1. Mazzei Injector Company, LLC
PRODUCT TRAINING
Mazzei Injector Company, LLC

2. INSTRUCTIONS
Click “Page Down” to forward to the next slide

3. CONTENT Products Technology Installation Applications
Thank you for your interest in the products from Mazzei Injector Company. This training contains four main topics. The first topic is “Products” – during this section, we will discuss the various types of products, Mazzei’s naming conventions, piping connections and materials of construction. The second topic is “Technology” – here we will discuss how an injector works and how to use Mazzei’s selection tools. The third topic is “Installation” – in this section, we will discuss various installation options and guidelines for proper installations. The final topic is “Applications” – in this section, we discuss a variety of applications where various Mazzei products can be applied and what benefits they offer.

4. PRODUCTS

5. PATENTED PRODUCTS Injectors with Vanes Degassing Separators
Special Nozzles
Flash Reactors
MAZZEI® INJECTOR COMPANY, LLC is the world leader in mixing and contacting technologies. Mazzei began in 1978 with its patented Venturi Injectors for irrigation chemigation and fertigation. Since then, the company has continued researching, innovating and setting industry standards. Mazzei manufactures a broad line of patented high-efficiency Venturi Injectors, specialized Mixing Nozzles, Degas Separators, Flash Mixers, and GDT™ Contacting Systems.

6. Inlet/Outlet Connection Size
NAMING CONVENTIONS
Injectors
Nozzles
Model Number
Inlet/Outlet Connection Size
384 ½”
684 ¾” …
1078 1”
1583
1 ½”
2081 2”
3090 3”
4091 4”
12094
12”
Model Number
Connection Size
N12 1”
N13
N22 2”
N25
N35 3”
etc…
Product details are fairly easy to determine from Mazzei’s Naming Conventions. The primary pipe sizes can be determined from the model numbers. In the injector example of a Model 1078, the “10” indicates a 1” pipe size. This convention, where the first number or group of numbers indicates pipe size, is consistent throughout the Mazzei product line.

7. Flash Reactors and LGMs
NAMING CONVENTIONS
Flash Reactors and LGMs
Model Number
Connection Size
FR113 1”
FR225 2”
FR235
FR335 3”
etc…
In Flash Reactors and Liquid Gas Mixers, the first number, again, indicates the pipe size.

8. NAMING CONVENTIONS Degas Separators Degas Relief Valves DS100 1” DS200
Model Number
Connection Size
DS100 1”
DS200 2” …
DS800 8”
etc…
The same holds true in Degas Separators and Degas Relief Valves.

9. CONNECTIONS Hose Barb Threaded Sanitary Flanged Hose Barb
Mazzei offers a variety of connections on standard products. Hose Barb ends are common on the Irrigation and Pool & Spa products. Threaded connections are available in both Male National Pipe Thread (MNPT) and British Straight Pipe Thread (BSPT) in standard products up to 4” diameter. Generally, larger pipe sizes are available in 150# flange connections. Mazzei also offers certain products in Tri-Clamp Sanitary connections for food and beverage processing applications.

10. MAZZEI F-30 FLOWMETER
Molded of polycarbonate with a #316 stainless steel float and set point indicator. Available for in-line installations, and made to the same high standards expected of all Mazzei products.
Features
Recommended for use with ½-inch and ¾-inch Mazzei Injector models.
Connections: ¼-inch Barb/MNPT
Scale – Water Flow Range: LPH or 5-40 GPH
Dual Scale for Liquid Flow
Flowmeters and valve assemblies can be added to the suction side of an injector to measure and regulate the draw rate, such as the F-30 Flowmeter.
Optional Suction Assembly Kits are available for industrial and agricultural applications. In addition, there are Flow Control Valves that enable customers to easily adjust liquid suction flow rate.

