Double-bagging techniques have a complex history. In the 1980s and 90s, the Naval Air Warfare Center, Aircraft Division in Warminster, Pennsylvania (NAWCADWAR) published papers on a Double Vacuum ...

LYNDHURST, N.J. — Navac, a supplier of HVAC vacuum pumps in addition to a wide array of tools, gauges, charging machines, recovery units, and other industry-specific items, has introduced the a ...

NAVAC’s new NP12DM Vacuum Pump features an industrial-grade design for a rare blend of robustness, speed and power. Its brushless DC-motor technology maintains peak efficiency while yielding a ...

We may receive a commission on purchases made from links. HVAC professionals need a good vacuum pump to evacuate air, moisture, and contaminants from refrigerant lines before recharging older systems ...