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The Wolverine Brand® Plastic Manhole Inflow Protector Inserts are made of high density polyethylene and have been proven effective in reducing or preventing surface water inflow to the collection system, through the manhole lid. Operating and maintenance costs for plant equipment and pumps are minimized due to reduced flow during heavy rainfall. Also, utility costs are reduced because machinery is not operating for extended periods of time. These inserts are a practical solution to expensive plant expansions, new construction moratoriums or inflationary sewage treatment costs. |
PLEASE READ BEFORE ORDERING Our inflow protectors and manhole odor inserts are custom made to order based upon four required dimensions. As such, all sales are final. Below you will find a diagram (also available on our downloadable Measurement Sheet) that shows you the numbers we need to receive from you to complete your order. If you call us to order, a signed copy of the measurement sheet will be required to be sent to us either via fax (973-858-0219) or by using our contact form. We're happy to assist you in getting the correct measurements. Looking at the lid diagram below, you will notice that the first graphic represents the width and depth of the drop ring under the lid. IF you have a flat lid (nothing extending below the lid) you should write "flat lid" for the A and B measurement.
In the image below you will see the opening of the manhole. You will need the Outside Diameter (not the lid width) of the opening and the Inside Diameter of the opening. If you have a drop ring as indicated above, your A measurement can not be larger than your ID.
Please refer to the chart below for help in selecting the correct lid type from the radio buttons below.
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Scroll below "Add to Cart" for more product specifications...
- GUARANTEED for THREE years against manufacturing defects
- NO VALVE method of ventilation available
- Single or double valve ventilation system available
- NO corrosive parts
- Easy installation and removal
- Requires no maintenance
- Controls sewer odors in residential areas
- Keeps grit, sand, salt, chemical spills, foreign objects, road oils, etc. from entering collection systems
- Cost-effective alternative to replacing existing manhole covers with "water-tight" covers
- Dramatically reduce sewage treatment costs
- Deep and shallow bowl designs available
Physical Properties
The Wolverine Brand® Plastic Manhole Inflow Protector Inserts are manufactured from High Density Polyethylene, meeting the requirements of ASTM D-1248, Class A, Category 5, with a finish thickness of 1/8". Ventilation is achieved by either the thru-bore, single or double valve methods. A nylon strap is factory installed to make removal of the unit a simple, one person operation. Factory installed closed-cell neoprene or cross-linked polyethylene gasket is available upon request.
Installation
No special tools are required to install The Wolverine Brand Plastic Manhole Inflow Insert. Just remove the manhole cover and clean the rim of the frame. Place the Wolverine Brand Plastic Manhole Inflow Insert on the manhole frame rim and replace the manhole cover .