11. MAZZEI MV-5 METERING VALVE
The MV-5 is a step up in metering valves. It’s engineered to provide increased meter control through all valve positions due to its unique “V-Port” design. You can control flows more precisely and accurately. Its male threaded fitting offers easy installation and maintenance. Available in UV resistant Polypropylene or FDA approved natural PVDF. The MV-5 is designed for chemical feed in ag or industrial applications
Features
Mazzei also manufactures the MV-5 Metering Valve, which uses a “V Port” design to more precisely adjust the flow than using a standard ball or gate valve.
Plug valve design
Customized “V-Port” characterized seat control – better turn down capacity
Available in ½” Polypropylene or PVDF
Optional male to female threaded adapter for inlet and discharge.
Typical
Installation

12. MATERIALS OF CONSTRUCTION
Abbreviation
Material Name
Usage PP
Polypropylene
good for caustics, bad for acid and ozone
PVDF
Polyvinylidene Fluoride
good for acids and strong oxidants
ECTFE
Ethylene Chlorotrifluoroethylene
resistant to most everything
FEP
Fluorinated Ethylene Propylene
used in our MV-5 metering valve
M-PVC
Modified Polyvinyl Chloride
used in spa industry products
Stainless Steels
316L – Fabricated products
CF3M – Cast products
good for most anything except chlorine
Mazzei standard materials of construction are five types of plastic - polypropylene (PP), polyvinylidene fluoride (PVDF), Ethylene ChloroTriFluoroEthylene (ECTFE), fluorinated ethylene propylene (FEP), modified polyvinyl chloride (M-PVC) and two types of stainless steel – 316L for fabricated SS products and CF3M for cast SS products. Selection of the proper material for any application results in longer operating life at the lowest capital cost.

13. TECHNOLOGY

14. HOW AN INJECTOR WORKS
Mazzei Venturi Injectors are differential pressure injectors with internal mixing vanes. Superiority of Mazzei Injectors is due to the unique, patented design which maximizes injector efficiency, suction capacity and mixing capabilities. The operating costs of Mazzei Injectors are lower than less efficient systems, and Mazzei Injectors are trouble-free because they have no moving parts.
When pressurized water enters the injector inlet, it is constricted toward the injection chamber and changes into a high-velocity jet stream. The increase in velocity through the injection chamber results in a decrease in absolute pressure, creating a vacuum, thereby enabling an additive material to be drawn through the suction port and entrained into the water stream. As the jet stream is diffused toward the injector outlet, its velocity is reduced and it is reconverted into lower pressure energy.

15. INJECTOR SELECTION
To select an injector using Mazzei’s Performance Tables, you need four pieces of information:
Inlet Pressure – what is the pressure at the inlet port of the injector?
Motive Flow Rate – what is the fluid flow rate through the injector?
Outlet Pressure – what is the pressure at the outlet port of the injector?
Injection Rate – How much do you want to inject?

16. INJECTOR SELECTION
In this example, a Model 1583 is chosen based on the inlet pressure, motive flow rate, outlet pressure and injection rate.

17. ZERO SUCTION POINT
The numbers in BLUE indicate the back pressure point at which no suction occurs
It is important to note that all Mazzei Injectors are “differential pressure injectors” which means that the higher the differential pressure, the more they will draw. It also means that there is a point where the pressure differential is so small that they will no longer draw at all. This point is noted in blue on the Performance Tables.

18. WHY FLUID SUCTION VARIES WITH PRESSURE DIFFERENTIAL
Suction is greater when the pressure differential is high because a larger space in the injector experiences a vacuum 25
PSI 5
HIGH SUCTION
Vacuum
Space 20
PSI 25
LOW SUCTION
Vacuum
Space
Fluid Suction = 31.9 GPH
As noted previously, the suction is greater the higher the pressure differential.
Fluid Suction = 96.7 GPH

