Steven Levy Enterprises buys and sells new, unused, and used surplus rotary lobe blowers and positive displacement blowers. Browse our inventory of used rotary lobe blowers and positive displacement blowers available for purchase. Rotary lobe blowers are used to provide air flow under pressure or vacuum conditions for industrial and commercial processes. Rotary lobe blowers use two parallel rotary pistons mounted within a housing that rotate in opposite directions. The pumped medium is sealed in the space between the rotors and housing. Positive displacement (PD) blower is used to move gas or air for a variety of applications. The blower utilizes positive displacement technology by trapping a certain volume of air then discharging or forcing it out against the system pressure. This air is usually forced into some type of pipe or hose to propel materials or gas to a destination. Tell us what surplus rotary lobe blowers and positive displacement blowers you have for sale or call us at 713-910-4337.