This TP796 VTTS is equivalent to Vacuum Toilet Test Stand (VTTS), PN 18000-001 (115V), or PN 18000-003 (220V). It is used for bench testing, troubleshooting, repair and calibration of various B737-600, B747-400, B757-200, B767-300, B777-200, and Airbus Vacuum Toilet Assemblies , more...