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Tech Brief:

When specifying solenoid valves watch for volume and velocity

The purpose of this Tech Brief is to raise awareness of the importance of, and how to calculate velocity. Specifically that,

Allowable pressure drop across a valve does NOT equal Maximum inlet minus Maximum backpressure (or atmosphere)

Note: Solenoid valve maximum inlet and back pressure rating are not to provide a maximum pressure drop value across the valve. Volume and velocity must be considered as equally important data as the pressure ratings.

Some Helpful Links for this Tech Brief:

Understanding Flow Rate, Pressure Drop, and Cv Factor.

Effects of Water Hammer and Pulsations

Online Pressure Drop Calculator


Plast-O-Matic Valves, Inc.
1384 Pompton Avenue
Cedar Grove, NJ 07009-1095 USA
Voice: (973) 256-3000
Fax: (973) 256-4745

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