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F!V Fsooa& ILA PRECO. . ..IGHT SEWER GUARD SEWER TSYSTEMS THOROUGH MANHOLE COVERS.LE INSERT THAT INFLOW FROM ENTERING SANITARY DESCRIPTION: FEATURES: A polyethylene manhole insert for reducing sewage • TREATMENT COSTS REDUCED — Tests indi- treatment costs by preventing inflow. During a cloud- cate that the standard manhole cover which has pick- burst or steady downpour, storm water will enter a holes and other openings will allow an in-flow rate of 20 manhole through the cover at an inflow rate of 3.000 to to 75 gallons per minute when covered by just one inch 12,000 gallons every day. That rainwater inflow enter- of water. ing your sanitary sewer system must be treated. • MAINTENANCE COSTS REDUCED— Abrasive SEWER GUARD, which sits directly under the debris which would otherwise filter down into the. manhole cover. transforms the standard cover into a manhole is collected in the SEWER GUARD bowl, water tight unit. and is easily removed separately or with the insert. Since debris and stormwater do not get past the Consequently less maintenance is required. Less insert, the treatable residue in the manhole is minimal, time and money are expended in keeping the manhole and treatment costs are substantially reduced. in good operating condition. Quick and easy removal of the SEWER GUARD insert permits normal access to the manhole for maintenance or inspection. 2 • SYSTEM SURCHARGE MINIMIZED — Base- ..�.::: 4 ment Flooding may occur when there is excessive inflow through manhole cover openings. SEWER GUARD eliminates the excess flow, and increases the hydraulic efficiency of the sanitary sewer. C The cost of handling flood complaints resulting from excess inflow is minimized. 5 • INSTALLATION ALMOST EFFORTLESS - 1. The spring-loaded Gas Relief Valve is designed to SEWER GUARD is custom-sized to fit anv manhole relieve the gas pressure build-up. The yalye is automati_ frame and cover. and is shipped fully assembled. cally activated when the gas pressure differential in the The correctly sized insert is placed under the manhole reaches approximately V, psi. This prevents manhole cover, and rests on the same rim as the cover. dangerous accumulation of sewer gases by venting No special tools are needed and no other installation them throus,h the water, sand and debris collected in costs are involved, for either existing or newly con- structed manholes. the insert. 2. SEWER GUARD'S bwwl shape is specially de- • DESIGN PROVEN — Years of testing and improve- signed to protect the insert valves when the manhole nlent have resulted in a design linked to performance. coyer is removed. In addition, the shape also traps and The bowl shape (traps dirt, debris, and protects the holds dirt and debris. insert valves if the cover is flipped during removal):the 3. Made of specially formulated plastic polymers, the valves (vent and protect the system). the gasket insert will not corrode, and cannot be danla,ed by (properly seats and seals the insert): and the specially sewer eases or road oils. formulated plastic polymers (prevent corrosion and damage by sewer gases or road oils). 4. The closed-cell crosslinked polyethylene gasket. heat-welded under the lip, conforms to irregularities in • FOR EXISTING OR NEW CONSTRUCTION— the frame, and forms it ti_ht, virtually leakproof seal. The SEWER GUARD area is easily measured for 5. The spring-10aded Vacuum Relief Valve relieves custom suing of the insert. vacuum pressure build-up. This valve is artiy:ucd when For existing manholes, installation and sealing take the vacuum pressure differential ruches approximately no more than seconds. Simply remove the manhole cover, place the insert on the rim. and replace the cover. ,� psi. For new construction. SEWER GUARD may be Both valves(I and 5)arc self-cleallln__, and are mlade of specified at the same time as the manhole frames. an non-corrodible material. -fhev are also intended to be may be installed along with the covers Lit no addition used as handles for renlovim, the insert. labor cost. Toll Free: 800-645-3954 (Except New York State and Canada.