Pratt introduces the brand new AirPro Max air valve line. Our comprehensive air valve line features all ductile iron bodies and covers as well as 316 stainless steel floats and trim as standard. Pratt valves represent a long-term commitment to both the customer and to a tradition of product excellence. This commitment is evident in the number of innovations we have brought to the industries we serve. In fact, the Henry Pratt Company was the first to introduce many of the flow control products in use today, including the first rubber seated butterfly valve, one of the first nuclear N-Stamp valves, and the bonded seat butterfly valve.