Steven Levy Enterprises buys and sells new, unused, and used industrial surplus triplex pumps, duplex pumps, plunger pumps and piston type pumps. Browse our inventory of used triplex pumps, duplex pumps, plunger pumps and piston type pumps available for purchase. Triplex pumps are used to move both thin liquids (such as water) and viscous fluids (such as oil). Duplex pump consists of two pumps that alternate the pumping process, thereby allowing it to be more efficient than a single version. A plunger pump is a type of positive displacement pump where the high-pressure seal is stationary and a smooth cylindrical plunger slides through the seal. A piston pump operates where the high-pressure seal reciprocates with the piston and can be used to move liquids or compress gases over a wide range of pressures. Tell us what surplus triplex, duplex, plunger and piston type pumps you have for sale or call us at 713-910-4337.