The National Fluid Power Association (NFPA) published a new ISO
standard --ISO 5781:2000--that addresses the interchangeability of valves in
hydraulic systems. Valves covered in the new standard include pressure-reducing
valves, sequence valves, unloading valves, throttle valves, and check valves.
The standard applies to valves used in industrial equipment such
as machine tools and packaging equipment. It specifies dimensions and other
characteristics of the surfaces on which the valves are mounted.
NFPA is making the documents available for $43 for NFPA members.
To order, contact NFPA's publication department at (414) 778-3353 or firstname.lastname@example.org.
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