1.This chicken drip watering system water fountain is suitable for the chicken farm, can effectively save the trouble of artificial feed. 2.This type poultry plastic nipple drinker drip watering system can be directly install on 1/2'' or 3/4'' PVC round pipe. 3.The chicken drip watering system clip pipe of ball valve chicken drinker adopts pp material, machine core made of abs material, needles and built-in device is one of the best 304 stainless steel material. Features · Ideal for broilers, breeders, layers, pullets, ducks and game birds · Manufacturer recommends 3 birds per nipple · Does not require a drip cup · Screw directly into PVC pipe, or use reducing tees with Teflon tape for round PVC pipe · Delrin body, 360° side-action pin · Working pressure should be reduced to under 1 PSI · Best installed vertically Specifications · Screw Size: 11/32" · Pilot Hole Drill Bit Size: 5/16" · NPT (National Pipe Thread Taper): 1/8" · 360 degree stainless steel nipple · Weight: 8.5 grams per assembled nipple · Color: Red