SYMBOL:
 |
DESCRIPTION
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.
OPERATION
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.
FEATURES
• Hardened seat for long life and low leakage.
• Low pressure drop.
• Optional thermal relief.
RATINGS
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 |
