Control valves

Control valves

Industry: Industrial valves

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Control valves

globe valve

Industrial valves; Control valves

A valve with a linear motion, push-pull stem, whose one or more ports and body are distinguished by a globular shaped cavity around the port region. This type of valve is characterized by a torturous ...

pressure recovery factor (F1)

Industrial valves; Control valves

A number used to describe the ratio between the pressure recovery after the vena contracta and the pressure drop at the vena contracta. It is a measure of the amount of pressure recovered between the ...

valve flow coefficient (Cv)

Industrial valves; Control valves

The valve flow coefficient is the number of U. S. Gallons per minute of 60 degree F water that will flow through a valve at a specified opening with a pressure drop of 1 psi across the valve.

Diaphragm actuator

Industrial valves; Control valves

Is a liquid (usually pneumatic) diaphragm operated pressure, defying the Assembly spring valve stem position in response to the input signal.

Quick opening

Industrial valves; Control valves

A flow characteristic that provides maximum change in flow rate at low travels. The curve is basically linear through the first 40% of travel. It then flattens out indicating little increase in flow ...

Actuator

Industrial valves; Control valves

A fluid-powered or electrically powered device that supplies force and motion to a valve closure member.

Piston actuator

Industrial valves; Control valves

A fluid-powered, normally pneumatic device in which the fluid acts upon a movable cylindrical member, the piston, to provide linear motion to the actuator stem. These units are spring or air opposed ...