MA type automatic mixers offer a working range of 1:10, from 4”-DN 100 up to 14”-DN 350 sizes and cover the flow rates from 216 l/min up to 25300 l/min. The main body consists of water inlet and foam outlet flanges with a primer nozzle and internal venturi cone similar to inline mixers. This equipment balance the foam concentrate pressure according to the water pressure passing through the equipment. The pressure relieved by external tubing transmits the pressure over a membrane inside the upper housing. The membrane travels according to pressure differences, and a stem connected to the membrane changes instantly the passage of the foam concentrate by providing accurate mixture. A calibrated foam concentrate orifice plate defines the nominal mixing ratio percentage. A mixing ratio selector according to the customer’s request is available and supplied as option. Carbon steel and Stainless steel AISI 304 and 316 materials are available on request.