Kaufmann Umwelttechnik GmbH Flienkenstrasse 5 , Wehr , 79664 Germany About Solutions products Companies Kaufmann Umwelttechnik GmbH Products Automatic Air Vent Valve EK50 Automatic Air Vent Valve EK50 0 Share A float opens or closes the valve nozzle,dependent on the water level. After a short transcient period the valve keeps gas flow and water level constantly. Most popular related searches automatic waterer valve Customer reviews No reviews were found for Automatic Air Vent Valve EK50. Be the first to review! Add your review Publish your review Great! review successfully added!