Double Holding Valve0 pages
Shafer
nnnnDHV
nnnnDouble Holding Valve
nnnnThe Shafer linear actuator uses special valving
nnnnto trap hydraulic fluid on both sides of the piston
nnnnin order to maintain position. Older models use
nnnna pair of valves called latches for this purpose.
nnnnNewer models (after S/N 20000, in late 1976)
nnnnuse a single valve called a Double Holding
nnnnValve.
nnnnThe Shafer Double Holding Valve (DHV) is a
nnnnspecially designed double pilot operated check
nnnnvalve with double thermal relief valves. The
nnnnvalve is designed in various sizes and pressure
nnnncapacities to match the requirements of each
nnnnapplication. All reference and return springs and
nnnnother critical internal components are constantly
nnnnsubmerged in hydraulic fluid which eliminated
nnnncorrosion problems.
nnnnEMERSON
nnnnProcess Management
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