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Valves General

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What is the difference between flashing and cavitation in a valve?

Flashing and cavitation phenomenon can occur in piping systems carrying liquids where the flow is…
0 answers -2 votes 1625 views
Posted  5 years  ago by  admin
Valves General
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What are bellow sealed valves?

Bellow seal valves are used to eliminate valve emissions or leakage through the stem seals.…
0 answers 1 vote 926 views
Posted  5 years  ago by  admin
Valves General
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Why do some valves require extended bonnet?

Bonnet extensions are required in valves when they handle high or low temperature service which…
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Posted  5 years  ago by  admin
Valves General
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What is Cv of a valve?

The relationship between pressure drop and flow rate through a valve is conveniently expressed by…
0 answers 0 votes 1084 views
Posted  5 years  ago by  admin
Valves General
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What are the standards for fugitive emission testing of valves?

Following are the applicable standards for fugitive emission testing of valves: API STD 624 -…
0 answers -1 votes 920 views
Posted  5 years  ago by  admin
Valves General
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What is a dead man's handle for a valve?

A dead man's handle is a spring return handle provided for applications requiring draining or…
0 answers 0 votes 1236 views
Posted  5 years  ago by  admin
Valves General
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What are the limitations of soft seated valves with respect to pressure rating?

Valves provided with soft seat may not comply with the pressure rating combination specified in…
0 answers 0 votes 1188 views
Posted  5 years  ago by  admin
Valves General
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What are the main functions of a Valve?

Valves in piping systems are used to block flow, throttle or control flow and prevent…
1 answer 0 votes 726 views
Posted  5 years  ago by  admin
Valves General
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What is definition of Valve Trim?

The internal elements of a valve in contact with the service fluid are referred to…
1 answer 0 votes 1572 views
Posted  6 years  ago by  admin
Valves General