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Type of Valves and Its Features

Posted by Antony Thomas at Saturday, May 14, 2016

Type of Valves and its Features

There are three basic functions of valves are

1. To stop flow

2. To keep a constant direction of flow

3. To regulate the flow rate and pressure.

To select the correct valve to accomplish these functions properly, an outline of the different types of valves and their features is given below.

 

image

 

Butterfly Valve:

  • Valve shaped like a butterfly.
  • Tight shut-off and can be used as a control valve.
  • Little resistance to flow (allows smooth flow).
  • Optimal for automated operation with a low operating torque and 90 degrees operating angle.
  • Lightweight and compact (large diameter models are also available).

 

Check Valve:

  • For use when flow is only in one direction.
  • Lightweight disc allows vertical installation.
  • High operating speed prevents water hammer

For more detail on Check valves and its description  check the below link

TYPES OF CHECK VALVES AND DESCRIPTION

 

Gate Valve:

  • Like its name implies, the gate is lowered to cut off the path of flow.
  • For use as an on/off valve (not suitable as a control valve).
  • Little resistance to flow when fully open (allows smooth flow).
  • Long stroke requires time to open and close; not suitable for quick operation.

Globe Valve:

  • The globe-shaped body controls the fluid into a S-shaped flow.
  • Tight shut-off and can be used as a control valve.
  • Large resistance to flow (does not allow smooth flow).
  • Much power is required to open and close the valve (not suitable for large sizes)

Ball Valve:

  • Valve stopper is ball shaped.
  • For use as an on/off valve (not suitable as a control valve).
  • Little resistance to flow when fully open (allows smooth flow).
  • Optimal for automated operation with a 90 degrees operating angle.
  • Advanced technology is required to manufacture ball.

PIPING QUESTIONNAIRE - VALVE (PART 1 OF 3)

PIPING QUESTIONNAIRE - VALVE (PART 2 OF 3)

PIPING QUESTIONNAIRE - VALVE (PART 3 OF 3)

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