1.Brass Holding Ring Resilient Gate Valve New type DIN3352 F4 2.guarantee the quality 3.give you ... BS5163,DIN3352-F4,F5,AWWA C509 and socket end resilient gate valve, BS750 Hydrant, BS5153(L/W)copper seal swing ... check valve, BS5163 copper seal gate valve, BS5152 copper seal globe valve and cast iron ... , Taiwan and so on. Brass Holding Ring Resilient Gate Valve New type DIN3352 F4