Vacuum Inlet Traps, Exhaust Traps, and Oil Filtration Systems from Mass-Vac, Inc. Mass-Vac, Inc. carries a complete line of vacuum inlet traps, exhaust traps, and oil filtration systems. Our signature product line, the MV MULTI-TRAP¬ provides unparalleled protection for pumps and exhaust lines. Here you'll find basic information on all our products and services as well as recommended applications, conversion tables, and industry links. Massvac.com~Site InfoWhoisTrace RouteRBL Check