Why should I add a plug valve before the pressure gauge?
The installation of plug valves in front of the pressure gauges is mainly for the convenience of disassembly and installation of pressure gauges.
The installation of plug valves in front of the pressure gauges is mainly for the convenience of disassembly and installation of pressure gauges.
Reason：Plug valve can make rapid and accurate judgment on the valve position, to gauge the accuracy of online judgment; pressure gauge of online check online, pressure gauge valve shut automatically removed when the pressure signal buffer and cooling pressure gauge.Plug valve working principle:A valve with a through hole stopper as the opening and closing member. The plug body rotates with the valve stem to realize the opening and closing action. Small no filler plug, also known as "cock cock". The plug of the plug valve is mostly a cone (also has a cylinder), and the cone hole surface of the valve body is matched to form a sealing pair. Plug valve is the earliest use of a valve, simple structure, fast switching, fluid resistance is small. General plug valve seal by direct contact with the finishing of the metal plug body and the body, so the poor sealing, opening and closing force, easy to wear, usually only for low (no higher than 1 MPa) and small diameter (less than 100 mm).
