2800 Static Mixers

Model 2800 Plate Type Static Mixer
US Patent No. 5,839,828

Certified for 316 SS, CPVC, Hastelloy, and PVC

Download the NEW
Westfall Headloss Calculator Spreadsheet.

The Westfall Model 2800 Static Mixer is a full pipe motionless static mixer in which fluids are injected and rapidly mixed by a combination of alternate vortex shedding and intense shear zone turbulence.

Alden Labs mass fraction simulation of Westfall’s Model 2800 Mixer.

Coagulation-flocculation of waste water from a poultry plant using Westfall static mixers.

Try the Models 2800 and 3050 Mixers Cavitation Calculator downloadable Excel spreadsheet for the 2800 and 3050 mixers.

Try the Models 2800 and 3050 Mixers Headloss Calculator downloadable Excel spreadsheet. Enter the pipe interior diameter to calculate headloss for the Westfall models 2800 and 3050 mixers.

Download the Alden Lab’s cavitation analysis of models 2800 and 3050 mixers.

Download the Alden Lab’s structural analysis of the 0.8-Beta 2800.

Download the Alden Lab’s test results.

Download the Naval Undersea Warfare Center’s hydrodynamics evaluation.

Read about Westfall’s 2800 Improves Water Quality.

Read about Westfall’s 2800 mixer enhancing water treatment in New Zealand.

Download the 2800 Static Mixer Catalog.

Download the 2800-2850 Operations Manual. (English)

Download the Japanese 2800 Static Mixer Catalog.

Descargar el Catálogo 2800 Mezclador Estático.

Descargar el Manual de Mantenimiento Modelo 2800/2850. (Spanish)

Typical Installation View

Features:

• Excellent Mixing
• Low Cost
• Short Laying Length
• Integral Injection Fittings
• Easy Installation
• Long Service Life
• No Maintenance Required
• No Moving Parts
• Available in any Material: PVC, FRP, 316 SS, Titanium, etc.

Applications:

• Water treatment
• Chemical blending
• Dissolving gases
• Polymer blending
• Flocculent blending
• Ph control
• Potable water
• Waste water
• Chlorination
• De-Chlorination

Mixer Orifice Diameters

The 2800 Static Mixer comes in three orifice ratios so you choose the one best suited to your needs.

Alden Laboratory CoV results for
Mixer Plate Beta Openings

CoV= standard deviation of the test data divided by the average of the test data

CoV	Beta Ratio
.008	.7	with excellent mixing at 1-3 FPS
.009	.8	with excellent mixing at 3-8 FPS
.050	.9	with excellent mixing at 8-11 FPS

.7 beta 32

.8 beta 19

.9 beta 7

The following are examples of mixers we have developed for our customers. We would be happy to configure a Westfall Model 2800 Wafer Type Static Mixer for your application.

Repeat Customer List
Anheuser-Busch Air Liquide Bechtel Bird Machine Bridger Scientific Chinet Company City of Punta Gorda	Cusac Construction F.B. Leopold Co Fluid Metering Co Groeniger & Co. Harn R/O Hungerford & Terry Johns Manville	Kaylon Assoc Kinetico Mauldin Dorfmeier MPI Mechanical National Gypsum Shintech Inc. Waterlink Technologies
Anderson Water Systems Ltd.

72" 2800 Plate Type Mixer Installed at Cypress Creek

Model 2800 is removed from its shipping crate. Its thin form factor allows it to be air shipped anywhere in the world.

The 2800 is aligned to the pipe flange before being bolted in place.

Mixing Demonstration

Here potassium permanganate is injected into water. You can see the excellent mixing provided by the Model 2800.

Control flow without mixer

Results with 2800 installed

72” Westfall Model 2800 Wafer Type Static Mixer

Mixing Plate:

316 Stainless Steel

Gaskets:

Neoprene

Application:

Water Treatment Project

Installation:

Florida

1600 MM Westfall Model 2800 Wafer Type Static Mixers

Mixing Plate:

316 Stainless Steel

Gaskets:

(2) 1/8" Blue Guard 3000

Corp-Stops:

3/4" Brass Corp-stops with Hastelloy Solution Tube

Application:

Injecting Sodium Hydroxide and Chlorine

Installation:

Saudi Arabia

60" Westfall Model 2800 Wafer Type Static Mixer

Mixing Plate:

60" .8 Beta mixer Zeron 100

Injection Fittings:

316 Stainless Steel

Gaskets:

 

Application:

Liquid Sodium Hypochlorite feed in a Water Treatment Plant

Read more about this installation.

The 60-inch diameter Westfall static mixer awaits installation.

Westfall static mixer in-line at Sebago Lake Water Treatment Facility.

1000mm Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

FRP

Mixing Plate:

Alloy-20

Corp-Stops:

2" Brass with 1.5" PVC solution tubes

Gaskets:

1/8" EPDM

Injected Chemicals:

Chlorine

Service:

60,000 m³/day

Application:

Water Treatment

Customer:

Power and Water Utility for Jubail and Yanbu

36" Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

316 Stainless Steel

Mixing Plate:

316 Stainless Steel

Corp-Stops:

3/4" with Hastelloy quills

Gaskets:

1/8" EPDM

Injected Chemicals:

Caustic Soda

Hydroflustic acid

Sodium Hypochlorite

Aqua Ammonia

Service:

150 lb.

