Package of 5 drink cups. Drinking cups require a source of water at a pressure below 5 lbs PSI which is provided by a pressure reducing valve, or by gravity tanks or buckets. These cups have a spring loaded trigger stem for positive shut off of water. Water flows only when the birds beak is in the cup. Designed to screw on #4087 and attached to a PVC pipe with low pressure water.
Click on the Video Tab for instructions for the Self Cleaning Drink Cup.