Precise Flow Control
The CONTECH Vortex Valve is an exceptional solution to designers/engineers looking to precisely control the discharge flow rate from their drainage, storage attenuation, and soakaways / infiltration systems. The CONTECH Vortex Valve is a device for controlling surface stormwater flow by hydraulic effect without requiring moving parts.
The design of the CONTECH Vortex Valve produces a unique head / discharge relationship. The device self activates by utilizing the upstream hydraulic head. The unit consists of an intake, a volute and an outlet. Flow is directed tangentially into the volute to form a vortex that reduces the design peak discharge flow rate from the vortex valve far below an equivalent diameter simple orifice.
During low flow conditions, water entering through the inlet of the CONTECH Vortex Valve passes through the volute section of the valve with negligible pressure drop. During high flow conditions, a vortex flow pattern develops within the device creating an air filled core. This phenomenon restricts and throttles flow through the device, creating a back pressure in the device immediately upstream of its discharge.
During high flow rates, a CONTECH Vortex Valve with a relatively large outlet opening performs similarly to a conventional orifice with a much smaller outlet opening; however, debris that might clog a smaller orifice is able to pass through the CONTECH Vortex Valve because of the relatively larger flow path opening.
Benefits of the Vortex Valves:
- Precise flow control
- No moving parts or power requirements
- Self activating
- Stainless steel construction ensure durability
- Anti-clogging design significantly reduces clogging and maintenance
- Integral by-pass door allows access for cleaning
- Flexible design fits multiple applications
- Laboratory verified stage discharge curves provide predictable results
- Manufactured from corrosion resistant stainless steel construction