Directional Valves

DC10-40 — Pilot-Operated Check Valve
  Selection guide - similar valves.
  PDF file of this page
  STP file for DC10-40.
  Request a quote

DC10-40 Valve

DC10-40 Valve symbol

A screw-in, cartridge-style, dual, pilot-operated, hydraulic check valve for blocking or
load-holding. This valve has an optional thermal relief from port 4 to port 3.

The DC10-40 will block flow from 1 to 2, and from 4 to 3. Flow is allowed in the opposite direction
when pressure is applied to port 2 and/or port 3.
The valve has a 3:1 pilot ratio, so at least 1/3 of the load pressure at port 1 or 4 is required
at the pilot lines (ports 2 or 3) to open the flow passage to allow flow from ports 1 or 4.
The check is spring-biased at 1.7 bar (25 psi) to assure holding in a static or no-load condition.

• Hardened seat for long life and low leakage.
• Low pressure drop.
• Optional thermal relief.

Operating Pressure: Inlet: 240 bar (3500 psi)
Inlet Flow: up to 30.3 lpm (8 gpm)
Thermal Relief Crack Pressure Range: 310 to 386 bar (4500 to 5600 psi)
Thermal Relief Valve Leakage: 0.25 ml/minute (5 drops/minute) at up to 85% of crack pressure.
Maximum Check Valve Leakage: 0.25 ml/minute (5 drops/minute) at 240 bar (3500 psi).
Pilot Ratio: 3:1
Check Spring Bias: 1.72 bar (25 psi)
Temperature: -40 to 100 °C (-40 to 212 °F) with Buna seals;
   -26 to 204 °C (-15 to 400 °F) with Fluorocarbon seals.
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No restrictions; See page 9.020.1
Cavity: VC10-4; See page 9.110.1_4w
Cavity Tool: CT10-4xx; See page 8.600.1
Seal Kit: SK10-4x-MMM; See page 8.650.1


DC10-40 Valve Performance Chart
DC10-40 Valve Dimensions


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

Standard Ported Body: Weight:
0.34 kg (0.75 lb); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi). Ductile iron bodies available; dimensions may differ.
See page 8.010.1_4w

DC10-40 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP file for DC10-40 Request a quote.