The 15D next-generation miniature diaphragm series pump is quiet (down to 45 dBa), incorporates oversized ball bearings to reduce maintenance, and has a flow-enhanced design that increases performance, says the manufacturer. The single-head-style ac motor can develop pressure up to 35 psi, vacuum to 24-in. Hg, with an open flow of 10 lpm for custom applications. The twin-head version can achieve 27 psi, 27-in. Hg, with open flow to 19 lpm. Ac and dc motors are available.

Gast Manufacturing, Inc., a unit of IDEX Corp., P.O. Box 97, Benton Harbor, MI 49023-0097; 616-926-6171; 800-771-8349 (fax); (Web site).