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Pneumatic Operator, 3 Way, Poppet DesignItem # 75046-71-21

Three way pneumatically operated poppet valves provide high flow rates in a basic valve design. Available up to 1/2 ported sizes in normally closed and normally open versions. Pilot ports are 1/8 inch and require a minimum of 35 PSI to operate.

Operating pressure range is 0 to 145 PSI. Pilot port size is 1/8. Actuation pressure (pilot pressure) is 35 PSI minimum.
Through body mounting holes are 3/16" for 1/8 and 1/4 ported valves, 1/4" for 1/2 ported valves.

For valve specifications see appendix. For detail dimensions contact factory.
Item #75046-71-21
DescriptionNormally Closed Spring Return
Port Type1/4 NPT Ports (USA Std.)
Orifice0.315 in.
8 mm
Body No.6P
Length2 5/8 in.
Width1 in.
Height1 5/8 in.
Body Mounting Hole3/16 in.
Operating Pressure Range0 to 145 psi
Cv1.11
Kv15.8
Flow @ 45 PSI28.9 SCFM
Flow @ 90 PSI50.5 SCFM
Flow @ 145 PSI81.9 SCFM
Flow @ 3 Bar820 lpm
Flow @ 6 Bar1430 lpm
Flow @ 10 Bar2320 lpm
Intended Use- Series 75 and 76 valves are intended for general purpose industrial applications utilizing normal shop air supply systems. For special applications with other media or other environments, contact Kuhnke.

Media- Compressed air or other neutral gases, properly filtered. For applications on liquids contact Kuhnke.

Lubrication- Valves operate on lubricated or non-lubricated systems. After using components in a lubricated system, do not switch to an un lubricated system. Avoid over lubrication.

Vacuum Applications- Spool Valve designs can be applied on vacuum systems. For applications using poppet valves, use only specially assembled valves shown in the catalog.

Dimensions and Design Changes- All dimensions in this catalog are approximate, if necessary, detailed drawings can be obtained from Kuhnke or from one of the Kuhnke websites. Dimensions, valve design and materials are subject to change without notice.

Metric and NPT threads- Although similar in size, valve port threads in metric ported valves are different from NPT versions. NPT versions have a tapered thread that is used to form a seal with the fitting thread. Metric thread is straight, and the seal is provided by an o-ring or washer normally included with the connection fitting. Metric fittings can be used on NPT threaded valves, but NPT fittings cannot be used on metric threaded valves.


If you are looking for Pneumatic Controls, Pneumatic Valves then look no further than Ellis/Kuhnke Controls.