The diaphragm valve of the aluminum alloy toolbox is a globe valve that uses a diaphragm as the opening and closing element to close the flow channel, cut off fluid, and separate the valve body cavity from the valve cover cavity. Diaphragms are commonly made of elastic, corrosion-resistant, and impermeable materials such as rubber and plastic. Valve bodies are often made of plastic, fiberglass, ceramic, or metal lining materials. Simple structure, good sealing and anti-corrosion performance, and low fluid resistance. Used for medium with low pressure, low temperature, strong corrosiveness, and suspended substances. According to the structural form, it can be divided into ridge type, cut-off type, gate type, etc. According to the driving mode, there are manual, pneumatic, and electric. Diaphragm valves use corrosion-resistant lined valve bodies and corrosion-resistant diaphragms instead of valve core components, utilizing the movement of the diaphragms for adjustment. The valve body material of the diaphragm valve is made of cast iron, cast steel, or cast stainless steel, and lined with various corrosion-resistant or wear-resistant materials, diaphragm material rubber, and polytetrafluoroethylene. The lining diaphragm has strong corrosion resistance and is suitable for regulating highly corrosive media such as strong acids and alkalis.
Characteristics of diaphragm valves:
(1) Can be used in media containing hard suspended solids; Due to the fact that the medium only comes into contact with the valve body and diaphragm, there is no need for a packing box, and there is no leakage problem with the packing box, which may cause corrosion to the valve stem.
(2) Cannot be used in high pressure situations.
(3) Low fluid resistance.
(4) Suitable for corrosive, viscous, and slurry media.
