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4000M & 4100M Series


Duff-Norton Europe piston check valves prevent reverse flow in a circuit or protect against overpressure that can occur in some places of a circuit.
The guided valve may or may not have a synthetic rubber seal that makes it completely watertight on water, gas, compressed air, etc.


Technical Data:

Number of ports: 1 way
Fluid: Air, Water, Hydraulic Oil, Thermal Fluid
Rotation Speed: Not applicable
Pressure working: Low (from 0 to 10 bars), Intermediate (from 0 to 100 bars), High (from 0 to 350 bars), Very High (from 0 to 1500 bars)
Size: from 1/4″ to 3/8″, from 3/8″ to 1/2″, from 1/2″ to 1″, from 1″ to 1″ 1/4, from 1″ 1/4 to 1″ 1/2, from 1″ 1/2 to 2″
Material: Steel, Stainless Steel
Surface treatment: Chemical Nickel
Implantation: Straight
Temperature working: -20°C à 200°C
Connection: Thread

*for any other type of connection, please contact us.

Quick Ship Program (QSP) :

Available products within 1 working day (ex-works)

Carbon Steel:

Not available

Stainless Steel,Models:

– 4021IM_0.3B
– 4121IM_0.5B

STEP files for downloading:

[downloads category=step tag=4000 orderby=ID order=ASC]