Rising Main
Rising Main is a synonym for Pressure Main. Although water pressure mains are sometimes referred to as rising mains, the term is most commonly used when referring to a sewer pressure main.
The most common pipe materials used for sewer rising mains are:
- Ductile Iron Cement Lined (DICL)
- PVC-M
- PVC-U
- PVC-O
- Glass Reinforced Plastic (GRP)
Whatever pipe material is selected for use in rising mains, it must have the capability to withstand pressure surges due to pump starts and water hammer.