Valve

EN/GOST/ASME VALVE For pipeline

The valve is used to open and close the pipeline, control the flow direction, adjust and control the parameters (temperature, pressure and flow) of the transmission medium. According to its function, it can be divided into shut-off valve, check valve, reg
Description

What are Valves?

Valves are mechanical devices that controls the flow and pressure within a system or process. They are essential components of a piping system that conveys liquids, gases, vapors, slurries etc..

Different types of valves are available: gate, globe, plug, ball, butterfly, check, diaphragm, pinch, pressure relief, control valves etc. Each of these types has a number of models, each with different features and functional capabilities. Some valves are self-operated while others manually or with an actuator or pneumatic or hydraulic is operated.


Class Ratings

Pressure-temperature ratings of valves are designated by class numbers. ASME B16.34, Valves-Flanged, Threaded, and Welding End is one of the most widely used valve standards. It defines three types of classes: standard, special, and limited. ASME B16.34 covers Class 150, 300, 400, 600, 900, 1500, 2500, and 4500 valves.

 

CLASSIFICATION OF VALVES BASED ON MOTION

Valve Types Linear Motion Rotary Motion Quarter Turn
Gate YES NO NO
Globe YES NO NO
Plug NO YES YES
Ball NO YES YES
Butterfly NO YES YES
Swing Check NO YES NO
Diaphragm YES NO NO
Pinch YES NO NO
Safety YES NO NO
Relief YES NO NO
Valve Types Linear Motion Rotary Motion Quarter Turn

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