A.Y. McDonaldintroduces its DuraMAC booster-pump product line. The variable-speed boosters provide end users with a full line of booster-pump options, which include the company’s existing residential and commercial boosters. The new DuraMAC booster is a stainless-steel pump that speeds up and slows down based on system demand, maintains a constant pressure and is easy to install. The motor provides quiet operation at optimal working capacity. Call 800/292-2737 for further information on the variable-speed booster or the complete DuraMAC booster line.