1)Flange type silence check valve 2)Material:GG25 Size:2"~12" Inch ... &150,DIN1250,JIS 10K 4)Competitive price Name-FLANGE TYPE SILENCING CHECK VALVE/ Noise elimination Check valve(To prevent water reverse flow)Our ... minimize water hammer pressure,sealed performance is good,close no noise.Its advantages —Small volume, light weight, fluid small resistance, resistance ...