Storm Drain Check Valve

A check valve prevents seawater from backing up into drainage infrastructure to mitigate tidal flooding while still allowing the outfall to drain stormwater as usual when the tide recedes.

Storm drain check valve.

This document explains for homes connected to a municipal sewer we discuss how to prevent sewer or storm drain backups into a building during rain or heavy flooding including the installation and use of backflow preventers backwater valves check valves and toilet drain plugs. The duckbill concept check valve has been in use for over 100 years in waterworks and commonly accepted for use in industrial process piping systems and in waste and storm water or sewer piping systems. Foremost is the tideflex check valve with several different design and installation options available that allow the valve to be installed almost anywhere. Dual check valve with atmospheric vent prevents the reverse flow of hot or cold polluted water from entering into the potable water supply.

Once a sewer check valve closes there is no place for rainwater to escape if there is no outlet. Rf db rubber flex duckbill check valve brochure. Dual check valve with atmospheric this 1 2 in. When townsville queensland australia experienced king tides the low lying areas were being flooded by water backing up through the storm drains.

Tideflex check valves are ideal for stormwater pump stations because they are non mechanical have low headloss do not slam and have no problem discharging flow with entrained solids. This valve is designed for continuous pressure non health hazard applications in smaller supply lines such as laboratory equipment processing. If a property has a house sewer that accepts both sanitary and storm water a combined sewer system it must have an outlet for the rainwater. Red valve also offers pinch valves for influent flow control flood control pump stations and fish hatcheries.

In the wake of hurricane matthew much of the city s storm water infrastructure was in need of repair. If the sanitary and storm water flow are combined inside the building another issue arises. Sewer line backup prevention. However the king tides in january 2005 were held in check by the installation of tideflex check valves in various low lying areas.

The series 6200 heavy duty flap gate is designed to permit the outflow of water from a pipe or a structure to a body of water while preventing backflow of the same. Repairs following hurricane matthew.