The Aventics Series 581 4-way ISO directional control pneumatic valves incorporates a non-lubricated, balanced spool and sleeve consisting of a stainless steel sleeve with a polished inner diameter, a nylon spool, and a series of static O-rings and Teflon® wear rings to reduce friction.
The series 581 directional control valves (available in four sizes: size 1, size 2, size 3 and size 4) offer higher flow rates compared to other ISO valves within the same size category.
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