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.

Ratings

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
Maximum 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)

Operating Parameters

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

Properties

Cartridge weight
0.07 kg (0.16 lb)
Internal wetted surface area
113 cm² (17.5 in²)

Performance

DC08-40_Perf_Chrt

Dimensions

DC08-40_Dim_Dwg

Materials

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.

Installation Specifications

Cavity
VC08-4
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

Accessories

Seal kit
SK08-4N-MMM Buna N
SK08-4V-MMM Fluorocarbon
SK08-4P-MMM Polyurethane
SK08-4U-OOO Urethane

Order code

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
DC08-40_Order