Application:

Water Treatment Project

Customer:

Desalter Project

Emma Corp, CA

24" - 36" Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

316 Stainless Steel

Mixing Plate:

316 Stainless Steel

Injection Fittings:

316 Stainless Steel

Gaskets:

 

Application:

Water Treatment Project

Customer:

Desalter Project

City of Oxnard, CA

24” Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

Teflon Coated 316 Stainless Steel

Mixing Plate:

Teflon Coated 316 Coated 316 Stainless Steel

Corp-Stops:

(2) 1", (1) 1.25" (1) 1.50"

Gaskets:

1/8" EPDM

Injected Chemicals:

Alum, Mixed Oxidants, Lime and Activated Carbon

Service:

150 lbs.

Application:

Raw Water Feed to Potable Water Treatment Plant

20" Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

Teflon Coated 316 Stainless Steel

Mixing Plate:

Teflon Coated 316 Coated 316 Stainless Steel

Injection Fittings:

 

Gaskets:

1/8" Teflon

Corp-Stop:

3/4" Corp-Stop w/PVC Quill

Flow Rate:

8000 GPM Water

Injected Fluid:

Ferric Chloride

Service:

150 lbs.

Headloss:

3 PSI

Application:

Industrial waste treatment

14" Model 2800 Wafer Type Static Mixer

Mounting Ring:

Kynar (PVDF)

Mixing Plate:

.75 Beta Kynar (PVDF)

Injection Quill:

(1) 1/2" Kynar (PVDF)

Gaskets:

(2) 1/8" NSF 61 certified Teflon

Application:

Injecting 93% Sulfuric Acid into Water

10” Westfall Model 2800 PVC Wafer Type Static Mixer

Mounting Ring:

PVC

Mixing Plate:

PVC .8 Beta PVC

Injection Fitting:

(1) 3/4" PVC Nipple

Gaskets:

(2) 1/8" EDPM

Application:

Injecting Chlorine Solution

(4) 8" Westfall Model 2800 304 Stainless Steel Wafer Type Static Mixers

Mounting Ring:

316 Stainless Steel

Mixing Plate:

316 Stainless Steel

Injection Fittings:

316 Stainless Steel

Gaskets:

Flexitallic®

Application:

Injecting Ethylene into Benzene at 400 PSI Pressure and Temperature 255°C

(2) 8” Westfall Model 2800 Titanium Wafer Type Static Mixers

Mounting Ring:

Titanium

Mixing Plate:

Titanium

Injection Fitting:

1" Titanium

Gaskets:

Teflon

Application:

Injecting additives into Sodium Hypochlorite at 100°F

Installation:

Bleach manufacturing plant

6" 4-Port Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

316 Stainless Steel

Mixing Plate:

316 Stainless Steel

Injection Fittings:

316 Stainless Steel

Gaskets:

EPDM

Application:

Installed in a pump well which had a turbine pump, 6" swing/lever check valve, a few inches of straight pipe and a 90° ell.

Flow	Chemical Feed	Feed Rate
700 gpm	Alum	11 gph
	Potassium Permanganate	0.3 gph
	Polymer	1.6 gph
	Soda Ash	13 gph

6" Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

FRP

Mixing Plate:

316 Stainless Steel

Injection Fittings:

316 Stainless Steel

Application:

0.75% Polymer/water solution and 2% aerobically digested sludge

Customer

Town of South Hill WWTP

South Hill, VA

6" Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

FRP

Mixing Plate:

316 Stainless Steel

Injection Fittings:

316 Stainless Steel

Gaskets:

EPDM

Application:

Injecting Aluminum Sulfate

Installation:

Water Treatment Plant

Customer:

Port Chalmers W.T.P.

Dunedin, New Zealand

6" and 8" Westfall Model 2800 Wafer Type Static Mixer with FRP Mounting Ring

Mixing Plate:

8 Alloy –20

Corp-Stops:

(4) 3/4" Brass with PVC Solution Tube

Gaskets:

(2) 1/8" EPDM Gaskets

Application:

Potable water

3" Westfall Model 2800 CPVC Schedule 80 Mixer

Mounting Ring:

CPVC

Mixing Plate:

CPVC .7 Beta

Injection Fittings:

(2) 1/2" CPVC Nipple

Application:

Injecting 1% Sodium Chlorite into wastewater

2.5" Westfall Model 2800 Wafer Type Static Mixer

Mounting Ring:

Alloy –20

Mixing Plate:

.7 Beta Alloy –20

Injection Fittings:

(2) 1/2" Kynar Quills with Built-in Check Valves

Gaskets:

(2) 1/8" Teflon Gaskets Bonded to Ring

Application:

Injecting Nitric Acid into fish protein solution, manufactured for a customer in Norway