Features:

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 disc and other parts above the diaphragm are not corroded by the medium, the packing sealing structure is omitted, and the medium leakage will not occur.

1. The diaphragm made of soft seals such as rubber or plastic has better sealing performance. Since the diaphragm is a wearing part, it should be replaced regularly according to the characteristics of the medium.

2. Limited by the diaphragm material, the diaphragm valve is suitable for low pressure and relatively low temperature occasions.

3. Diaphragm valves can be divided into six types according to the structure: house type, DC type, cut-off type, straight-through type, gate type and right-angle type; the connection form is usually flange connection; according to the driving mode, it can be divided into manual, electric and pneumatic There are three types, among which the pneumatic drive is divided into three types: normally open, normally closed and reciprocating.

4. Generally not suitable for use in pipelines with temperatures higher than 60 degrees and conveying organic solvents and strong oxidizing media, nor in pipelines with higher pressures

Diaphragm valve is a valve used to open or block airflow in the fluid system of 1.3×10-5~2.5X106Pa.

Principle of fluorine-lined diaphragm valve:

The drive screw is driven by compressed air to make the valve core move up and down, and the diaphragm is pulled up and down to close and open. Features: compact, simple, small size, beautiful appearance; the switch is guided and the movement is stable; the closing torque is small, the life is long, ≥ 300,000 times; the diaphragm compression can be automatically adjusted, the pressure is uniform, and the sealing is reliable; diaphragm mounted The spool is push-in, easy to replace

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