Rodent nipple drinker is made of solid brass material with a stainless steel stem.  This model has a 3/16" barb connection for use with the Flex-Tube plumbing system. (The Valve Clip, is normally used to secure this valve to the wire cage). A great valve for rabbits and chinchillas and other larger rodents.

How it Works: To drink, animals simply move the stainless steel stem by biting or licking, releasing water. When the animal releases the end of the stem, the elasticity of the silicone rubber diaphragm located behind the stem head pushes the head back to the closed position, stopping the flow of water.