Aqua level Masterflow A membrane-based valve system which maintains a constant water level. Water level valve has two inputs with internal ½” thread for horizontal and vertical water-carrying pipes respectively. The water level valve is supplied with a plug which can close off the inlet that is not in use. For optimal utilization, we recommend the following: • Water supply with filter • Water pressure of 2.0 - 2.5 bar/29 - 36 PSI • The supply pipe, i.e. the vertical water pipe from the water level valve to the trough must be 80-200 cm • Place the supply pipe as far from the feed drain as possible • Regular cleaning of the supply pipe to avoid water contamination