Which type of steam pressure gauge should be used?
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Which type of pressure gauge is generally better for steam? Can shock-resistant pressure gauges be used? Must the valve between the pressure gauge and the pipe elbow be a needle valve? Is it necessary to use copper gaskets between the valve and the pressure gauge?
For steam pressure gauges, ordinary glass tube or spring-type types are sufficient; the main thing to pay attention to is the temperature range of use. As for whether a needle valve is necessary, it’s not absolutely required Generally, pressure gauges have small diameters, and needle valves are commonly used; I have not used other valves with small diameters. 3. Are copper gaskets used? Sometimes they are not used – it depends mainly on whether there is any leakage
For measuring steam pressure, it is best to use gauges with silver-welded fixed and free ends, as they are resistant to high temperatures. Generally, spring tubes for medium and low pressures are welded, usually by soldering; they cannot withstand high temperatures and are prone to leakage. Shanghai Instrument Factory No. 4 can customize it.
Pressure gauges used to measure steam are generally installed with a condensation coil, and there is no vibration in the steam pipes either; therefore, a regular gauge is sufficient. Generally, steam fluctuations are not significant, so it isn’t necessary to install needle valves; moreover, the presence of a condensation tube doesn’t necessarily require copper gaskets
A regular pressure gauge will suffice, but a condensation elbow or isolation tank is required; no special requirements exist for valves or gaskets.
A regular stainless steel pressure gauge can be used; if it is to be installed on a pump, a shock-resistant pressure gauge can be chosen. As for the stop valve, there are no strict requirements; either a stop valve or a ball valve can be used, and PTFE gaskets can be employed.
A regular pressure gauge will suffice; there is no need for a copper gasket. It should be noted that it must be calibrated before use.
It is best not to use PTFE gaskets, as leaks will definitely occur at high steam temperatures; it is preferable to use copper gaskets or metal wound gaskets.
A pressure gauge with a capillary is sufficient