Is designed for pressure, suction and gas circulating applications. The convoluted diaphragm and the unique pump cavity are designed to provide extended diaphragm life by minimizing stress, wear and heat buildup. This is done while ensuring and optimizing pressure and vacuum characteristics.Air capacity: 1050 cubic inch per min. Maximum suction: 20 inches Hg. Motor: 1/45 hp at 1550 rpm. Electrical: 115v 60Hz 1.5 Amp.