Technical Guide
DAN-LIQ-TG-44-rev0813
November 2013
Daniel Measurement and Control
Theory, Principle of Operation and Applications
This brochure has been prepared to provide a thorough understanding of the principle of operation and typical applications of the
Daniel Control Valves.
The Daniel Valves operate on a basic hydraulic principle and are of the balanced-piston design, spring biased (loaded). The
valves are self contained, pilot operated for most applications (some exceptions) and use the line product as their power source.
The exceptions are valves with an external power operator that do not require line product to operate. (Ref. Models 531, 532, and
762 Series).
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