Tél. 33 (0)3 23 70 70 00 • duff-france@duffnorton.fr

4000 & 4100 Series


Duff-Norton Europe ball check valves for high or low pressure hydraulic circuits prevent flow reversal in a circuit or protect against overpressure that can occur in certain parts of a circuit.

Unguided valves are not completely sealed on gas, compressed air, steam, water, etc. circuits.


Technical Data:

Number of ports: 1 way
Fluid: Air, Water, Steam, 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″
Material: Steel, Stainless Steel
Surface treatment: Not available
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:

– 4013K_0.5B
– 4013K_10B

Stainless Steel,Models:

Not available

STEP files for downloading:

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