SMC vacuum pneumatic valve pressure gauge pressure value reason analysis

SMC pneumatic valve decompression pressure gauge pressure value several reasons, one is the pressure gauge is not installed, under the condition of pressure gauge has arranged to check whether there is reduced pressure pneumatic valve is installed. Three is: the pressure gauge pressure value is too small, with reduced pressure pneumatic valve pressure value do not match, pressure gauge pressure value is too large or too small will influence the normal use of pressure gauge.
。 Choosing a SMC pneumatic valve decompression, need to pay attention to choose according to the technological requirements, normally open or normally closed type.
。 SMC pneumatic valve decompression main advantage is small size, convenient maintenance, reliable operation, price is cheap.
。 Pneumatic valve sealing performance is one of the main indicators of quality evaluation of pneumatic valve. Mainly includes the internal leakage and leakage. Internal leakage is refers to the pneumatic between the seat and closed on the degree of sealing medium; Leakage is refers to the leakage of pneumatic valve stem packing parts, in the mouth of the gasket leaking and pneumatic valve leakage caused by the casting defects, no leakage is allowed.
。 SMC pneumatic valve decompression selects the main control parameters designed for the allowed temperature range, nominal pressure, size, the size of the interface, etc.
。 SMC is reduced pressure pneumatic valve electromagnet drive pneumatic valves open and close, usually used in diameter in mm below two type control, used to cut off or more conversion gas road, connected, liquid road, etc.
SMC vacuum pneumatic valve pressure gauge pressure value reason analysis
SMC vacuum pneumatic valve need to be aware of when using:
) Export to pressure no more than % of inlet pressure. Output pressure shall not exceed the maximum setting pressure.
) To purge fully connected piping.
) The direction of air flow in the direction shown by the arrow installation, shall not be installed backwards.
) The use of plastic vacuum pneumatic valve, should avoid direct sunlight.
SMC decompression are two kinds of pneumatic valve pneumatic valve set - — Pneumatic valve and main pneumatic valve. Guide the design of the pneumatic valve is similar to direct acting pressure pneumatic valve. From leading pneumatic valve on the piston, the function of exhaust pressure to open the main pneumatic valve piston. If the pneumatic valve is bigger, cannot open directly, this design will open the pneumatic valve with population pressure. Therefore, this type of vacuum pneumatic valve, compared with the direct acting pressure pneumatic valve, under the same pipe size, capacity and accuracy ( + % ~ - %） Higher. With direct acting pressure pneumatic valve is the same, reduced pressure pneumatic valve internal pressure, without external sensing line installation; (3) diaphragm pressure pneumatic valve. This type of vacuum pneumatic valve, double diaphragm instead of the piston in the afferent type vacuum pneumatic valve. The increase of membrane area to open a large pneumatic valve, main and under the same pipe size, its capacity is larger than inbound type piston vacuum pneumatic valve. In addition, the diaphragm is more sensitive to stress change, the accuracy can reach ( + % ~ - %） 。 Positioning accuracy is higher due to the downstream of the sensing line ( Pneumatic valve outside) The location less gas or liquid turbulence. The reduced pressure pneumatic valve is very flexible, can use different types of pneumatic valve guide, such as pressure pneumatic valve, pneumatic valve and air temperature loading pneumatic valve.