Deflector panels and drop bowls are both used to reduce the amount of turbulence in the wet well. Turbulence can have several adverse affects on the lift station. First, unimpeded water, cascading down onto the pumps, can damage them over time. This is especially true with pump cables, which are normally mounted on the top of the pump. If the water breaks or interrupts the connections, power can be cut from the pumps. Cascading water …
When should a deflector panel be used instead of a drop bowl?
Romtec Utilities determines between a deflector panel and a drop bowl by looking at the inflow rate to the wet well. In most situations, inflow rates below 200 gpm can be handled by a drop bowl. When inflow rates are higher than 200 gpm, the drop bowl size required to catch the inflow encroaches on other elements in the wet well. Pulling out the pumps for maintenance is one such activity that limits the space …
What type of fall protection if provided for a manhole when the hatch is open?
Romtec Utilities typically designs lift stations with a bright orange safety grate built into the hatch. The two piece safety grate lies underneath the hatch doors as a secondary fall protection for the well. Lifting the safety grate is assisted with compression springs to alleviate most of the weight.
What is tape coat?
Tape coat is a material used to help seal pre-cast concrete barrel joints in manholes. Tape coat is applied around the outside of each barrel joint to prevent leakage at the joint connection. Tape coat is a cold applied, self-adhering tape that helps bond the joints together. Tape coat is used in conjunction with barrel gaskets and Conseal sealant to seal joints in concrete manhole structures supplied by Romtec Utilities. Additionally, the tape coat used …
What is Conseal?
Conseal is a sealant used to help seal the joint to joint connection of precast barrels in manhole structures and vaults. The Conseal used by Romtec Utilities is a butyl rubber sealant. This sealant is water tight and very resistant to shrinking, hardening, or oxidizing. Conseal is applied around the perimeter of the top joint’s lower lip on the lower barrel. A seal is formed when an upper barrel is stacked on top of a …