19. OTHER FACTORS AFFECTING LIQUID INJECTION
Specific Gravity different from water
Pressure on suction port
Material must be lifted
Elevation different than sea level
Mazzei Injector performance is calculated using known standards, such as, temperature, pressure and specific gravity. Any deviation from these standards will affect the performance. Mazzei’s Technical Bulletin #1 details the correction factors necessary with deviations in specific gravity, suction height, elevation above sea level and viscosity.
See Technical Bulletin 1 for correction calculations

20. INSTALLATION

21. TYPICAL INSTALLATIONS
Pressure Reducing Bypass
Pressure Boost Bypass
Full Flow
There are typically three basic installation types for Mazzei Injectors. Pressure Reducing Bypass installs the injector in a bypass line around the main line flow. Pressure Boost Bypass uses a booster pump to draw flow from the main line, boost the pressure through the injector and return the flow back to the main line flow. Full Flow allows all of the fluid to be treated flow through the injector.

22. PRESSURE REDUCING BYPASS
Optional Suction
Line Kit
Optional Flowmeter
Pressure Reducing Valve
PRESSURE REDUCING BYPASS
The injector is installed around a point of restriction, such as a regulator valve or a gate/ball valve. These create a differential pressure across the injector, thereby allowing the injector to produce a vacuum and draw in material. Bypass assemblies are used with Mazzei Injectors for two purposes. These are:
1. To create a pressure differential across the injector to induce suction
2. To enable use of an injector whose flow rate is less than the total flow rate
This version uses an actuated pressure reducing valve to create the pressure differential.

23. PRESSURE REDUCING BYPASS
Optional Suction
Line Kit
Optional Flowmeter
Flow
Valve
PRESSURE REDUCING BYPASS
This version uses an manual valve to create the pressure differential.

24. PRESSURE REDUCING BYPASS
Optional Flowmeter
Optional Suction
Line Kit
PRESSURE REDUCING BYPASS
This version uses an manual valve to create the pressure differential for multiple injectors.

25. PRESSURE BOOST BYPASS Booster Pump Optional Suction Line Kit
Optional Flowmeter
PRESSURE BOOST BYPASS
When mainline pressure cannot be reduced, a small booster pump can be used to create a sufficient differential to operate the injector.

26. FULL FLOW Flow Optional Suction Line Kit Optional Flowmeter
A Full Flow installation can be used when the injector can operate within the flow rate and pressure requirements of the process.

27. PROPER INSTALLATION RULE
The injector’s outlet cone must remain flooded – a measurable amount of backpressure must be present for the injector to work properly.
Examples of no- backpressure installations (DO NOT DO THIS):
The injector has no piping attached to the outlet
The injector is installed vertically with the water flow going down OK
Factors which allow for reliable Mazzei® injector operation are noted as follows:
• Mazzei® Injectors require differential pressure to create suction. The injector’s outlet pressure (backpressure) must be sufficiently lower than the inlet pressure. For most models, significant suction begins with a 25-30% pressure differential.
• Mazzei® Injectors should be installed with the main body in a horizontal position, or with the outlet facing up. The injector suction port can be oriented in any position.
• To insure consistent suction, the outlet side of the injector should be flooded or have some restriction downstream (backpressure).
• Always use full flow isolation valves and non-restrictive fittings when connecting to the injector. These valves and fittings should be at least the same size as the inlet/outlet connections on the injector. Isolation valves are optional, but recommended.
• Do not over-tighten the injector when attaching piping and fittings. The use of an appropriate thread sealant is recommended.
• Install pressure gauges near the inlet and outlet of the injector to monitor operating conditions.

28. METHODS OF ADJUSTING THE SUCTION RATE
The suction rate can be adjusted by either:
Throttling the suction line with a throttling valve
Throttling the flow through the injector, which changes the pressure differential resulting in a changed suction rate.

