The main characteristics of pneumatic diaphragm valves ( 1)

with pneumatic drive is divided into often open, often closed and reciprocating three. Pneumatic diaphragm valve can be divided into: the form of the structure of 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.
Yu Shiji s. Open-close part is made of a soft material diaphragm, pneumatic diaphragm valve is a special form of truncation pneumatic valve. In the pneumatic valve body cavity with the pneumatic valve cover cavity and drive components separated, therefore calls pneumatic diaphragm valve.
the characteristics of pneumatic diaphragm valve is as follows:
the located above the diaphragm of the pneumatic valve stem, pneumatic valve parts from corrosion medium, such as the most prominent feature is the lower part of the pneumatic diaphragm valve body cavity and the upper cavity is separated in pneumatic valve cover. Get rid of the packing seal structure and medium leakage will not occur.
good sealing. Due to the diaphragm for wearing parts, made of rubber or plastic soft seal diaphragm. Should be replaced periodically depending on the dielectric properties.
pneumatic diaphragm valve is suitable for low pressure and temperature is relatively high. Restricted by the diaphragm material.