A b c l
166 cm² (25.7 in²) F h

Performance

PR58-38_Flow-Pressure

Dimensions

PR58-38_Dim

Materials

Materials

Cartridge: Weight: 0.23 kg (0.52 lb) with A option; 0.26 kg (0.57 lb) with B option; 0.28 kg (0.61 lb) with C and L options; 0.22 kg (0.49 lb) with F and H options. Steel with hardened work surfaces. Zinc-plated exposed surfaces. Buna N O-rings and polyester elastomer back-ups standard. Anodized aluminum knob.

Standard Ported Body: Ductile iron (code D) bodies are required for operation over 207 bar (3000 psi). Anodized high-strength aluminum alloy, rated to 207 bar (3000 psi) also available, dimensions may differ.

Adjustment Option Details: See adjustment options

Note: Orifice Disc should not be used with this valve

Installation Specifications

Cavity
VC08-3
Cartridge installation torque
32.5 to 35.3 N-m (24 to 26 ft-lb)
47.5 N-m (35 ft-lb) Maximum
Plug torque
47.5 N-m (25 ft-lb)
Orientation restriction
None

Accessories

Seal kit
SK08-3X-BM X = seal option
SK08-3U-OO X = seal option

Order code

POSITION
CODE
DESCRIPTION
PR58-38FG-H-J-R/S
D
Rapid Response Option
D
BLANK
Standard
D
R
Rapid Response
F
Adjustment Option
F
A
1/4" Hex Allen Head
F
B
1-1/2" Diameter Aluminum Knob with Aluminum Lock Knob
F
C
1/4" Hex Allen Head with Cover Cap
F
F
Factory Preset Non-Adjustable
F
H
Factory Preset Hidden Adjustment
F
L
1/4" Hex Allen Head with Cover Cap and Lockwire Holes
G
Screen
G
BLANK
NONE
G
S
60 Mesh Screen
H
Line Body
H
0
No Body
H
4T
Aluminum SAE 4
H
6T
Aluminum SAE 6
H
6TD
Ductile Iron SAE 6
H
8TD
Ductile Iron SAE 8
H
3B
Aluminum BSPP 3/8" (3)
H
3BD
Ductile Iron BSPP 3/8" (3)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
05
10.3 to 37.9 bar (150 to 550 psi) Spring Range
R
20
34.5 to 141.3 bar (500 to 2050 psi) Spring Range
R
32
55.2 to 227.5 bar (800 to 3300 psi) Spring Range
R
42
227.6 to 289.6 bar (3301 to 4200 psi) Spring Range
S
Setting
S
MXXX
Spring Setting in XXX bar
S
XX
Spring Setting in XX psi (x 100)
PR58-38_Order