Scribd
Upload
194 views3 pages

Valves

The document discusses different types of valves including solenoid valves, gate valves, globe valves, ball valves, butterfly valves, check valves, relief valves, and safety valves. Each valve type is suited for different control applications and uses. For example, gate valves are best for quick opening and closing of fully open or closed non-throttling applications, while globe valves are well-suited for linear control and throttling applications like flow regulation. The document provides details on the advantages and disadvantages of each type of valve.

Uploaded by

invincible111
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
194 views3 pages

Valves

The document discusses different types of valves including solenoid valves, gate valves, globe valves, ball valves, butterfly valves, check valves, relief valves, and safety valves. Each valve type is suited for different control applications and uses. For example, gate valves are best for quick opening and closing of fully open or closed non-throttling applications, while globe valves are well-suited for linear control and throttling applications like flow regulation. The document provides details on the advantages and disadvantages of each type of valve.

Uploaded by

invincible111
Copyright
© Attribution Non-Commercial (BY-NC)
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 3

Valve Types and Application

Solenoid Valve:
 Electrically Operated
 On/Off valve
Advantages:
 Remotely controlled

Gate Valves

Best Suited Control:  Quick Opening

Recommended Uses:
1.  Fully open/closed, non-throttling
2.  Infrequent operation
3.  Minimal fluid trapping in line

Applications:  Oil, gas, air, slurries, heavy liquids, steam, noncondensing gases, and corrosive
liquids

Advantages:                             Disadvantages:


1.  High capacity                         1.   Poor control
2.  Tight shutoff                           2.   Cavitate at low pressure drops
3.  Low cost                               3.   Cannot be used for throttling
4.  Little resistance to flow

Globe Valves
Best Suited Control:  Linear and Equal percentage

Recommended Uses:
1.  Throttling service/flow regulation
2.  Frequent operation

Applications:  Liquids, vapors, gases, corrosive substances,


slurries

Advantages: Disadvantages:
1.  Efficient throttling               1.   High pressure drop
2.  Accurate flow control        2.  More expensive than other valves
3.  Available in multiple ports

 
Ball Valves
Best Suited Control: Quick opening, linear

Recommended Uses:
1.  Fully open/closed, limited-throttling
2.  Higher temperature fluids

Applications: Most liquids, high temperatures,


slurries

Advantages:                         Disadvantages:


1.  Low cost                           1.   Poor throttling characteristics
2.  High capacity                     2.   Prone to cavitation
3.  Low leakage and maint.
4.  Tight sealing with low torque 

Butterfly Valves
Best Suited Control:  Linear, Equal percentage

Recommended Uses: 
1.  Fully open/closed or throttling services
2.  Frequent operation
3.  Minimal fluid trapping in line

Applications:  Liquids, gases, slurries, liquids with suspended


solids

Advantages:                        Disadvantages:


1.  Low cost and maint.        1.  High torque required for control
2.  High capacity                  2.   Prone to cavitation at lower flows
3.  Good flow control
4.  Low pressure drop

Other Valves
    Another type of valve commonly used in conjunction with other valves is called a check
valve.  Check valves are designed to restrict the flow to one direction.  If the flow reverses
direction, the check valve closes.   Relief valves are used to regulate the operating pressure of
incompressible flow.  Safety valves are used to release excess pressure in gases or
compressible fluids.
References:

Piston Operated Valve:

Applications:

 Industrial laundry (steam circuit)


 Special machinery
 Special machinery with steam circuit
 Food processing
 Chemical product processing
 Autoclaves and industrial boilers
 Tyre press or rubber parts applications (vulcanisation)
 Iron and steel industry

Iris Valve:

Applications:
 Gravity Flow

You might also like