... 10 years,1000pcs per week,sanitary stainless steel check valve Features:sanitary stainless steel check valve1)Material :SS304,304L,316,316L2)Size:DN25 ... )Applications: dairy,beer,food,beverage,pharmacy,biotechnology, etc.6)connnection type:welded,clamped,flanged,threaded sanitary stainless steel check valve