... DIN3352 F4/F5,AWWAgate valve Features:1) Product information: the gate valves supplied are mainly used for adjusting water, steam, oil, gas ... BS51503) Connection type: flanged type, push-on type, mechanical joint type, plain ends type4) Material: a) Body : Ductile Iron GGG500-7 b) Wedge : D ... /I , core fully vulcanized with NBR or EPDM rubber c) Wedge Nut : Brass d) Stem : Stainless steel , BS970 431S29 ...