Manhole Inflow Insert Dish

Our Premium Polyethylene Manhole Inflow Insert Dish is specifically designed to enhance the efficiency and longevity of your wastewater collection and treatment systems by reducing surface water inflow through the manhole lid. Easy to install and requiring virtually no maintenance, these robust inserts also protect your collection system from sticks, stones, grit, chemical spills and road oils while minimizing operational and utility costs.

If venting is required two 3/16" holes can be drilled 180 degrees apart  approximately 1" from the top of the insert. This "no-valve" method of ventilation is normally unaffected by grit accumulation and has no moving parts subject to wear and/or corrosion. The no-valve method of ventilation allows not more that 5 gallons per day of infiltration thru the manhole lid.

Key Features of these manhole inserts include:

• Manufactured from High-Density, High Molecular Weight Polyethylene, meeting ASTM D1248, Class A, Category 5 standards, with a finish thickness of 1/8” for robust performance.
• Equipped with a corrosion-resistant 1” heavy-weight polypropylene strap for effortless removal – a simple, one-person operation.
• Sewage collection system ventilation can be achieved with optional single or double valve methods or drilling (2) 3/16" diameter holes.
• Non-corrosive components enhance durability and longevity.
• Straightforward installation – no special tools needed. Simply clean the manhole rim, place the insert, and replace the cover.
• Effective reduction of sewage treatment costs, thanks to reduced surface water inflow.
• Shields collection systems from grit, sand, salt, chemical spills, and other foreign materials.
  
• Prevents kids from dropping sticks, stones, etc into manholes
• Offers a cost-effective alternative to water-tight manhole cover replacement.

Safeguard your collection system with a manhole inflow insert dish

Installation is a breeze; no special tools are needed. Simply remove the existing manhole cover, clean the frame rim, place the insert onto the rim, and then replace the manhole cover. You can easily safeguard your collection system, all while saving on maintenance and treatment costs, with our Premium Polyethylene Manhole Inflow Insert Dish.