Wenhan Fluid Focus On Sanitary Diaphragm Valve

Wenhan fluid focus on sanitary diaphragm valve

Sanitary diaphragm valve is a special form of cut-off valve, the opening and closing part is a diaphragm made of soft material, which separates the valve body cavity from the valve cover cavity. The diaphragm valve is really nothing more than a "clamp" valve, an elastic, flexible diaphragm attached to the compression part with a stud. The compression part is moved up and down by the valve stem. When the compression part is raised, the diaphragm is raised to create a path. When the compression part is lowered, the diaphragm is pressed against the body weir (if it is a weir valve) or against the bottom of the profile (if it is a straight through valve). Diaphragm valves are suitable for switching and throttling.

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 located above the diaphragm are not corroded by the medium, eliminating the packing seal structure, and will not produce media leakage.

1. The diaphragm made of soft sealing such as rubber or plastic has good sealing performance. Because the diaphragm is a wearing part, it should be replaced regularly depending on the characteristics of the medium.

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

3, diaphragm valve according to the structural form can be divided into: house type, straight flow, cut-off, straight through, ram type and right Angle type six; The connection form is usually flange connection; According to the driving mode can be divided into manual, electric and pneumatic three, of which pneumatic drive is divided into normally open, normally closed and reciprocating three.

4. It is generally not suitable for use in pipelines with temperatures higher than 60 degrees and transporting organic solvents and strong oxidizing media, and it is not suitable for use in pipelines with higher pressure

advantage

The diaphragm valve itself is specially designed for ultra-pure media or highly polluted, very viscous liquid, gas, corrosive or inert media. When combined with control equipment, diaphragm valves can replace other traditional control systems, especially for solid and easily contaminated inert media. Products are mainly used in biopharmaceutical, food, industry; As well as power, chemical, electroplating, and other industries in the industrial water treatment, but also used in the production of semiconductor wafers, diaphragm valves are especially suitable for the transport of corrosive, viscous fluids, such as mud, food, drugs, texturing adhesive fluid, because the pipeline, diaphragm valve operating mechanism, is not exposed to the transport fluid, it is not polluting, do not need to fill, The stem packing part is also unlikely to leak.