The structure characteristics of pneumatic diaphragm valve

- - - - - - - - - - - - : the structure characteristics of pneumatic diaphragm valve? Pneumatic diaphragm valve is a special kind of block valves, appear Yu Shiji s. Its opening and closing is a diaphragm, made with soft materials within the valve body cavity with the valve cover cavity and drive components separated, therefore calls the pneumatic diaphragm valve. Pneumatic diaphragm valve prominent feature is the lower part of the diaphragm body inner cavity and the upper cover inner chamber is separated, the located above the diaphragm of the stem and disc parts from corrosion medium, such as eliminating the packing seal structure, and won't produce leakage of medium. Pneumatic diaphragm valve is usually divided into often closed type pneumatic diaphragm valve, often open the pneumatic diaphragm valve and reciprocating pneumatic diaphragm valve. Often closed type pneumatic diaphragm valve details often closed characteristics GBJ - pneumatic rubber diaphragm valve products Type breath often move GBW - GBJ - Type GBFS - Model design and manufacture according to GB structure length according to GB flange size according to GB test and inspection according to GB/T often closed type pneumatic rubber diaphragm valve GBJ often closed type pneumatic rubber diaphragm valve purpose and main performance specification: GBJ often closed series pneumatic rubber diaphragm valve diaphragm valve according to different depending on the wrapping material, suitable for different fluid pipeline under different temperature, opening and closing mechanism as control medium flow. GBJ often closed type pneumatic rubber diaphragm valve recommended range of various kinds of visual wrapping material. The structure characteristics of pneumatic diaphragm valve prominent feature is the lower part of the diaphragm valve body cavity and the upper cover inner chamber is separated, the located above the diaphragm of the stem and disc parts from corrosion medium, such as eliminating the packing seal structure, and won't produce leakage of medium. And made of rubber or plastic soft seal diaphragm, sealing is good. Because the diaphragm for wearing parts, should be replaced periodically depending on the dielectric properties. , restricted by the diaphragm material, diaphragm valve is suitable for the occasion of relatively low pressure and temperature is not high. , the diaphragm valve can be divided into the form of the structure house type, once-through, cut-off, straight-through type, disc type and right Angle type six; Form is usually connected with flange connection; According to the drive mode can be divided into manual, electric and pneumatic three, including pneumatic drive is divided into often open, often closed and reciprocating three. , should not be commonly used for temperature higher degrees and organic solvents and strong oxidizing medium pipeline, unfavorable also used in high pressure pipeline. Pneumatic diaphragm valve |