... per STD of BS, DIN,MSS Resilient Seated Gate Valve NRS Resilient Gate Valve comply with BS5163 Type A&B, DIN3352 OR ... /AWWA C508/DIN 2). Wafer Check Valve PN16 3). Dual check valve PN25/PN40 Ball Valve DIN/NF/MSS SP-72 Strainer: DIN ... -StrainerRubber Expansion Joint: Single,Double Sphere ,Double Sphere UnionAir Relief Valve:Single & Double Orifice 1).Size: DN40-DN600 2). PN10,PN16 ...