Ecodos Hygienic Diaphragm Pumps feature hermetically tight, sealless construction with smooth internals and a low pump head volume to assure that wetted parts and product contact areas meet 3A sanitary standards. Providing ±1 percent or better metering accuracy, these pumps utilize a four-layer mechanically-actuated diaphragm with pressure switches to automatically detect a perforation, signal an alarm, and shut down the motor. American Lewa, Inc., 132 Hopping Brook Rd., Holliston, MA 01746. Tel. (888) LEWA123; fax (508) 429-8615;