AAUTOMATIC POULTRY/CHICKEN/DUCK CAGE/FENCE DRINKER A very practical automatic drinker for poultry. This drinker is, as all automatic drinkers for poultry, only suitable to be used at low pressure. This means that the water level has to be at a maximal height of 2 meters. Connecting this drinker directly to the service pipe is not suitable. You can obtain low pressure by using a small barrel 9mm hose will be required