... conduit, simplify and save system equipment Y42XSD diaphragm valve products through the introduction of new technology, improved manufacturing ... Mainly by the diaphragm valve body, valve cover, compression spring, stem, diaphragm, cylinder liners, valve seats and gaskets and ... Is sensitive, fast, reliable performance, long service life. Diaphragm valve for operating temperature 0 °C ~ 90 °C water, ...