Valves - Directional Controls - Check Valve

CV08-20

CHECK VALVE

Overview

Description

The CV08-20 is a screw-in, cartridge style, hydraulic check valve for use as a blocking or load-holding device.

Operation

The cartridge valve allows flow from port 1 to 2, while normally blocking flow in the opposite direction. The cartridge valve has a fully guided check which is spring biased closed until sufficient pressure is applied at port 1 to open to port 2.

Features

  • Hardened seat for long life and low leakage.
  • Optional bias springs for back-pressure application flexibility.
  • Fully guided check assembly.
  • Compact size.
  • Fast closing and seating.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Proof pressure:
  • 350 bar (5075 psi)
Burst pressure:
  • 1034 bar (15000 psi)
Flow Ratings
Flow rating:
  • See graph
Maximum internal leakage:
  • 0.10 ml/min (2 drops/min) At 241 bar (3500 psi)
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 fluorocarbon seals
  • -54 to 107 °C (-65 to 225 °F) With urethane and polyurethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 90 °C (-40 to 194 °F)
Other Ratings
Corrosion protection:
  • 960 hour salt spray per ASTM b117 GCV08-20 only
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
Unit weight:
  • 0.05 kg (0.12 lb)
Internal wetted surface area:
  • 60 cm² (9.3 in²)
CV08-20_Perf1(2022-02-24) CV08-20_Perf2(2022-02-24) CV08-20_Perf3(2022-02-24) CV08-20_Perf4(2022-02-24)
CV08-20_Dim(2022-02-24)
Cavity:
Cartridge installation torque:
  • 25.8 to 28.5 N-m (19 to 21 ft-lb)
Maximum allowable torque:
  • 54 N-m (40 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK08-2N-T Buna N
  • SK08-2V-T Fluorocarbon
  • SK08-2HV-T Fluorocarbon
  • SK08-2P-T Polyurethane
  • SK08-2U-O Urethane
CV08-20_Order2(2022-02-24)

Model Options

CV08-20-H-J-R
H Line Body
CODE
DESCRIPTION
0
No Body
4T
Aluminum SAE 4
6T
Aluminum SAE 6
8T
Aluminum SAE 8
6TD
Ductile Iron SAE 6
8TD
Ductile Iron SAE 8
2B
Aluminum BSPP 1/4" (2)
3B
Aluminum BSPP 3/8" (3)
3BD
Ductile Iron BSPP 3/8" (3)
J Seal
CODE
DESCRIPTION
N
Buna-N
V
Fluorocarbon
P
Polyurethane
U
PPDI Urethane
R Spring
CODE
DESCRIPTION
4
4 psi Bias Spring
10
10 psi Bias Spring
25
25 psi Bias Spring
40
40 psi Bias Spring
50
50 psi Bias Spring
60
60 psi Bias Spring
80
80 psi Bias Spring
100
100 psi Bias Spring
150
150 psi Bias Spring
200
200 psi Bias Spring
270
270 psi Bias Spring
M25
25 bar Bias Spring