Masport Vacuum/Pressure pumps are made with quality and dependability in mind. The H and HXL model pumps are equipped with heavy duty bearings and end thrust protection, which prevents the rotor from making contact with the end covers during operation. We also test run each pump at the factory to ensure that your pump will work when you put it into service. Each one of our pumps is also backed up with a one year warranty against all manufacturer defects.