Valves - Directional Controls - Check Valve

CV42-M20

CHECK VALVE

Overview

Description

The CV42-M20 is a screw-in, cartridge style, hydraulic check valve for use as a blocking or load-holding device. 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 poppet 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. ISO 7789 cavity.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Flow Ratings
Flow rating:
  • See chart
Maximum internal leakage:
  • 0.25 ml/min (5 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 polyurethane and urethane seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 70 °C (-40 to 160 °F)
Other Ratings
Corrosion protection:
  • 960 hr salt spray per ASTM b117 (gcv42-m20)
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:
  • 0.62 kg (1.36 lb)
Internal wetted surface area:
  • 297 cm² (46 in²)
CV42-M20_Perf_Chrt
CV42-M20_Dim_Dwg

Materials

Cartridge: Weight: 0.43 kg. (0.95 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard.

Standard Ported Body: Weight: 1.63 kg. (3.60 lbs.); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ.

Cavity:
Cartridge installation torque:
  • 149 to 176 N-m (110 to 130 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK42-M2N-T Buna N
  • SK42-M2V-T Fluorocarbon
  • SK42-M2P-T Polyurethane
  • SK42-M2U-O Urethane
CV42-M20_Order
POSITION
CODE
DESCRIPTION
CV42-M20-H-J-R
H
Line Body
H
0
No Body
H
20T
Aluminum SAE 20
H
20TD
Ductile Iron SAE 20
J
Seal
J
N
Buna-N
J
V
Fluorocarbon
J
P
Polyurethane
J
U
PPDI Urethane
R
Spring
R
5
5 psi Bias Spring
R
15
15 psi Bias Spring
R
30
30 psi Bias Spring
R
45
45 psi Bias Spring
R
60
60 psi Bias Spring
R
100
100 psi Bias Spring