BACK  AUTOMATIC VACUUM SERVICE BYPASS VACUUM ACTUATOR VALVE PICKING UP SERVICE FLOW FROM FLOOR DRAIN WEIGHS ABOUT 8 LBS. NO ELECTRICAL CONNECTION REQUIRED FAST RESPONSE. QUICK TO INSTALL. QUIET. SUPERIOR TO PUMPS. Paper on Full Service Vacuum Bypass system presented at NAST No-Dig 2000 System was used on major CIPP lining project and has been used since on other lining projects