Resilient Seated Gate Valve Butterfly Valve Body can be cast iron, ductile iron and carbon steel as per STD of BS, DIN,MSS Resilient Seated Gate Valve NRS Resilient Gate Valve comply with ... Joint: Single,Double Sphere ,Double Sphere UnionAir Relief Valve:Single & Double Orifice 1).Size: DN40-DN600 2). PN10,PN16,PN25 3). Seaworthy wooden ...