OS&Y Gate Valve for Firefighting

OS&Y Gate Valve with Supervisory Tamper Switch is mainly used in fire-fighting system, with red color.People can Recognize Gate Valve is open or closed condition through the Rising Stem in a far distance.1- Body/Bonnet:GGG40/502- Stem:SS420/4313- Bolts/Nuts:SS3044- Wedge:GGG40/50 + EPDM Coating5- Epoxy Resin coating internal & external, thickness above 300 micron6- Flange or Socket Or Groove Ended7- Work pressure:PN10/16;Size range:1", 1 1/2", 2" to 24"8- Design Standard:DIN F4/F5, BS5163, AS2638.29- Operate:HandwheelWalter-FSV Company can supply OEM service for OS&Y Gate Valve, Flange Butterfly Valve, Wafer Butterfly Valve, Swing Disc Check Valve, Silent Check Valve, pressure reducing valve, float control valve.Etc...Welcome your enquiry for more details./* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1