Valves - Directional Controls - Check Valve - Pilot Operated

DC08-40

DUAL PILOT OPERATED CHECK VALVE

Overview

Description

The DC08-40 is a cartridge style, dual pilot operated check valve for use in blocking or load holding circuits with general purpose hydraulic fluids

Features

  • Hardened seat for long life and low leakage.
  • Low pressure drop.
  • Compact size.
Pressure Ratings
Pressure rating:
  • 241 bar (3500 psi)
Proof pressure:
  • 350 bar (5075 psi)
Burst pressure:
  • 966 bar (14000 psi)
Pilot ratio:
  • 3:1
Flow Ratings
Flow rating:
  • 19 lpm (5 gpm)
Maximum internal leakage:
  • 0.25 ml/min (5 drops/min) Max at 207 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)
Other Ratings
Corrosion protection:
  • 960 hr salt spray per ASTM b117 (gdc08-40)
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:
  • 0.07 kg (0.16 lb)
Internal wetted surface area:
  • 113 cm² (17.5 in²)
DC08-40_Perf_Chrt
DC08-40_Dim_Dwg

Materials

Cartridge: Weight: 0.13 kg. (0.28 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard.

Standard Ported Body : Weight: 0.18 kg. (0.40 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:
  • 25.8 to 28.6 N-m (19 to 21 ft-lb)
Maximum allowable torque:
  • 54.2 N-m (40 ft-lb)
Orientation restriction:
  • None
Seal kit:
  • SK08-4N-MMM Buna N
  • SK08-4V-MMM Fluorocarbon
  • SK08-4P-MMM Polyurethane
  • SK08-4U-OOO Urethane
DC08-40_Order
POSITION
CODE
DESCRIPTION
DC08-40-H-J-R
H
Line Body
H
0
No Body
H
6TD
Ductile Iron SAE 6
H
3B
Aluminum BSPP 3/8" (3)
H
3BD
Ductile Iron BSPP 3/8" (3)
J
Seal
J
N
Buna-N
J
NS
Buna-N with a Sealed Spool
J
V
Fluorocarbon
J
VS
Fluorocarbon with a Sealed Spool
J
P
Polyurethane
J
PS
Polyurethane with a Sealed Spool
J
U
PPDI Urethane
J
US
PPDI Urethane with a Sealed Spool
R
Spring
R
25
25 psi Bias Spring
R
85
85 psi Bias Spring
R
135
135 psi Bias Spring