Product Focus: Manhole Inspection and Rehabilitation

Product Focus: Manhole Inspection and Rehabilitation

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Chemical Grouts

Avanti International injection grouts

Infiltration enters underground systems every day through defects or faulty joints in manholes, causing system capacity issues, overload at treatment plants and possible injury to the community. Avanti International injection grouts have historically proven to be an economic and long-term solution to combating infiltration entering all areas of a collections system, including manholes. Injection grouts are engineered to stop leaks, stabilize soil and control groundwater, and be used in precast barrel joints, brick and concrete masonry units, pipe penetrations, vertical or horizontal cracks, void fill and pinholes. Each technique enables the technician to stop several leaks at once and helps to extend the life of the structure. 800-877-2570;


Infrastructure Repair Systems Infragard 

Infragard concrete and manhole rehabilitation products from Infrastructure Repair Systems include Top Coat and Chim-Coat, which are nonhazardous ambient-cure epoxy systems for a small patch, entire manhole or retaining wall. This cost-effective solution requires no expensive equipment as it has an easy trowel-on application. They are corrosion-resistant and high strength, with an impermeable structural bond to the substrate or to almost any concrete or metal surface. Chim-Coat is engineered with a flexible feature that maintains adhesion while expanding or contracting with changing temperatures and traffic loads. 877-327-4216;

Source One Environmental Quadex Structure Guard

Quadex Structure Guard, distributed by Source One Environmental, is a high-build epoxy coating formulated to provide long-term corrosion protection and structural enhancement for manholes, pump stations, treatment plants or any wastewater infrastructure subject to high levels of corrosion and/or abrasion in both municipal and industrial applications. It is also suitable for invert repairs. It can be trowel- and/or spray-applied, and is a 100% solids material with no VOCs and a fast set time. 877-450-3701;

Leak Location

InfoSense SL-DOG 

The Sewer Line Data OrGanizer (SL-DOG) from InfoSense includes a mobile app with a subscription to the SL-DOG ecosystem and is supported by both Android and iOS. It allows operators to enhance their field data in real time while conducting acoustic assessments. The data automatically syncs to the portal and helps build a comprehensive dataset to streamline and support the information generated by your Sewer Line Rapid Assessment Tool program. Users have five customizable user fields that can be used to track identifiable pipe characteristics such as a pipe segment number. The notes section can include observations, such as manhole condition, traffic levels or location hazards. The systems allow for easy export to common file formats like Excel, Google Earth or SHP. Hundreds of utilities use the app to enhance their SL-RAT measurements, allowing them to better streamline collections system maintenance operations. 877-747-3245;

Manhole Cameras


The CUES SPiDER allows technicians to inspect vertical structures in minutes, helping them make reliable repair decisions. It is flexible enough to inspect structures from 15 inches to 15 feet wide and up to 75 feet deep. It allows for a rapid inspection time with a nonstop rate of descent of 5 feet per minute. Its portable design eliminates excess hardware like cables and footage encoders. Its durable and waterproof solid aluminum design has been field-proven in over 250,000 inspections exhibiting minimal maintenance. The easy process can get the technician started inspecting in minutes out of the case. Lenient technology minimizes the rules to inspect and ensures assessments are done right the first time. Quality control tools are available to the field crew and office staff. It features automated data transfer from the field to the office, with accurate results with sub-inch 3D models and embedded GPS. It is compatible with all NASSCO-certified software. 800-327-7791;

Enz USA Camera Nozzle

The Enz USA Camera Nozzle has a modular design that allows universal use with all nozzle types, such as the eBomb or the eBulldog, and thus guarantees streak-free all-around cleaning in every application. The HD-ready resolution and 12 high-power LEDs deliver high-resolution video footage for quality control, documentation and preliminary inspection. Data management is fully integrated into the system through the Wi-Fi interface and connection to the Enz Cloud. All manholes and channels are automatically mapped on Google Maps with the videos. The nozzle, which is simple, fast and robust, increases productivity without any negative impact on the cleaning performance or quality. 877-369-8721;

Manhole Liners

Prime Resins PrimeCem MSM

PrimeCem MSM (Microsilica Mortar) from Prime Resins is a blend of Portland cement, graded silica sand, fibers and silica fume. The mortar may be hand- or spray-applied in a nominal thickness of 1/4 to 2 inches. Thicker applications can be achieved by applying it in successive lifts. Uses include repairing concrete walls, ceilings, lining brick or concrete manholes and lift stations, and horizontal pipe repair. Microsilica Mortar provides an extremely dense matrix and will accept coatings at earlier ages than typical Portland cement repair products. This product contains a migrating corrosion inhibitor. 800-321-7212;