29. APPLICATIONS

30. MAZZEI APPLICATIONS Aeration Applications Odor Control BOD Reduction
Sludge Digesters
Post Treatment
Pre-Filter Oxidation
Ozone Applications
Taste and Odor
Disinfection
Industrial Applications
Mixing Systems
Pipeline Flash Reactor
Basin Nozzle Manifold
Mazzei has developed solutions to water and wastewater problems in the municipal, industrial and agriculture markets… solutions to disinfection and sanitation problems for all markets including pools and spas… and developed an improved method for wine pump-over aeration.
Patented Mazzei products are also used in our AirJection Wastewater Aeration Systems. Our aeration systems provide energy efficient, low cost, quiet solutions to wastewater problems with no maximum depth limitations. Applications include: activated sludge aeration, sludge digestion, odor control, ozone for disinfection, post-treatment aeration, pure oxygen injection, sewer main aeration and retrofit aeration.
The Mazzei GDT Contacting Systems transfer ozone gas rapidly into solution and subsequently remove undissolved gas. Each system is custom engineered for mass transfer efficiency and may be conveniently assembled on a compact skid frame. The system maintains system pressure, requires little maintenance and achieves a high ozone transfer – no other system transfers ozone into solution faster than Mazzei’s.

31. WASTEWATER AERATION – ODOR CONTROL
EQ Tanks
Ponds and Lagoons
Industrial Process Water Storage Tanks
Mazzei
Injector
It should come as no surprise that traditional surface aeration affects only the surface. That allows anaerobic bacteria to proliferate beneath the surface and produce unpleasant odors. Nothing “gets to the bottom” of pond or basin water treatment like the Mazzei AirJection System, which circulates water through the patented, high-efficiency Mazzei® Injectors, delivering dissolved oxygen from the bottom up for complete aeration. Unlike compressed air diffusion systems, AirJection’s efficiency increases with depth, allowing for deeper ponds with smaller footprints.
MTM® Nozzles

32. LAGOON AERATION – ODOR CONTROL
In the presence of sludge and solids, bubble diffuser transfer rates suffer, whereas Mazzei AirJection systems remain virtually unaffected. And without the need for blowers, AirJection operates silently, too. AirJection reduces the negative impacts of cold weather on activated sludge basins at levels where surface aerators have limited performance potential.

33. 10 MM gal Lagoon (Plan View)
CFD ANALYSIS FOR MIXING
10 MM gal Lagoon (Plan View)
Mazzei continues its focus on research and development, including the use of computational fluid dynamics simulations, to improve mixing and contacting technology. When selecting this option, a client gains confirmation of the aeration system design.

34. SLUDGE DIGESTER
From odor control for tanks, basins and lagoons to reducing high BOD levels and increasing dissolved oxygen in even the most complex system, Mazzei gets results. Mazzei makes wastewater aeration efficient, effective and economical with its patented AirJection® Aeration System. AirJection Aeration delivers dissolved oxygen economically to any depth needing complete water aeration. It produces predictable, thorough aeration without the use of troublesome, expensive, blowers or diffusers.

35. SLUDGE DIGESTER 12” Mazzei Injector Nozzle Manifold Submersible Pump
In AirJection Aeration’s recirculating process, wastewater is pumped through one or more patented Mazzei Injectors forcing air or oxygen to aspirate into the wastewater. The resulting gas-water mixture is then discharged back into the basin/pond/tank/reservoir/lagoon under pressure through patented Mazzei Mass Transfer Multiplier (MTM) Mixing Nozzles for greater mass transfer in the surrounding water. Microbubbles then emerge and rise to the surface. The AirJection Aeration system enjoys a small footprint and safe operation with no moving parts other than a recirculating pump. Mazzei’s engineering staff assists with design and recommendations for each application based on treatment conditions and expectations.
Submersible
Pump

