Mens, Maatwerk & Techniek

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Namur Valves

General information:Valves with the 1/4“ and 1/2“ NAMUR-interfaceand different flow rates

The Hafner NAMUR-valves are available with the 1/4” standard in accordance to VDI / VDE 3845also called NAMUR 1 – as well as with the 1/2” standard – also called NAMUR 2.

Notice: Difference between 1/4” – 1/8” and 1/2 “ – 3/8“ is port-size and position as well as the size, position and depth of the fixing screws in the actuator. On actuators NAMUR 1 (G 1/8” and G 1/4”) the same NAMUR-valves can be used. The same is true on NAMUR 2 (G 3/8” and G 1/2”) where also the same NAMUR-valves fit.

Hafner’s target to offer valves with maximum flow leads to offer 3 sizes of NAMUR-valves.

Series 701 / 711:
Orifice size 7 1.250 l/min
NAMUR-interface 1/4”
Port size G 1/4” or 1/4” NPT

Series 101:
Orifice size 10 2.250 l/min
NAMUR-interface 1/4”
Port size G 3/8”

Series 121:
Orifice size 12 3.000 l/min
NAMUR-interface 1/2”
Port size G 1/2” or 1/2” NPT

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