... JIS,JB,GB TypeProduct6mm-2000mm Foot Valve Intake in Water ProjectValve,Foot valve,Bottom valve,Flush bottom valvesSize6mm ... 2G1StandardAPI,ANSI,BS,DIN,NF,JIS,JB,GBApplicationwater, oil,air ,steam,etc Bottom valve is an energy ... -saving valve,which is usually installed in the pump suction at the bottom of ... on the bonnet to prevent jam.Mainly used in pump pipe.The caliber has three types: single ...