The HDPE Inflow Defender®, inflow dish was designed to significantly prevent rain/stormwater from entering the sanitary sewer system through the manhole cover and upper frame area. The HDPE Inflow Defender® inflow dish is part of Utility Sealing Services complete “AIIM” Annual Inflow & Infiltration Maintenance Program.
• Neoprene gasket
• Effectively blocks abrasive debris
• Eliminates excess flow
• Fully assembled - no special tools required
• High-density polyethylene
• Molded structural ribs
• Optional SS 316 eyebolt hardware
• Custom logos on orders of 100 or more
• Reduces maintenance costs
• Eliminates motor run-time spikes, significantly reduces sewerage treatment costs
• Custom sized - installs quickly and easily to prevent dish from falling into manhole
• Impact resistant; long lasting; resists heat and cold
• Made in the USA
The following ring/covers are not candidates for inflow dishes:
1) Remove the manhole cover
2) Clean the manhole flange area of dirt and debris to ensure accurate measurement
3) Locate manhole frame Inside Diameter (ID)and measure across ID with a minimum of two dimensional readings for accuracy-record the smallest measurement to the nearest 1/8"
4) Locate manhole frame Outside Diameter (OD) and measure across OD with a minimum of two dimensional readings for accuracy-record the smallest measurement to the nearest 1/8".
USSI HDPE Inflow Defender (pdf)
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