The PV750 rotary vane pump from Presvac Systems is designed for continuous full vacuum operation in extreme conditions. It provides 400 cfm free air, and 350 cfm at 15 inches Hg, a maximum vacuum 27 inches Hg and maximum pressure of 35 psi. Dual fans and twin ballast ports cool the pump. The solid housing with deep cooling ribs allows for greater heat transfer from the vacuum chamber. Aluminum fans and shrouding further aid in heat reduction. Multiple manifold and drive options are available. 800/387-7763; www.presvac.com.