Kuhnke 79 & 81 Series Pneumatic Valves - Pneumatically Operated.
A characterised feature of this type of valve is a hardened, cut stainless steel spool and sleeve. The spool and sleeve are mated together during the machining process to create a precision fit.
A light lubricating oil allows the spool to slide effortlessly within the sleeve, no seals are required therefore a mechanical life expectancy averaging 100 million cycles can be achieved. Valves are highly reliable when used within clean environments; they are particularly suited for use in medical, dentistry and laboratory equipment.
Steel spool valves are supplied with M5 ports as a 3/2 way single pilot control, or a 5/2 way single or double pilot control. Within this range we also offer differential pressure valves which can be used for maintaining pressure in air systems. The differential valve has a normal single air pilot return function, but with an additional port that can be used to return the valve to a normal position when a secondary pressure reaches supply pressure.
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