Gate Valve manufacturer / supplier in China, offering Multi-Purpose Flange Adaptor for Di/Steel/PVC/PE/GRP Pipes, ISO2531/Bsen545 Certified, Blue Epoxy Coated Ductile Iron Flange Coupling for Water Distribution Systems, Quick Connect Flange Adapter DN40 DN50 with EPDM Seal, 16bar Working Pressure and so on.