As one of the leading cast iron piston check valves manufacturers and suppliers in China and equipped with a productive factory,Website: , Shanghai Hugo Valve Co.,Ltd is always at your service.Cast iron piston check valvesDescription 1. Cast iron piston check valves can be called as piston non-return valves, lift type one-way valves, the function of piston check valves is to prevent the medium flow back and pump or electric actuator’s reversal.2. Cast iron piston check valves’ disc can be metal structure, also can inset rubber ring on the disc.Component 1BodyCast Iron / ductile iron2DiscCast Iron / ductile iron3BonnetCast Iron / ductile ironApplicable standard 1Face to face according to DIN 3202-F12Flange drill according to DIN2532/2533/EN10923Normal pressure : PN6/10/16Test  Working pressurePN10PN16Shell pressure1.5 Mpa2.4 MpaSeat pressure1.1 Mpa1.76 MpaDimensionsDN40506580100125150200250300L200230290310350400480600730850H95100115135145160180270320350D (PN10)150165185200220250285340395445D (PN16)150165185200220250285340405460