GROCO 4-Port Tank Selector Valve 1/2". 1/2" 4-Port Tank Selector Valve Specifications for GROCO 1/2" 4-Port Tank Selector Valve: Manufacturer: GROCO Color: Black Features of GROCO 1/2" 4-Port Tank Selector Valve For fuel or water Four Positions: Tank-1 Tank-2 Tanks 1 & 2 Off Full 1/2 flow Audible click at each handle position For thru panel mounting C83600 bronze construction Available separately or as part of TS-350-T Kit Package Contents: GROCO 1/2" 4-Port Tank Selector Valve GROCO FV-450-X: 4-Port Tank Selector Valve 1/2"