The most common and versatile types of control valves are sliding-stem globe and angle valves. Their popularity derives from rugged construction and the many options available that make them suitable for a variety of process applications, including severe service.

ordinary locator adopts mechanical force balance principle work, namely jet flapper technology, mainly exist in the following fault types

High pressure restore valve: one type of valve structure, due to streamline internal contour and minimum fluid flow, it will disperse relatively few fluid energy.

Three-way valves are normally used as mixing or diverting valves to control the flow of liquids. The difference between the two applications is in the piping layout and the internal design of the valve.

In power plants, such as nuclear plants, steam control valves are outlined in the steam chest which is in communication with the saturated steam coming from the steam generator. The control valves in general include a valve bonnet mounted in a valve body. The valve bonnet carries an axially sliding

Pumps and injectors having a control valve with an adjustable stroke for rate shaping and associated methods for operating a control valve are provided. The pump or injector comprises a body with a pumping chamber and a control valve chamber. A plunger is disposed in the pumping chamber. An actuatab

a hydraulic valve is driven by a linear force motor. The valve controller receivers a positon-command from the fieldbus via the system controller and drives the linear force motor until the output signal fo the position sensor equals the input value of the position command.

any pneumatic devices require control valves that are cheap, reliable and rugged. Heretofore it has been proposed to employ a three-way ball valve of the type comprising a valve body having two axially spaced ports, a valve seat associated with each of those ports, a third port located between the o