Is it necessary to install a pressure gauge at the pump inlet?
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Is it necessary to install a pressure gauge at the pump inlet? Should a regular pressure gauge or a shock-resistant pressure gauge be used?
It seems there’s no need for that; I’ve hardly ever seen pressure gauges installed on the inlet of pumps. This is because the inlet of the pump is usually under slight negative pressure (or there is pressure upstream). If there is pressure upstream, a pressure gauge can be installed to monitor that pressure; otherwise, it is pointless.
No pressure gauge is needed at the pump inlet; it’s only the static pressure that matters
If it is installed in a self-priming manner, there is no need to add one; but if it is installed in a self-priming style, it is better to add one
Reply to 1# yijiangcsxdl: First, ask what kind of pump the original poster is using Some pumps require a pressure gauge. Some pump manufacturers require a high back pressure for the pumps; otherwise, issues such as vibration or insufficient flow rate may occur. I have used several positive displacement pumps from Chongqing Pump Factory, and all of them have such requirements; that’s why we installed pressure gauges on them. Due to the frequent vibrations, it is best to choose gauges that are~~~~~~~~
There is no need for this, except in cases of special requests.
There are issues with pressure gauges; some are necessary while others aren’t. A pressure gauge is usually installed at the inlet of the condensate pump, and most large-scale units use shock-resistant pressure gauges for measuring oil pressure, return oil temperature, etc
Reply to 1# yijiangcsxdl: In several projects I’ve worked on before, whether it was centrifugal pumps or reciprocating pumps, a vacuum gauge was installed before the pump to measure the vacuum level in the pipeline ahead of it. The vacuum gauge at the inlet of the reciprocating pump is shock-resistant, while a regular pressure gauge is used in front of the centrifugal pump.
I agree with the suggestion from the 5th floor. It also depends on what type of pump you choose and whether the manufacturer has any specific requirements; considerations should be based on the process requirements, rather than simply deciding whether to include it or not.
Reply to 1# yijiangcsxdl: For pumps, a vacuum gauge is generally needed at the suction inlet; it’s pointless to install a pressure gauge there