Valve exerciser

A valve exerciser is a device that operates a valve periodically in order to prevent it from becoming so stiff that it no longer works. Valves that are left in a static position for a long time may corrode,[1] or become blocked with mineral deposits.[2] Electronic valve exercisers can provide information on the health of a valve by monitoring the required operating torque.[3]

References

Zane Satterfield. Valve Exercising (Report). National Environment Services Center. CiteSeerX 10.1.1.432.2080.
William E. Forsthoffer (2021). Forsthoffer's Proven Guidelines for Rotating Machinery Excellence. Elsevier Science. p. 251. ISBN 9780323860192.
Syam Babu Nayer; Larry R. Carson; Peter Olson Sr (1 August 2008). "Operation and Maintenance, Exercising Valves Boosts System Performance". Opflow. 34 (8): 14–16. doi:10.1002/j.1551-8701.2008.tb02941.x.

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[1] Zane Satterfield. Valve Exercising (Report). National Environment Services Center. CiteSeerX 10.1.1.432.2080.

[2] William E. Forsthoffer (2021). Forsthoffer's Proven Guidelines for Rotating Machinery Excellence. Elsevier Science. p. 251. ISBN 9780323860192.

[3] Syam Babu Nayer; Larry R. Carson; Peter Olson Sr (1 August 2008). "Operation and Maintenance, Exercising Valves Boosts System Performance". Opflow. 34 (8): 14–16. doi:10.1002/j.1551-8701.2008.tb02941.x.