Swing Check Valve Double Flange Duct Iron Large Size

Product DescriptionMain structure  and  their materials :Bady /Cover  Material:QT500-7,GGG50 with internal and external epoxy resin coatingDisc  Material:GGG50 with NBR,EPDMFlange washer      Material:NBR,EPDM,FPMTechnical data:Design standard: AWWA C508Flange standard: EN1092-2/GB17241.6  Face to face dim:EN5752 serie10/GB12221 Testing standard: EN1074-2/EN12266-1/GB13927 Body: GGG50/GJS500-7 Sealing: Rubber  DN: 50~600 PN:1.6Mpa  Working temp.: NBR ≤80ºC/EPDM≤120ºC  Drive Mode: Damper Connecting:Flange Coating: EpoxySwing check valveFeatures:The discs tightly cover the rubber with no iron exposed.The media are pledged clear and pure.The rubber-coating layer of the discs is added with durable nylon cord fabrics and soft mental cord fabrics,which greatly improves the discs' capacities of enduring flexing and stretch when unlocked or closed,meanwhile,prolongs service life.   When in the state of closedness,the discs form a certain angle with the flowing direction.   The through-holes of the base and the discs are all oval while the flowing channel is straight-through.Therefore,the closed angle is relatively small,which decreases phenomenas of the water hammer, as a result,effectively secures the valve.Application:The two kinds of valves are widely used in heating systems and industrial water supply and drainage systems Detailed Photos   /* 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