Valves - Pressure Controls - Sequence Valves - External Pilot

PS50-40

SEQUENCE VALVE

Overview

Description

The PS50-40X is a spool type, direct acting, adjustable, external pilot hydraulic sequence valve with externally vented spring chamber

Operation

The PS50-40X blocks flow between ports 2 and 3 bidirectionally. The spring chamber is constantly vented at port 4. On attainment of the valve pressure setting at port 1, the spool shifts to open ports 2 and port 3 bidirectionally. Pressure at port 4 is additive to the spring setting at a 1:1 ratio

Features

  • Adjustments cannot be backed out of the valve.
  • Adjustments prohibit springs from going solid.
  • Optional spring ranges to 241 bar (3500 psi).
  • Hardened precision spool and cage for long life.
  • Industry-common size.

Ratings

Pressure Ratings
Pressure rating:
  • 413.7 bar (6000 psi) Port 1
  • 344.7 bar (5000 psi) Ports 2, 3
  • 68.9 bar (1000 psi) Port 4
Proof pressure:
  • 482.6 bar (7000 psi)
Burst pressure:
  • 965.3 bar (14000 psi)
Flow Ratings
Flow rating:
  • 37.8 lpm (10 gpm)
Maximum internal leakage:
  • 164 ml/min (10 in³/min) Max to 85% of pressure setting
Temperature Ratings
Operating fluid temperature:
  • -54 to 107 °C (-65 to 225 °F) With polyurethane seals
  • -54 to 107 °C (-65 to 225 °F) With urethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 90 °C (-40 to 194 °F)

Operating Parameters

Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 20/18/14 per ISO 4406

Properties

Unit weight:
  • 0.29 kg (0.64 lb) PS50-40A
  • 0.31 kg (0.69 lb) PS50-40B
  • 0.34 kg (0.74 lb) PS50-40C
  • 0.28 kg (0.62 lb) PS50-40F
  • 0.28 kg (0.61 lb) PS50-40H
Internal wetted surface area:
  • 150 cm² (23.3 in²) A b c
  • 163 cm² (25.3 in²) F h

Performance

PS10-40_Flow-Pressure

Dimensions

PS10-40_Dim

Materials

Materials

Cartridge: Weight: 0.34 kg (0.70 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard. Anodized aluminum knobs and caps.

Standard Ported Body: Weight: 0.34 kg (0.70 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies required for operation over 207 bar (3000 psi); dimensions may differ.

Adjustment Option Details: See adjustment options

Installation Specifications

Cavity:
Plug torque:
  • 33.9 to 36.6 N-m (25 to 27 ft-lb)
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Orientation restriction:
  • None

Accessories

Seal kit:
  • SK10-4P-BMM Polyurethane
  • SK10-4U-OOO Urethane

Order Code

POSITION
CODE
DESCRIPTION
PS50-40F-H-J-R/S
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
H
Line Body
H
0
No Body
H
6T
Aluminum SAE 6
H
8T
Aluminum SAE 8
H
6TD
Ductile Iron SAE 6
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
R
Spring
R
03
6.9 to 20.7 bar (40 to 300 psi) Spring Range
R
04
2.8 to 27.6 bar (100 to 400 psi) Spring Range
R
35
20.7 to 241.3 bar (300 to 3500 psi) Spring Range
S
Setting
S
MXXX
Spring Setting in XXX bar
S
XX
Spring Setting in XX psi (x 100)
PS50-40_Order