Designed to test the vacuum retention and structural integrity of hard suction hose per NFPA 1962. It comes with several couplings for compatibility with different sizes of hard suction hose. The Portable Vacuum Tester has been engineered specifically for air conditioning and refrigeration service, and is built for fast, thorough evacuation. Two-stage rotary vane design provides powerful, quiet, high vacuum capability and ensures moisture removal, while the high pumping capacity reduces evacuation time. The intake screen prevents foreign matter from entering the pumping chamber, and an internal exhaust filter separates oil vapor from the exhaust flow. The one-piece, molded handle makes it easy to carry the pump, and the handle stays cool to the touch during operation. Aluminum housing and rotary vanes keep the pump weight low. [embed:render:full:node:641]