MV Products
Remove contaminants with these vacuum-pump inlet traps
The MV PosiTrap 
Vacuum Inlet Traps (photo) are made of stainless steel and are positively sealed at both ends to prevent “blow by” and protect vacuum pump fluids from acids, organic vapors, particulate matter and water vapor. Featuring a selection of filter elements, these traps are ideal for OEMs and end-users of gas analyzers, mass spectrometers and scanning electron microscopes to prevent the buildup of contaminants in the oil of roughing vacuum pumps. Available in 4- and 8-in. dia. straight-through and right-angle models that hold one and four filter elements each, MV PosiTrap Vacuum Inlet Traps can be changed in-line. — MV Products, a Division of Mass-Vac, Inc., Billerica, Mass.