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HDPE Manhole Insert
Leaking manhole covers are a major contributor to rainfall induced inflow. Sewer evaluation studies indicate that a typical manhole
casting will allow an inflow rate from .20 to over 5 gallons per minute during rainfall occurrences. While the manhole cover is one
of the leading contributors to collections system I&I; ironically, it is the easiest and most cost-effective problem to remedy.
You can stop this unwanted inflow of rainwater through the manhole cover with the strong, durable No Flow Inflow dish. No Flow Inflow
manhole cover inserts are custom sized to provide an enhanced fit and seal, and are manufactured from ultra high density polyethylene
copolymer material known as Marlex HXM 50100. No Flow Inflow dishes can be inexpensively installed utilizing your "in-house"
collection system maintenance personnel.
Click here for HDPE Manhole Insert Brochure
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