... Initial cost, space and pipe support element installation. The Dual Plate, Wafer Check Valve employs two-spring-loaded plates ... R.F or RTJ, Wafer, Fully Lugged and GroovedHot tags: Dual Plate Check Valve, China manufacturer, factory, mill, supplier, cheapFull ... Weight, Versatile Design, and 80 to 90% lighter then conventional full body check valve. Reduces pipe supports, simplifies piping, easier, ...