EJ has developed a full line of composite infrastructure products designed for utility and municipal applications. Composite products from EJ are an innovative new material application that complements our broad range of access solutions. Composite manhole covers and frames offer exceptional performance in the most challenging environments. These new cover and frame solutions are built to be extremely rugged, offer lighter handling, reliable performance, and greater safety for end users.
Ergonomically Friendly - From an ergonomic perspective, composites are lighter in weight than their iron counterparts. Standard composite covers weigh between 28 lbs (22" clear opening) and 75 lbs (36" clear opening). For areas that are frequently accessed, the reduced weight improves the ease of access and increases overall worker safety.
Theft Deterrent - The scrap value of traditional manhole covers make them an easy target for theft. Composites natural defense against theft comes from the fact that there is little to no scrap value in the material, which makes it less than ideal for would-be thieves to steal. Additional locking options are available for security purposes.
Non-Conductive - Composite covers are non-conductive, which means they will not transfer stray electrical voltage to any surface. This makes them a safe choice for electrical utilities and municipalities that may have stray voltage concerns. Nonconductivity also means that the material greatly reduces the amount of heat that can transfer through the cover. This provides additional protection to pedestrians and utility workers and is a great fit for applications especially where pedestrians need to be protected from subsurface infrastructure.
Non-Corrosive - Sewer, storm, and wastewater environments can be highly corrosive. Covers made of composite material are non-corrosive, so the material won't break down or change when subjected to aggressive environments. This can apply to areas with exposure to sewer, hydrogen sulfide (H2S), petrochemical, gasoline, diesel, de-icing solutions, and salt water. Composites will remain structurally unchanged when exposed to the elements.
No Signal Interference - Composite covers are constructed of advanced fiberglass reinforced plastic materials that offer little interference with the wireless communication signals. This makes it a great candidate for applications where wireless monitoring is wanted or required. This is typically used in applications associated with water metering automation or electrical switching for smart grid technology.
Despite the unique characteristics of composite manhole covers and frames, there are a lot of similarities to traditional cast iron that make these products great alternatives for the right application. Composite covers have been proof load tested to AASHTO M306 and ASTM standards and are available in a variety of load ratings, from Light to Extra Heavy Duty, to meet your specification requirements. Composite covers will also accept any number of existing pick slot options, locking/security solutions, special lettering and logos commonly featured on traditional cast iron products. Composite manhole covers and frames are available throughout major markets in North and South America and are available in clear openings ranging from 22"-36".