... 3,Ceramic Plate,Rubber Oring 3.Life span:500000times Slow Open Brass CartridgeCeramic Cartridge,brass valve core,sanitary fittings,head ... work,ceramic discfast open, Italy, 65g, ceramic disc, brass fitting, brass valve core, ... 0.05Mpa Dynamic pressure 0.3Mpa Life test 500,000 open and close cyclesâ—ŠCeramics Technique requestment of ceramics Sealing ...