Texsteam Series 5000 Gas/Pneumatic Driven injection Pumps are positive displacement units powered by integral gas/air motor. These pumps fill the requirements of a broad range of applications because of their ability to achieve high discharge pressures  and wide volume ranges. A horizontal plunger and vertical check valve arrangement assure high operating efficiency. The standard pump head has a Ductile Iron body and stainless steel trim. Stainless steel heads are available for high corrosive applications. A built-in priming valve facilitates pump head priming, enables the operator to easily check pump operation, and offers a sample catching device.