36. WASTEWATER AERATION and AIR STRIPPING
The growing demand placed on the world’s water, in combination with more stringent water quality regulations, have placed unprecedented demands to provide safe, reliable and aesthetically pleasing drinking water. Air stripping is an effective way of removing volatile organic chemicals (VOCs) from contaminated water and is commonly used for this application. Air stripping systems mix air with a water supply with the goal to generate the largest possible air-water contact area so that VOCs and dissolved gases, such as radon and hydrogen sulfide, will move from the water to the air. In addition to removing VOCs, air stripping is primarily used for removing oxidizing contaminants such as iron and manganese, improving taste, or removing odor. Air stripping is an EPA Best Available Technology (BAT) for some VOCs including benzene, toluene, xylene, tri/tetrachloroethylene, trihalomethanes, vinyl chloride and many others.

37. WASTEWATER AERATION WITHOUT BLOWERS
Pump → Injector → Nozzles
Low Maintenance
Virtually Silent
No Water depth Limitations
More Efficient Mixing
Maintains Water Temperature
The benefits of Mazzei AirJection wastewater aeration are:
whisper quiet operation – no blowers
low system maintenance – no fouling
no limits on water depth
low operating and installation costs
Easily adaptable for many applications – Tanks, Ponds, Lagoons, Basins, Reservoirs
Can be used to inject air or pure oxygen
Resistant to corrosion, erosion, and abrasion
Energy efficient oxygen transfer

38. GDT ™ OZONE SYSTEMS for WATER TREATMENT
Mazzei is renowned as a leader in mixing and contacting technology, and the Mazzei GDT Contacting Process has proven to be extremely efficient in utilizing this technology in air stripping applications. The GDT Contacting Process dynamically transfers gases into solution while removing unwanted entrained or dissolved gases.
The GDT Contacting Process draws air into the pressurized water to be treated via high efficiency Mazzei Venturi Injectors. The dynamic mixing that takes place at the injector efficiently transfers air into solution and strips unwanted materials. The objectionable materials are removed by the patented Mazzei Degas Separator before they can go back into solution. Staged recirculation within the GDT Contacting System allows for enhanced removal rates of the most difficult contaminants.
The GDT Contacting Process, either independently or in conjunction with other technologies, is an efficient and dependable means of treating waters. It offers water treatment professionals the benefits of design flexibility for any flow rate. In addition to the technological benefits, the GDT Contacting Process features a small footprint and low capital, installation and operating costs in an easy to install, non-fouling pressurized system which provides the user with the ability to contain and treat process off gas.

39. OZONE CONTACTING SKID
Examples of stripping applications which benefit from the GDT Contacting Process are:
Acid Water Treatment — CO2 Removal The ratio of carbon dioxide to bicarbonate ion directly affects the pH of water — the higher the ratio the more naturally acidic the water. Due to its corrosive nature, acidic water causes corrosion of piping materials, and corrosion is the primary cause of elevated lead/copper levels in water distribution systems. The GDT Contacting Process provides corrosion control by stripping CO2 from solution and lowering the CO2/HCO3
Methane Removal Methane is easy to strip out of water. With Mazzei®Venturi Injectors — part of a GDT Contacting System — more than 80% removal can be achieved.
Radon Reduction The GDT Contacting Process is ideally suited to strip radon from water due to the high Henry’s Law constant and pressurized operational design.

40. FERTIGATION and AIRJECTION® IRRIGATION
Chemigation is the process of injecting chemicals into an irrigation system, and only Mazzei makes this process inexpensive and easy to maintain. Using high-efficiency Venturi Injectors, Mazzei chemigation delivers precise mixing and uniform distribution of material into the water stream. Mazzei chemical injectors have no moving parts, and typically require no supplemental pump system. They rely instead on a vacuum to transfer irrigation chemicals, providing additional safety. Mazzei patented designs are precisely engineered. Imitation products simply do not perform like a Mazzei chemical injector.
Fertigation, or the injecting of fertilizer into a pressurized irrigation system, is the most common application for Mazzei fertilizer injectors. With a Mazzei fertilizer injector you get the advantages of a non-mechanical fertigation system that is easy to maintain.
Mazzei also offers the best system to put air (oxygen and nitrogen) directly to the root zone. Plant roots need air to breathe — without it, soil can become anaerobic, inhibiting plant growth and yield. Mazzei AirJection® Irrigation technology improves crop yields, water use efficiency and fertilizer inputs by getting just the right amount of air into the root zone.
It uses patented, high-efficiency Venturi AirJectors™ that are simple to install and maintain in subsurface irrigation systems. When added to the drip line, these Venturi injectors incorporate atmospheric air into the irrigation water optimally blending air and water so the right mixture is delivered to the root zone. Commercial on-farm use showed yields increased from 13% to 35% due to improved plant and soil conditions.

