New Town Vacuum System Canister Replacements

2026-11-03

1 . 0 Description . Valve pits shall be Hybrid PE valve pit packages as manufactured by Airvac . The nominal depth of valve pits ( 6 , 8 or 10 feet ) shall be ordered for each location as shown in table above ( see JSP B ) and brought to match the existing surrounding grade using concrete grade adjustment rings . The installation contractor shall purchase all vacuum valves , valve pits and associated equipment directly from the vacuum system manufacturer , with the exception of the gravity line stub - outs . Contractor shall be responsible for storage of all items . 2 . 0 Materials . All valve pit installations shall include the following components from the manufacturer : • Hybrid PE Valve Pit ( sump and pit cone ) • One - piece anti - buoyancy collar ( 1 - inch thick PE sheet ) • 3 ” Vacuum Valve • 3 ” pipe coupling • HP Controller • Suction and Sensor pipes • Factory - supplied rubber grommets for all pipe openings • Float assembly ( N . C . Float Cable w / M12 High Level Switch with Monitoring Cable for use with LoRa Montioring pit radio , Float Installation Fitting , ¾ ” NPT Cord Grip ) • 6 ” Air Terminal with mounting bracket • Traffic - rated cast iron frame and cover ( existing may be used if in good condition ) 3 . 0 Installation . Valve pits and appurtenances shall be installed per manufacturer ’ s instructions . 3 . 1 Lateral Connections . The Contractor is responsible for field - cutting holes and supplying the house gravity line stub - outs ( 4 ” or 6 ”, Contractor to verify existing lateral size ). This includes any pipe and fittings needed to align existing laterals to the valve pit sump openings . All pipe and fittings must be Schedule 40 or SDR 21 pressure rated PVC . Correction of misalignment with flexible couplings , such as those by Fernco , will only be allowed in certain cases with approval of the City . Factory - supplied grommets must be used for pipe connections into the sump . Airvac grommets are designed to accept Schedule 40 or SDR 21 pressure rated PVC pipe . The end that passes through the grommet must be beveled and shall not protrude inside the valve pit more than 4 ” +/- 1 / 8 ”.

Missouri

2026-04-29