A Specification:DN50-DN150 ( GB )               DN50-DN600(DIN)               DN50-DN200 PN25(DIN) B Brief introduction to the product:    Handwheel drive;epoxy coating is applied on the flanged connection surface;the ductile iron valve plate is rubber-clad and beset with bronze nuts,and service life is long.The product is installed at ground pipeline,and is applicable to manual operations. C Materials Valve body:Cast iron or ductile iron,epoxy spray coating Valve cap:Cast iron or ductile iron,epoxy spray coating Valve disc:Ductile iron coated with EPDM or NBR Valve stem:2Cr13