Valves - Directional Controls - Check Valve

CV50-20

CHECK VALVE

Overview

Description

The CV50-20 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.
  • Industry-common cavity.
Pressure Ratings
Pressure rating:
  • 345 bar (5000 psi)
Flow Ratings
Flow rating:
  • 75.7 lpm (20 gpm)
Maximum internal leakage:
  • 0.10 ml/min (2 drops/min) At 345 bar (5000 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 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 70 °C (-40 to 160 °F)
Fluids:
  • Mineral based or synthetic hydraulic fluid with lubricating properties
Fluid viscosity range:
  • 7.4 to 420 cSt
Maximum operating contamination level:
  • 18/16/13 per ISO 4406
Unit weight:
  • 0.08 kg (0.18 lb) CV50-20
  • 0.12 kg (0.27 lb) CV50-20T
Internal wetted surface area:
  • 74 cm² (11.5 in²) Cv5020
  • 97 cm² (15.1 in²) Cv5020t
CV10-20_Perf_Chrt
CV50-20_Dim_Dwg

Materials

Cartridge: Weight: 0.08 kg (0.17 lb); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and back-ups standard.

Standard Ported Body: Weight: 0.43 kg (0.95 lb); Ductile iron (code 'D') rated to 345 bar (5000 psi);

Cavity:
Cartridge installation torque:
  • 32.6 to 35.4 N-m (24 to 26 ft-lb)
Maximum allowable torque:
  • 67.8 N-m (50 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK10-2N-T Buna N
  • SK10-2V-T Fluorocarbon
  • SK10-2HV-T Fluorocarbon
  • SK10-2P-T Polyurethane
  • SK10-2U-0 Urethane
CV50-20_Order
POSITION
CODE
DESCRIPTION
CV50-20C-H-J-R
C
Tall Cap
C
BLANK
Standard Cap
C
T
Tall Cap
H
Line Body
H
0
No Body
H
6T
Aluminum SAE 6
H
8T
Aluminum SAE 8
H
6TD
Ductile Iron SAE 6
H
8TD
Ductile Iron SAE 8
H
2B
Aluminum BSPP 1/4" (2)
H
3B
Aluminum BSPP 3/8" (3)
H
4B
Aluminum BSPP 1/2" (4)
H
4BD
Ductile Iron BSPP 1/2" (4)
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
R
Spring
R
2
2 psi Bias Spring
R
5
5 psi Bias Spring
R
15
15 psi Bias Spring
R
30
30 psi Bias Spring
R
70
70 psi Bias Spring
R
100
100 psi Bias Spring
R
300
300 psi Bias Spring