Mini Float Valve Kit with Adjustable Arm for Ponds, Chickens, Aquariums, Aquaponics, Aquaculture, Hydroponics Tank Reservoir. Made of Tough, Precision PVC (1/4 NPT MALE) 1 mini Float Valve 1/2&#034; NPT Male connection <ul class="a-unordered-list a-vertical"> allows 1/2 vinyl tubing or water hose installation 1/4 QUICK CONNECT FITTING <ul class="a-unordered-list a-vertical"> allows1/4&#034; supply tube installation