● Independent motor,heavy duty work,with high ultimate vacuum 0.04Pa
● With integral structure pump body,more stable in ultimate vacuum,,longer work life,faster flow rate.
● With gas ballast valve to separate the vapor from the gas,so as to ensure the purity and prolonged the use of the pump oil.
● Internal intake check valve prevents oil backup into the system during a power failure
● American standard,High quality,industrial designed for the serious air conditioning&refrigeration technician area and high vacuum field.