Many Contractors find installing vacuum sewers much easier to install than traditional gravity sewers and low-pressure pumping systems.
Vacuum sewers are installed in shallow trenches and have an easy connection point at a property boundary for homeowners to connect up to. Gravity flow from a number of houses, usually between 2 and 6, depending on the flow rate from the property, flows to a collection pit.
The Collection Pit houses the vacuum valve which provides a pneumatic interface between the gravity side of the network and the vacuum, negative pressure, side of the network.
In older systems, concrete manholes were used as well as fibreglass collection pits. Both have had issues with I&I (Infiltration and Inflow) becoming an increasing problem. This has been picked up very well with Flovacs monitoring system.
The Flovac collection pit has been designed by operators and is built under ISo conditions to a standard for collection pits using PE materials.
Have a look around one of our collection pits recently being installed in Florida.
The first and most applauded by operators is the shut-off valve for testing and service work on the pit. As Flovac is a world leader in vacuum technology, this is now the standard in many countries. The shut-off valve is an essential tool to keep your team safe.
The vacuum stub out is welded to the side of the pit, eliminating inflow to the valve pit and ensuring alignment with the valve is 100% every time. Thus, reducing instillation errors and eliminating no-hub couplings coming off. Additionally, if the valve closes on water, creating a water hammer, all the energy is suppressed.
Flovac uses either H20 rated hinged or HDPE lids; both seal the valve pit from water getting in. Keeping the upper valve pit dry protects your valve and controller and eliminates operators from having to fish in stagnant water during serving. Additionally, the sump of the valve pit has a 30% larger holding capacity on average, which is just one of our design philosophies to ensure adequate response time during an emergency.
Lastly, the feedback we receive from contractors includes how easy the pit is to set and connect. With many more connection points, clock position is not an issue.
Hard to believe, but the highest praise from contractors is that our valve pit has lifting lugs, a crucial must-have.