Tideflex rubber duckbill check valves are excellent replacements for the metal flap gate valves. Tideflex duckbill valves will not warp or freeze and are virtually maintenance free. They will handle large obstructions without jamming, and there is no gate to hang open. 

The flat-bottom design of the TF-1 allows it to be installed without any modifications to existing structures.

Brochure
Series 37G Slip-inside Valves Brochure 
Series 37 Flanged InLine Valves Brochure 
Headwall Mount 
Presentation: Outfall Check Valves 
Video 
Headloss Charts
Application Data Sheet
Sample Tender Specifications
3 years Warranty 
FAQ
Tideflex Advantage!
Tideflex - Water Storage / Distribution / Treatment
Tideflex - Wastewater Treatment
Performance Benefits
Press Release: The Wide Bill Diffusers - lower headloss
Press Release: The Alternative to Flap Valves

Reference List - Ireland
Project: Savannah, USA
Project: Buenos Aires (13pcs. of 90 inch Tideflex Valves)
Project: Dun Laoghaire
Project: Sandymount
Project: Galway
Application: Flow Measurement in Diffuser System
Application: Power - cooling 

see also: Stormwater flow regulators

The new Tideflex  CheckMate Inline Rubber Duckbill Check Valve is ideal for backflow prevention and mitigation of odors. 

In outfalls, stormwater, CSO and SSO applications, the CheckMate’s™ custom-engineered design eliminates costly backflow from seas, rivers and interceptors.

CheckMate™ Rubber Duckbill Valves have very low headloss, which is especially beneficial in low laying areas.

The Tideflex CheckMate™ Inline Rubber Duckbill Check Valve’s 100% fabric and elastomer construction eliminates corrosion problems. Because the CheckMate™ is made with a unibody construction, there are no components to catch debris, corrode or fail.

Brochure
Headloss Charts

The Tideflex Mixing System (TMS) improves overall water quality within finished water storage reservoirs by eliminating stagnation and stratification.

By filling and draining from opposite sides of a tank, the TMS ensures that all water is continually cycled. This eliminates the ‘last in, first out‘ problem experienced by most reservoirs which use a common inlet/outlet point.

Brochure
Application Data Sheet
Tideflex Advantage!
Tideflex - Water Storage / Distribution / Treatment
Physical Modeling of Mixing in Water Storage Tanks
Press Release: TMS Improves Water Quality by Complete Mixing
Project: Mixing System in a Tank to Improve Water Quality
Project: Mixing System Eliminates Short Circuiting in Circular Reservoir
Project: Mixing System eliminates water stagnation in finished water storage facilities 
White Paper: Preserving Water Quality in Distribution Systems 

Tank inlets - examples of water mixing and stratification in:
Elevated Reservoirs
Standpipes 

see also: Waterflex check valves 

The Tideflex Aeration & Mixing System has been designed to provide enhanced mixing and oxygen transfer through gas diffusion technology.  

The two major categories for gas diffusion are:
- high efficiency oxygen transferring fine bubble and 
- high mixing energy coarse bubble.  

For anoxic mixing requirements the use of hydraulic recirculation systems utilizing high velocity discharge nozzles are most effective.  

We provide systems utilizing each of these methods on their own as well as systems where these methods are combined to achieve the best aspects of each method type.

Brochure
Application Data Sheet
Tideflex - Water Storage / Distribution / Treatment
Tideflex - Wastewater Treatment
Project: WWTP - Channel Aeration & Mixing 

Effluent outfalls typically incorporate multiport diffusers that discharge effluent over a wide area though numerous ports. Providing a cost-effective means of achieving high initial dilution multiport diffusers minimize the impact of municipal and industrial discharges on the environment.

The Tideflex Effluent System prevents intrusion of debris, sediment, salt water & aquatic life into the outfall pipeline providing excellent drainage with low flows at the same time.

Brochure
Application Data Sheet
Presentation: Tideflex Effluent Diffusers
Video: Introduction to Tideflex Effluent Diffusers
Video: Outfall Inspection
Tideflex Advantage!
Tideflex - Water Storage / Distribution / Treatment
Tideflex - Wastewater Treatment
Reference List - Ireland
Galway Project
Navan Project
White Paper: Maintaining (..) Efficiency of Marine Diffusers
Press Release: The Wide Bill Diffusers - lower headloss