Valves - Directional Controls - Check Valve - Pilot Operated

DCV08

DOUBLE PILOT CHECK VALVE

Overview

Description

The DCV08 is a double pilot operated, hydraulic check valve for use in blocking or load holding circuite.

Operation

The valve allows flow from "V" ports to "C" ports, while normally blocking flow in the opposite direction. Flow will be allowed from "C" to "V" when pressure is applied to the opposite side "V" port. The valve has 4:1 pilot ratio, so at least 25% of the load pressure held at either "C" port is required at the opposite "V" port to open the flow passage.

Features

  • Hardened seat for long life and low leakage.
  • Optional sealed piston.
  • Optional spring ranges.
  • Low pressure drop.
  • Check section is serviceable as a cartridge.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Pilot ratio:
  • 4:1
Check valve spring value:
  • 1.7 bar (25 psi) Standard for seal codes "N" and "V"
  • 6.9 bar (100 psi) Standard for seal codes "NS" and "VS" (sealed options)
Temperature Ratings
Operating fluid temperature:
  • -40 to 120 °C (-40 to 248 °F)
Flow Ratings
Maximum internal leakage:
  • 0.25 ml/min (5 drops/min) C to V at 241 bar (3500 psi)
  • 328 ml/min (20 in³/min) V1 to v2 without sealed piston at 241 bar (3500 psi)
Flow performance:
  • See graph
Materials:
  • Body - anodized high strength aluminum alloy. Cartridges - steel with hardened work surfaces and zinc plated exposed surfaces. Pilot piston - hardened steel
Unit weight:
  • 0.57 kg (1.25 lb)
DCV08_Perf(2022-02-24)
DCV08_Dim(2022-02-24)
Seal kit:
  • SK08-2N-T Buna
  • SK08-2V-T Viton
DCV08_Order2(2022-02-24)
POSITION
CODE
DESCRIPTION
DCV08-H-J-R
H
Porting
H
2P
1/4-18 NPTF
H
3P
3/8-18 NPTF
H
2B
1/4 BSP
H
3B
3/8 BSP
H
6T
SAE 6
H
8T
SAE 8
J
Seal
J
N
Buna N
J
V
Viton
J
BS
Buna with sealed piston
J
VS
Viton with sealed piston
R
Spring
R
BLANK
25 psi (N and V)
R
BLANK
100 psi (NS and VS)
R
60
60 psi (N and V)
R
80
80 psi (N and V)
R
100
100 psi (N and V)
R
150
150 psi (NS and VS)
R
200
200 psi (NS and VS)
R
270
270 psi (NS and VS)