Product Features And Working Principle Of Fluorine-lined Diaphragm Valve

Introduction:

Lined Diaphragm Valve is a special form of cut-off valve, which appeared in the 1920s. Its opening and closing parts are 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 components, so it is called a diaphragm valve.

Product features:

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 disc and other parts above the diaphragm are not corroded by the medium, eliminating the packing sealing structure and preventing the medium from leaking.

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

2. Due to the limitation of 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 their structural form: house type, direct current type, stop type, straight-through type, gate type and right-angle type; the connection form is usually flange connection; according to the driving mode, they can be divided into three types: manual, electric and pneumatic. Among them, pneumatic drive is divided into three types: normally open, normally closed and reciprocating.

4. It is generally not suitable for use in pipelines with temperatures above 60 degrees and for conveying organic solvents and strong oxidizing media, nor in pipelines with higher pressures.

Diaphragm valves are valves used to open or cut off airflow in fluid systems of 1.3×10-5～2.5X106Pa.

Working principle:

Compressed air is used as the power to drive the transmission screw to move the valve core up and down, and at the same time pull the diaphragm up and down to close and open it. Features: compact, simple, small size, beautiful appearance; the switch has a guide and the movement is smooth; the closing torque is small, the service life is long, ≥ 300,000 times; the diaphragm pressure can be automatically adjusted, the pressure is uniform, and the seal is reliable; the diaphragm is pushed into the valve core, which is easy to replace.