The compact drop-in Variable Flow Mixer Model 2900 accommodates a turn down ratio of up to 20-1 in liquids or gases by incorporating two of Westfall’s signature plate mixers. The mixer provides a faster, better and often more economic choice for mixing and blending while providing constant headloss.
The upstream plate remains stationary while the downstream plate pivots as it adjusts incrementally to changing flow conditions. The downstream mixer responds to a differential pressure controller, opening wide for maximum flow velocity to reduce headloss, and closing as flow decreases to enhance mixing. Headloss remains constant throughout.
Read Report
CFD Report 6″ Variable Flow Rate Mixer 2900
Variable Flow Mixer for Bitumen Blending
Westfall Manufacturing introduced the Variable Flow Plate Model 2900 for bitumen blending, viscosity and density control in 2010. The device mixes multiple diluents to the correct viscosity and density, and allows pumping over a wide range of flow rates.
The Westfall Model 2900 is a high shear plate-style static mixer which achieves a low CoV (coefficient of variation) of injected diluents. Because it is capable of achieving a uniform concentration of injected materials while sustaining specific pressure loss criteria downstream, the Model 2900 reduces consumption of bitumen diluents.
The CFD report from Alden Labs shows that this mixer accommodates flow rates at up to a 20 to 1 turndown ratio.
Usage and Applications
20" Variable Flow Static Mixer
Variable Flow Static Mixer Model 2900
- UPSTREAM MIXING PLATE
- Material: 316 Stainless Steel with Fluoropolymer Coating
- Mounting: FRP
- Gaskets: (2) 1/8” Fluoropolymer
- Corp-Stop: (1) 1/4” EB-145 removable with removable PVC solution tube
- Size: .9 BETA
DOWNSTREAM MIXING PLATE (ADJUSTABLE)
Material: 316 Stainless Steel with FluoropolymerCoating
Size: .7 BETA
Application: Injecting ferric chloride
- CUSTOMER
- Arizona Waste Treatment Plant
Model 2900 for Bitumen Blending
Model 2900 for Bitumen Blending
The Westfall Model
2900 Variable Flow Static Mixer for bitumen blending, viscosity, and density control combines two wafer-style static mixers to achieve a low CoV (coefficient of variation) of injected diluents. Capable of achieving a uniform concentration of injected materials within a short downstream distance, while sustaining the maximum pressure loss criteria, this highly efficient mixer reduces consumption of the bitumen diluents.
Common Applications
- Water Treatment
- Waste Water
- Chlorination/De-Chlorination
- Chemical Processing
- Polymer Blending
- Flocculant Blending
- pH Control
- Chemical Blending
- Food Processing
Benefits and Features
| BENEFITS | FEATURES |
|---|---|
| Sustains Required Headloss | Fixed Upstream Plate |
| Up to 20-1 Turndown Ratios | Pivoting Downstream Plate |
| Viscosity and Density Control | Computer Designed Orifice |
| Mixes Well at Low Flow Rates | 3 Orifice Ratios |
| Reduces Consumption of Dilutants | 1.5″ to 120″ Pipe Size |
| Affordable, Easy to Install | Differential Pressure Controller |
| Low Maintenance/Low Cost | Slim Profile |
| Ultra-Durable | Bent Tabs |
| Easily Ships Worldwide | 3/8″ to 120″ Pipe Diameters |
