A float valve will help to keep the water at a consistent level so that it does not run low. With a 3 litre capacity the drinker is made from strong and durable polypropylene, which is designed to withstand knocks and harsh weather. It is unlikely to freeze in cold conditions, perfect for times when you are unable to get to the stable to ensure the water is drinkable. Made from durable polypropylene 3 litre capacity Easy to clean Includes float valve Plug in bottom for easy cleaning Made from Polypropylene. The Plastica Panaro Automatic Drinker will make a smart addition to your yard. A high quality polypropylene drinker with float valve 3 l. It handles up to 3 atmospheric pressure with 2.5 litre capacity per minute. It mounts to the wall (screws not included). Available in Green.