Valves - Directional Controls - Check Valve

CV12-21

CHECK VALVE

Overview

Description

The CV12-21 is a screw-in, cartridge style, hydraulic check valve for use as a blocking or load-holding device.

Operation

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

Features

  • Hardened seat for long life and low leakage. Optional bias springs for back-pressure application flexibility. Low check mass for anti-cavitation applications. Cost-effective cavity.
Pressure Ratings
Pressure rating:
  • 240 bar (3500 psi)
Flow Ratings
Maximum internal leakage:
  • 5 drops/min At 240 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 seals
Storage temperature:
  • -40 to 70 °C (-40 to 160 °F)
Ambient temperature:
  • -40 to 90 °C (-40 to 194 °F)
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:
  • 0.16 kg (0.37 lb)
Internal wetted surface area:
  • 134 cm² (20.7 in²)
CV12-21_Perf_Chrt(2022-02-24)
CV12-21_Dim_Dwg(2022-02-24)
Cavity:
Cartridge installation torque:
  • 44.7 to 50.2 N-m (33 to 37 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK12-2X-B X = seal option
CV12-21_Order(2022-02-24)

Model Options

CV12-21-H-J-R
H Line Body
CODE
DESCRIPTION
0
No Body
10T
Aluminum SAE 10
12T
Aluminum SAE 12
16T
Aluminum SAE 16
12TD
Ductile Iron SAE 12
16TD
Ductile Iron SAE 16
8B
Aluminum BSPP 1" (8)
8BD
Ductile Iron BSPP 1" (8)
J Seal
CODE
DESCRIPTION
N
Buna-N
V
Fluorocarbon
P
Polyurethane
U
PPDI Urethane
R Spring
CODE
DESCRIPTION
6
6 psi Bias Spring
26
26 psi Bias Spring
56
56 psi Bias Spring