Valves - Pressure Controls - Pressure Reducing Valve - Direct Acting

PRES50-30

PRESSURE REDUCING / RELIEVING CARTRIDGE VALVE

Overview

Description

PRES50-30 is a screw in, cartridge style, direct-acting, spool-type, hydraulic pressure reducing/relieving valve designed to act as a pressure regulating device for secondary circuits. It is intended for use in stable input flow circuits

Operation

In its steady state, the PRES50-30 allows flow to pass bidirectionally from port 3 to port 2 with the spring chamber constantly drained at port 1. Upon attainment of a predetermined pressure at port 2, the cartridge shifts to block flow at port 3, thereby regulating pressure at port 2. In this mode, the valve will also relieve port 2 to port 1 at a variable value over the set reducing pressure

note: tank port pressure is additive to valve setting at ratio of 1:1

Features

  • High Pressure steel adapter on inlet port 3 withstands up to 345 bar (5000 psi).
  • Hardened spool and cage for long life.

Ratings

Pressure Ratings
Pressure rating
344.7 bar (5000 psi) Port 3
137.9 bar (2000 psi) Port 2
68.9 bar (1000 psi) Port 1
Proof pressure
551.6 bar (8000 psi)
Burst pressure
1379 bar (20000 psi)
Regulated pressure range
31 to 55.2 bar (450 to 800 psi) At 0.95 lpm (0.25 gpm)
Flow Ratings
Flow rating
11.4 lpm (3 gpm)
Maximum internal leakage
131 ml/min (8 in³/min) To port 1
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 viton seals
-54 to 107 °C (-65 to 225 °F) With polyurethane 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
18/16/13 per ISO 4406

Properties

Cartridge weight
0.22 kg (0.49 lb)
Internal wetted surface area
158 cm² (24.5 in²)

Performance

PRES50-30_RedRel_Flow-Pressure PRS50-30_Flow-Pressure

Dimensions

PRES50-30_Dim

Materials

Materials

Cartridge: Weight: 0.22 kg (0.49 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; O-rings standard.

Standard Ported Body: Weight: 0.34 kg (0.75 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.

Installation Specifications

Cavity
VC98-3
Cartridge installation torque
67.8 to 74.6 N-m (50 to 55 ft-lb)
31.2 to 36.6 N-m (23 to 27 ft-lb) Torque at port 3:
Orientation restriction
None

Accessories

Seal kit
SK10-2X-O_SPL X=seal option

Order code

POSITION
CODE
DESCRIPTION
PRES50-30-H-J-R/S
H
Line Body
H
0
No Body
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
R
Spring
R
08
31 to 55.2 bar (450 to 800 psi) Spring Range
S
Setting
S
MXXX
Spring Setting in XXX bar
S
XX
Spring Setting in XX psi (x 100)
PRES50-30_Order