What kind of valve does the pressure gauge valve belong to?
Pressure gauge valve is a special valve, from the valve structure, belonging to the needle valve.
Usually you ask this question is wrong! Because at low pressure, both spherical and needle valves can be used!Because it is used to distinguish between high pressure and low pressure!But reliability is good needle valve!
Usually cut-off valve, ball valve, needle valve.The valve also called the valve valve is forced closed valve, so the valve is closed, the valve must exert pressure to force the sealing surface does not leak. When the medium into the valve from the bottom of the valve, the operating force required to overcome the resistance, is the stem and the packing friction and pressure generated by the media thrust force than the valve off the valve opening force, so the diameter of the valve stem, otherwise it will bend the stem top of the fault.Ball valve is the opening and closing parts (sphere) driven by the stem, and around the axis of the ball valve for rotation of the valve. Can also be used to regulate and control fluid, strong shear force between the metal seat seal V type ball valve V type ball core and welding hard alloy, especially suitable for containing fibers, small solid particles and other media.The instrument needle valve is an important part of instrument measuring pipeline system. It mainly consists of globe valve and ball valve. Its function is to open or cut off the passage of pipeline. The spool of the needle valve is a very sharp cone, which is inserted into the valve seat as if it were a needle.
