When used in line with a rotary vane or small diffusion
pump, complete trapping of water vapor, solvents and other condensable gases is
achieved, as well as a lower base vacuum.
These traps have also been used on diffusion pumping systems to minimize
oil vapor migration from the roughing pump to the diffusion pump. The primary use though, is as a fore line trap for getting condensable vapors out of the gas stream so they do not enter
the vacuum pump and degrade the fore line pressure of the pump through
It is important when using these traps to maintain the level
of the liquid nitrogen at the correct level in the trap.
The HyVac LN2 traps come with a number of nice features. Demountable liquid nitrogen reservoir for
easy cleaning, 3 point support brackets, NW16 option port, electro-polished ID
and OD 304 stainless steel construction. Trapping Temperature to
-187 Degree F.
The 1 Liter Trap lasts roughly 12 hours. The 2 Liter about 20 hrs when run at 0-50
micron. Higher pressure operation
decrease life span of LN2 charge. These
are provided as a rough rule of thumb and are not exact.