WHAT IS A CHECK VALVE AND WHY IS IT USEFUL?
Check valves are used in all stormwater and wastewater systems. They allow the forward flow of fluids before closing to prevent backflow conditions. These valves come in a variety of diameters and designs, including ball, swing, diaphragm and duckbill check valves. They are simply designed, passive flow devices that rely on flow velocity and pressure to open and close without and manual or automated assistance.
Properly designed and operating check valves prevent flooding and standing water, control back pressure from wastewater treatment plants and outfalls, and ensure water flows through piping in the correct direction.
THE PROBLEM OF STANDING WATER
Poorly controlled stormwater or backflowing sewage, results in flooding and/or standing water. Faulty check valves that are rusted open or jammed with debris will contribute to the problem. Water may also accumulate at the bottom of some types of check valves.
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Proco Products, Inc. would like to introduce the newest addition to the ProFlex™ line of Rubber Duckbill Check Valves – the newly engineered, low headloss Style 790 check valve, the only assurance to ZERO backflow.
Where other products have failed in design and performance, Proco has spent countless hours in the engineering and design stages to ensure that the Style 790 will be your last and only requirement for a Low Headloss Inline Check Valve.The Style 790 check valve is the elastomeric valve of choice for municipalities, airport runway runoffs, railway washouts, highway flood damage prevention and odor control.
The 790’s unique design provides rapid dispersion of head pressures and with its low cracking pressure, it prevents upstream flooding.The inline design of the Style 790 check valve allows the valve to be installed without having to do any modifications to existing structures or costly pre-install planning.
The unique fold away design of the inner sleeve also allows for a near full port flow, allowing for quick drainage.The Style 790 will allow for passive flow operation making it the perfect fit for:Combined Sewer Overflows (CSO’s) – A combined sewer is a sewage collection systems of pipe and tunnels designed to also collect surface runoff.
Combined sewers can cause serious water pollution problems during combined sewer overflow (CSO) events when wet weather flows exceed the sewage treatment plant capacity.Sanitary Sewer Overflow – A condition in which untreated sewage is discharged from a sanitary sewer into the environment prior to reaching sewage treatment facilities.Outfalls – An outfall is the discharge point of a waste stream into a body of water; alternatively, it may be the outlet of a river, drain or a sewer where it discharges into a body of water.Some additional features of this valve are:Backflow prevention25-30 years life expectancyAvailable in many elastomers, making the valve compatible with virtually all weather & service conditionsNeoprene elastomer offered with algae and barnacle resistant compoundInternal expanding clamps available in 304 ss, 316 ss or carbon steelContact a Proco representative today to learn more about this exciting new addition to our ProFlex™ Series 700 Check Valve product line.