Manhole Parts and Components

CCI Piping Systems WrapidSeal Manhole Encapsulation System

The WrapidSeal Manhole Encapsulation System from CCI Piping Systems consists of an engineered primer and a wraparound, heat-shrinkable sleeve designed to seal joints and prevent groundwater from entering a collections system. This material has a high-shrink membrane (70% stretch and 40% recovery) designed to shrink around any manhole profile. In addition, the high-tensile strength accommodates structural movement, while the tough backing resists soil stress and provides suitable abrasion resistance. It can be used for new construction or for the rehabilitation of existing manholes to control infiltration through joints and prevent deterioration, thus eliminating costly maintenance repairs and the added expense of treating groundwater. 800-867-2772;

Cherne Disc Seals

Disc Seals from Cherne are designed to block flow or provide bypass flow in underground pipes with low backpressure. Used for pipe construction, rehabilitation, cleaning and testing, the plugs can be separated into two halves to fit through any manhole effortlessly. They are built with two field-replaceable double bladders to ensure a leakproof seal. In addition to being built with lightweight, corrosion-resistant aluminum, the plugs come with handles for easy installation and transport. They are available in sizes ranging from 24 through 96 inches. 800-843-7584;

Cretex Specialty Products Internal Chimney Seal

Cretex Specialty Products Internal Chimney Seals are mechanical, so there is no need to worry about surface adhesion or stopping active leaks prior to installation. The seals eliminate and prevent manhole chimney inflow. During wet weather, clear water enters the manhole through deteriorated and broken chimney joints, which may burden the collections system. The chimney seal has a 50-year design life and is available in four widths, allowing complete chimney coverage up to 24 vertical inches with a single seal. 800-345-3764;

Mr. Manhole Cookie Cutter 

Using the Cookie Cutter system from Mr. Manhole, the contractor simply drills a 1.25-inch-diameter hole over the affected utility using the included battery-powered drill. They then cut a 74-inch “cookie” through asphalt or concrete in minutes with the cutter that mounts on a skid loader. The operator is protected from silica via the Mr. Mister included on the cutter. The cookie is lifted directly on a waiting truck via the lifter included in the package. A round personnel protection cage is placed in the excavation and vacuum excavating begins. The protective cage slides into place as the excavation is deepened and holds adjacent fill in place. The utility is exposed and repaired as needed. The system is complete with an engineering specification that includes backfill reinstatement guaranteeing a high-quality repair of the road. 833-242-2221;

USB-USA Spin-Jet

The Spin-Jet from USB-USA is a self-centering, controlled rotating nozzle that is used for cleaning lift stations, barrels and manholes prior to rehabilitation. Available in two different versions, it has driving nozzles that rotate in a 360-degree horizontal plane only. This action eliminates the need to cover the manhole during operation, allowing for constant viewing of the cleaning process. Front jets thoroughly clean any grease, sludge or mud at the bottom. 844-285-5770;


Oatey Hercules Shutout 

Hercules Shutout from Oatey seals and lubricates manhole covers to reduce inflow. It is a safe, job site-ready solution compatible with most manhole installations. It is designed to enhance existing seals by filling voids and defects within the manhole cover and seat. It creates a water barrier between surfaces, reducing the likelihood of corrosion and lubricating the manhole cover to allow for easier and safer removal. It is easy to transport and requires no measurements or pre-planning. It can be applied easily with minimal surface preparation. Monitor inflow to reapply as needed. 800-321-9532;

Sealing Systems Flex-Seal 2.0

Flex-Seal 2.0 from Sealing Systems is an all-purpose sealant that adheres to many surfaces and has over 800% elongation. It is designed to prevent inflow/infiltration and to provide corrosion protection at the grade adjustment ring section or joint section of manholes and catch basins. It’s 100% safe and Prop 65 compliant. The internal seal is manually applied using a paintbrush and the kit is designed to cover 12 vertical inches on a 27-inch-diameter manhole. 800-478-2054;

The Strong Company Strong-Seal System

The Strong-Seal System from The Strong Company offers a variety of cost-effective engineered cementitious products designed to rehabilitate municipal concrete and masonry structures and effectively stop inflow, infiltration and exfiltration. When spray-applied to a minimum of 1/2-inch thickness, the cementitious mortars are an impervious monolithic liner with compressive and flexural strengths exceeding that of the original structure. Both MS-2A and MS-2C are fiber-reinforced spray-applied cementitious mortars. Made with Portland cement, MS-2A is the most cost-effective solution for stopping infiltration and restoring structural integrity. MS-2C provides high early strengths and added corrosion protection in mild sulfide environments. High Performance Mix is a pure-fused calcium aluminate mortar that stops infiltration, restores structural integrity, and protects against microbiologically induced corrosion in sanitary sewer systems with harsh sulfide conditions (pH of 1.0 or greater). 800-982-8009;


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