We supply all kinds of brass gate valve,zinc-alloy gate valve,the gate valve working medium: Water , Non Corrosive Liquid; gate valve material: have brass,zinc-alloy,bronze and so on.Gate valve nominal pressure: 1.6MPa with size: 1/2"-4"; brass gate valve thread standard: ISO228/ISO7.we also do the bronze gate vlave,flanged gate valve. The bronze gate have with NPT thread. flange gate valve size from 1/2" to 8" with stem stainless steel material.