This is a galvanised steel poultry drinker. Easy to fill - simply turn the handle on the top of the dome, and twist anti-clockwise.
This splits the drinker into two pieces; the open cylinder part can then be filled like a bucket. Once filled, place the dome back on the cylinder and twist it shut
Reliable flow of water - as birds drink from the trough, more water trickles down from the cylinder and comes with a handle makes it easy to carry.
Designed to reduce spillage - flat base prevents it tipping over.