GROCO 4-Way Tank Selector Kit 1/2". The Groco Grommet TS-350 is a 1/2" female hose barb that routes pump flow in one direction only while pump flow is in the opposite direction. For proper functioning the first priority is to make sure the pump is in the OFF position. The second priority is to keep the pump in the OFF position to allow for priming and refueling to take place. The Groco TS-350 4-Way Tank Selector Kit has four positions that can be achieved with a simple rotation of the handle. Each position has an audible click so you know you can make it to the next one. With this fitting you can manage your boat's fuel and water flow in any combination you want. The Groco TS-350 4-Way Tank Selector Kit is a prime example of how GROCO treats its customers. Groco uses C83600 bronze construction for excellent quality and long-lasting durability. Includes hose barbs for 1/4" to 1/2" hose and fittings for fuel or water. You can purchase this GROCO Grommet separately or as part of TS-350-T Kit. Specifications for GROCO 1/2" 4-Way Tank Selector Kit: Manufacturer: GROCO Color: Black Features of GROCO 1/2" 4-Way Tank Selector Kit 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-Way Tank Selector Kit GROCO TS-350-T: 4-Way Tank Selector Kit 1/2"