FEATURES:BSP Thread connectionsA Non return valve for liquid with solids in suspension..A brass flap closes when the flow from the pump stops and seals the valve.It is rugged designed with full free flow type with swivel disc, screw-in cap and solid disc.It can function properly in either horizontal or vertical position and also suitable for both clear or dirty water and non-aggressive medium.The valves are applicable for Building Services, Plumbing System, Fire-Fighting System, Air-Conditioning System, Hot Water System and General IndustrySPECIFICATION:Material: Fibre Cap Gasket/Metal Seat Female Screw End B.S.P ThreadedColor: GoldType: Check ValveSize:- 1/2" INCH- 3/4" INCH- 1" INCH- 1 1/2" INCH- 2" INCHPACKAGE INCLUDE:1pcs x Swing Checker ValveNOTE:1. Please allow a bit error due to manual measurement. please make sure you do not mind before you bid.2. The color may have different as the difference display.