Workmen install one of the main lines in Albuquerque's vacuum sewer system. No trench boxes were needed and most of the installation occurred in the right of way without disrupting traffic.
Valve pit installation, using lightweight materials, requires minimal equipment and labor. Here, workmen lower a valve pit into place in preparation for connection to two nearby homes. Photos: AIRVAC
Ray Lawrence, maintenance specialist, with the Albuquerque Bernalillo County water utility authority, makes adjustments on a vacuum valve controller. The local utility received system operation and maintenance training from AIRVAC.