41. Sidestream Gas Injection With Pipeline Mixing
PIPELINE FLASH REACTOR ™
Sidestream Gas Injection With Pipeline Mixing
- Force Main or Post Aeration - 15
PSI 30
PSI
Air
Basin or discharge
Pipeline Flash Reactors™ (PFR) utilize high velocity mixing to transfer ozone or oxygen-enriched sidestreams into bulk water flow, all within a compact footprint. With a PFR, ozone or oxygen mass transfer occurs in the pipeline within seconds, eliminating the need for additional tanks or basins. Whether it is providing ozone for water purification or increased dissolved oxygen for wastewater, Mazzei’s PFR uniformly distributes gas into the water and minimizes the size and cost of gas contacting.
Mazzei Pipeline Flash Reactor Provides:
Rapidly mixed ozone gas with treatment plant’s bulk water
Low pressure loss across the mixing zone
*Mass transfer efficiency of 95% and greater
Reduced size requirements of downstream contact basins
Elimination of repairs/replacement of diffuser stones
Increased basin CT credits in many cases
Completely fabricated 316L stainless steel product
Product designed specifically to conform to plant space, flow requirements, and ozone dosage

42. PIPELINE FLASH REACTOR ™
Wastewater plants typically have to employ some method of treatment to increase dissolved oxygen prior to final discharge into receiving waters. Mazzei’s Pipeline Flash Reactor provides a technology for rapid oxygen transfer within a compact footprint. The system utilizes a small sidestream passed through a patented Mazzei Venturi Injector to draw in ambient air, concentrated oxygen or ozone. The aerated sidestream is then delivered to the Pipeline Flash Reactor where it aggressively mixes with the main flow, uniformly transferring the oxygen in the effluent pipeline.
Where space is an issue, such as in existing built-out urban areas, the PFR eliminates the need for post-treatment cascading systems or diffuser basins required by other technologies. The PFR can also be utilized for the dissolution of oxygen gas in systems with high dissolved oxygen requirements.
The Pipeline Flash Reactor eliminates noise and high maintenance costs and downtime associated with blowers and bubble diffusion basins as well as the problems that cascade systems have with flooding

43. PIPELINE FLASH REACTOR™
GDT™ with
PIPELINE FLASH REACTOR™
Eliminates Need For
Off-gas Basin
Pipeline Flash Reactors can also be combined with Mazzei’s GDT process to add ozone to a flow while removing all entrained gas before injection into the main pipeline.

44. PIPELINE FLASH REACTOR ™
GDT ™ with
PIPELINE FLASH REACTOR ™
Compact Footprint
Rapid Oxygen Transfer
Low Maintenance
Low Noise
No Diffusers
No Basins
This configuration provides many benefits, including:
Compact footprint
Rapid oxygen/ozone transfer
Low maintenance
Low noise
No diffusers
No basins

45. PUMP-INJECTOR SKID
Whatever your operation or application – whether you’re mixing or contacting, aerating or irrigating –Mazzei can deliver a cost-effective solution. We are available to help custom engineer a solution to your problem — contact Mazzei today.

46. Mazzei Injector Company, LLC
THANK YOU
Mazzei Injector Company, LLC