Rubber Lined Diaphragm Valve
Introduction:
Rubber lined diaphragm valve is a special type of block valve. Its opening and closing part is a diaphragm made of soft material, which separates the inner cavity of the valve body from the inner cavity of the valve cover and the driving parts, so it is called the diaphragm valve. Its most prominent feature is that the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper bonnet, so that the valve stem, disc and other parts above the diaphragm are not subject to medium corrosion, and the packing seal structure is omitted, and no medium leakage will occur.
Characteristic:
The most prominent feature is that the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper valve cover, so that the valve stem, valve clack and other parts above the diaphragm are not subject to medium corrosion, thus eliminating the packing seal structure and causing no medium leakage.
1. Diaphragm made of soft seal such as rubber or plastic has good sealing performance. As the diaphragm is a wearing part, it should be replaced regularly according to the characteristics of the medium.
2. Limited by diaphragm material, diaphragm valve is suitable for low pressure and relatively low temperature applications.
3. Diaphragm valve can be divided into six types according to structure: roof type, direct current type, stop type, straight through type, gate type and right angle type; The connection type is usually flange connection; According to the driving mode, it can be divided into three types: manual, electric and pneumatic. The pneumatic drive can be divided into three types: normally open, normally closed and reciprocating.
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