Vacuum leaks manifest themselves differently than line leaks from compressed air systems. Audible noise, bubble testing and sometimes smells are common for pressurized systems but none of these tactics work for vacuum leaks. Vacuum leaks can result from physical holes in structures, contaminated seals or even gases that emit from the vessel walls.
In years past, industrial vacuum pumps were known for their loud operation, substantial amount of oil carryover, and large energy costs. No longer! Significant developments in vacuum pump technology have resulted in advances in the energy usage, reliability, noise levels, and overall performance of these machines.