... ) Standards: AWWA, DIN3352 F4/F5, BS5163, BS51503) Connection type: flanged type, push-on type, mechanical joint type, plain ends type4) Material: a) Body : Ductile Iron ... : Stainless steel , BS970 431S29 or DIN17440x20Cr13 e) Gasket : NBR f) Bonnet : GGG500-7 g) O ring : NBR h) Washer : Carbon steel or ...