The Fleck 2310 (60014) 3/8 inch brine safety shut off valve is used on the brine safety float inside of your brine tank.The Fleck 2310 (60014) 3/8 inch brine safety shut off valve is used on the brine safety float inside of your brine tank. This shut off valve is 3/8 inch compression by 3/8 inch compression and has the head hole for the float rod.