Petersen Products Inc. manufactures hydrostatic test pumps including one pump series that features an output pressure range up to 10,000 psi or 25,000 psi, and is designed for hydro testing heat exchanger tubes, pipes, and pressure vessels. The company's other pump series is designed for pressure testing water lines and sewer force mains, and available with a 11HP engine and 35 GPM/290 psi.