Diaphragm valve is a globe valve that uses a diaphragm as
an opening and closing member to close the flow channel, cut off
the fluid, and separate the inner cavity of the valve body and the
inner cavity of the valve cover.
Diaphragms are usually made of elastic, corrosion-resistant,
impermeable materials such as rubber and plastic. The valve body is
mostly made of plastic, glass fiber reinforced plastic, ceramic or
metal rubber-lined material. Simple structure, good sealing and
anti-corrosion performance, and small fluid resistance. For low
pressure, low temperature, highly corrosive and medium containing
suspended substances. According to the structure, it can be divided
into roof type, cut-off type, gate type and so on. According to the
driving mode, it is divided into manual, pneumatic and electric.