The purpose of a stormwater check valve is to prevent the backflow of stormwater into storm drains. In order to achieve this, the valve must be located out of the flow path. The valve must also open using positive gravity flow and should be made of all-rubber construction. This allows for minimal user maintenance and durability in submerged and weather-exposed areas. It should also operate without excessive head pressure.
Low slope design
For centuries, cities, towns, and farmers have been concerned about stopping back flow and preventing costly stormwater cleanup and reclamation after major flooding events. The traditional flap gate was the valve of choice, but it was problematic and prone to failure. The hinges would rust, the gates would jam, and they were sometimes stolen.
One solution is the low slope design of PROCO’s 711/731 ProFlex(tm) valves. They are designed to crack open at 1 to 2 inches of head pressure, avoiding the accumulation of water at the bottom of the valve. This prevents standing water and ensures reliable operation for 35 to 50 years.
Siphon-inducing mechanism
A siphon is a valve with a siphon-inducing mechanism that is designed to prevent overflow. It is often sold with a siphon pump, but it can also be used without one. However, stormwater check valve if the liquid source is not pure enough to create a siphon, the siphon may fail.
This mechanism works by causing liquid to flow uphill against gravity. Traditionally, the theory of siphons was that when liquid flows down, it reduces pressure at the top. This reduced pressure pushed the liquid from the lower reservoir to the upper one. But siphons can also operate under vacuum or to heights higher than the liquid’s barometric height.
Threaded regions 90
A check valve, which is a device for controlling the flow of stormwater, is an essential part of any stormwater system. It works by detecting backflow and restricting it before it reaches a sewer system. It functions by measuring flow velocity and a pressure differential. The cracking pressure is the minimum pressure needed to open a check valve.
In addition to preventing backflow, these devices are useful in mitigating flooding caused by stormwater and high tides. High tides often cause stormwater to enter storm drains and back up in low-lying areas, creating a nuisance. Tidal intrusion can damage plants and structures located near storm drains.
Inline design
The Tideflex CheckMate inline stormwater check valve design is an efficient and effective solution for stormwater backflow prevention. Its all-rubber design provides a tight seal and allows backflow to be prevented with low headloss. This design is particularly beneficial for low-lying areas. It is also corrosion-resistant and fail-proof.
The low-headloss in-line check valve offers passive flow without requiring modifications to the existing structures. Its design provides rapid dispersion of head pressures, which prevents upstream flooding.
HYDROVEX(tm) line of wet weather technologies
The HYDROVEX(tm) FLUIDGATE CONTROL VALVE is an adjustable PVC control gate that is designed to control flow. It is also used as an overflow weir and discharge throttling device. It also features the IHV EURO TYPE VORTEX VALVE, a static flow controller that helps control stormwater directly at the manhole.
HYDROVEX(tm) fluid sep vortex separator is an efficient and powerful stormwater overflow treatment tool that uses controlled vortex properties. This technology was developed by UFT, a German leader in CSO equipment development. The HYDROVEX(tm) FluidSep Vortex Separator features superior performance over existing vortex separators.