Valves - Pressure Controls - Sequence Valves - Internal Pilot

PS08-30

SEQUENCE VALVE

Overview

Description

PS08-30 is a direct-acting, spool-type, hydraulic sequence valve with internal pilot and spring chamber drain, designed to direct oil to a secondary circuit once a predetermined pressure level is attained in the primary circuit

Operation

In its steady state, the PS08-30 blocks flow at port 1 while allowing flow to pass from port 2 to port 3. On attainment of a predetermined pressure at port 1, the cartridge shifts to open at port 1 to port 2

Features

  • Adjustments cannot be backed out of the valve.
  • Adjustments prohibit springs from going solid.
  • Optional spring ranges to 165.5 bar (2400 psi).
  • Hardened spool and cage for long life.
  • Compact, industry-common size.

Ratings

Pressure Ratings
Pressure rating:
  • 241.3 bar (3500 psi) At all ports
Proof pressure:
  • 482.6 bar (7000 psi) At all ports
Burst pressure:
  • 896.3 bar (13000 psi)
Flow Ratings
Flow rating:
  • 22.7 lpm (6 gpm)
Maximum internal leakage:
  • 82 ml/min (5 in³/min) Max at nominal setting
Temperature Ratings
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

Unit weight:
  • 0.24 kg (0.53 lb) PS08-30A
  • 0.23 kg (0.51 lb) PS08-30F PS08-30H
  • 0.26 kg (0.58 lb) PS08-30B
  • 0.29 kg (0.63 lb) PS08-30C
Internal wetted surface area:
  • 128 cm² (19.9 in²) PS08-30A PS08-30B PS08-30C
  • 143 cm² (22.1 in²) PS08-30F PS08-30H

Performance

PS08-30_Flow-Press2 PS08-30_Flow-Press1

Dimensions

PS08-30_Dim

Materials

Materials

Cartridge: Weight: 0.25 kg (0.55 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and back-ups standard. Anodized aluminum knobs.

Standard Ported Body: Weight: 0.27 kg (0.60 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.

Adjustment Option Details: See adjustment options

Installation Specifications

Cavity:
Cartridge installation torque:
  • 25.8 to 28.6 N-m (19 to 21 ft-lb)
Orientation restriction:
  • None

Accessories

Seal kit:
  • SK08-3X-BB X=seal option

Order Code

POSITION
CODE
DESCRIPTION
PS08-30F-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
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
03
3.4 to 20.7 bar (50 to 300 psi) Spring Range
R
06
8.3 to 41.4 bar (120 to 600 psi) Spring Range
R
13
13.8 to 89.6 bar (200 to 1300 psi) Spring Range
R
24
30 to 165.5 bar (450 to 2400 psi) Spring Range
S
Setting
S
MXXX
Spring Setting in XXX bar
S
XX
Spring Setting in XX psi (x 100)
PS08-30_Order