Pump: Used for a few jobs and no longer need. Designed for servicing automotive air conditioning, this two-stage vacuum pump pulls vacuum down to 22.5 microns. Precision machined two-stage pump removes moisture from air conditioning systems to safely add refrigerant. This two stage vacuum pump is ideal for automotive air conditioning and other operations that require steady vacuum pull from a compact pump. Look on Google to find the owners manual readily available. BVV chamber: Benefits: • Removes residual solvent to low ppm • Even, efficient heating in chamber • Holds full vacuum for 24 hour+ Includes: • aluminum vacuum chamber • 5ft HVAC hose (not pictured) • 50 micron air filter Technical Specs: • Vacuum Range: -30 – 0  inHg • Ultimate Vacuum: <500 µmHg / mTorr / micron Gage leaks slightly.