Used by screwing to a 22x22 mm square PVC pipe. Because the nipple top is separable it is not suitable to be used with a Ø 26,7 mm round PVC pipe. Usage with a round pipe is only possible after custom production. Please contact us for such requests. Provides all the water requirements of the avian from day 1 to slaughter. No chick drinker are required alongside. Standard manufacture water passage values: 80 ml/ minute ( at 20 mbar)