What is the function and structure of the gauge valve on a pressure gauge?
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What is the function and structure of the gauge valve, with pictures if possible?
Gauge valve? The poster is referring to a one-way valve, which is used to isolate the pressure gauge online when it malfunctions
Isn’t that a pipe valve? I’m referring to the valve assembly of the pressure gauge
Do you mean a pressure transmitter or an on-site pressure gauge? On-site pressure gauges come with valve assemblies, usually 4-way or 3-way valves. The advantage of this is that it ensures the gauge face is installed in the correct orientation regardless of the direction from which pressure is taken, thus eliminating the need for on-site installers to create bends； Another function is to serve for drainage; when the process stop valve is closed, there is still fluid remaining in the pressure guiding tube. If the pressure is high, it can be dangerous to remove the pressure gauge directly. In such cases, the drain valve can be used first to empty the fluid from the pressure guiding tube, allowing the pressure gauge to be removed safely thereafter.
Thanks to the person above. Both pressure transmitters and pressure gauges have valve assemblies, right?
Generally, a valve assembly is not required; the pressure relief process can be carried out while loosening the pressure gauge