control valve re-sizing
control valve re-sizing
(OP)
HI,
for control valve resizing (to a bigger size, to handle more flow), does it have to be increasing the valve body size also or only changing the valve internals (trim) is enough ? and who makes this decision, is it the engineer or the sizing software results ?
Your comments please.
for control valve resizing (to a bigger size, to handle more flow), does it have to be increasing the valve body size also or only changing the valve internals (trim) is enough ? and who makes this decision, is it the engineer or the sizing software results ?
Your comments please.
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RE: control valve re-sizing
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RE: control valve re-sizing
The engineer first typically evaluates whether increasing the trim only will provide the required flow with the given body size. If the maximum trim for a given body size won't provide the required flow, then the body size will need to be increased and a trim selected that meets the flow spec. The engineer typically performs these analyses using sizing software. The engineer makes the final decision based on the analyses.
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