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Stainless Steel Static Mixers

Price range: $257.00 through $4,345.00

Stainless Steel Static Mixers are durable, inline mixing devices made from 304, 316, or 316L stainless steel.
They provide efficient and uniform blending of liquids, gases, and multiphase fluids without any moving parts.

What Are Stainless Steel Static Mixers?

These mixers consist of a stainless steel housing with fixed internal helical or corrugated mixing elements.
As fluids pass through the elements, they are repeatedly divided, rotated, and recombined to achieve thorough mixing in a short pipe length.

They are ideal for applications requiring high corrosion resistance, elevated temperatures, or high-pressure conditions where plastic mixers are not suitable.

Key Benefits

Corrosion Resistance Excellent performance with acids, caustics, and aggressive chemicals.
High Strength Handles high pressure and high temperature applications reliably.
No Moving Parts Maintenance-free operation with long service life.
Versatile Suitable for chemical, petrochemical, oil & gas, power, and water treatment processes.

Stainless Steel Static Mixers deliver reliable, corrosion-resistant mixing performance in the most demanding industrial environments.

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Stainless Steel Static Mixers are robust, inline mixing devices constructed entirely from high-quality stainless steel.
They provide efficient, uniform blending of liquids, gases, or multiphase fluids without any moving parts, making them ideal for demanding industrial applications where durability, corrosion resistance, and reliability are essential.

What Are Stainless Steel Static Mixers?

These static mixers consist of a stainless steel pipe section housing fixed internal mixing elements — typically helical (twisted) or corrugated blades.
As fluids flow through the elements, they are repeatedly divided, rotated, and recombined, creating thorough mixing in a short distance.

Available in 304, 316, and 316L stainless steel, they offer excellent resistance to corrosion, high temperatures, and aggressive chemicals, making them suitable for both general industrial use and sanitary applications.

Key Benefits

Corrosion Resistance Excellent performance with aggressive chemicals, acids, and high-temperature fluids.
No Moving Parts Maintenance-free operation with zero risk of mechanical failure.
High Strength & Durability Suitable for high-pressure and high-temperature applications.
Versatile Mixing Performance Effective for liquids, gases, and multiphase fluids with low to medium viscosity.
Easy Installation & Low Maintenance Available in flanged, wafer, or butt-weld configurations with minimal pressure drop.

Common Applications

  • Chemical processing and dosing
  • Petrochemical and refining
  • Water and wastewater treatment
  • Oil & Gas (additive injection, polymer blending)
  • Power generation (cooling water, chemical injection)
  • Food & Beverage (non-sanitary or utility lines)
  • Pharmaceutical intermediate processes

Stainless Steel Static Mixers combine outstanding durability and corrosion resistance with efficient, maintenance-free mixing performance.
They are the preferred choice in harsh or high-pressure environments where plastic or coated mixers would not survive.

Weight 24 lbs
Dimensions 12 × 1 × 1 in
Size

1/2", 3/4", 1", 1-1/2", 2", 3", 4"
Element Type

Blade, Helix, Non-Clog, Waffle
Materials of Construction

304SS, 316SS
Element Qty

6, 12
Connection End

Threaded (MNPT), Flanged (RF Class150)

Specifications

Stainless Steel Static Mixers are heavy-duty inline mixing devices built for demanding industrial applications.
They offer excellent corrosion resistance, high strength, and reliable mixing performance with no moving parts.

Detailed Specifications – Stainless Steel Static Mixers

Parameter Specification Notes
Material of Construction 316L Stainless Steel (standard)
304 Stainless Steel (optional)
Duplex or Hastelloy (on request)		 316L offers superior corrosion resistance
Pipe Sizes ½” to 24″ (DN15 to DN600) Larger sizes available on request
Connection Types ANSI/DIN Flanged, Wafer Style, Butt Weld Ends Raised Face or Flat Face flanges standard
Mixing Elements Helical (twisted) or Corrugated / Tabbed elements Fixed or removable elements available
Pressure Rating Up to 600 PSI (41 bar) standard
Higher ratings on request		 Dependent on size and flange class
Temperature Rating -320°F to 1200°F (-196°C to 649°C) Limited by gasket or seal material when used
Surface Finish Standard mill finish or electropolished (optional) Ra values available upon request
Number of Elements 2 to 24 elements (depending on mixing requirements) More elements = better mixing but higher pressure drop
Pressure Drop Low to moderate (typically 1–5 psi at design flow) Depends on viscosity and number of elements
Applications Chemical dosing, pH control, polymer blending, gas-liquid mixing, additive injection, water treatment Ideal for corrosive or high-temperature processes

Stainless Steel Static Mixers deliver reliable, maintenance-free mixing performance in harsh environments where corrosion resistance and mechanical strength are critical.
Their robust construction makes them suitable for continuous duty in demanding industrial processes.

Technical

MNPT Stainless Static Mixer Technical Specifications

ModelPipe Dia.
MNPT Ends		Number of
Elements		LengthRemovable
Element		Weight
0.25-STD-304-2B-6-MNPT1/4"63"Yes0.18
0.25-STD-304-2B-12-MNPT1/4"126"Yes0.34
0.37-STD-304-2B-6-MNPT3/8"64"Yes0.24
0.25-STD-304-2B-12-MNPT3/8"128"Yes0.46
0.5-STD-304-2B-6-MNPT1/2"65"Yes0.39
0.5-STD-304-2B-12-MNPT1/2"1210"Yes0.80
0.75-STD-304-2B-6-MNPT3/4"67"Yes0.75
0.75-STD-304-2B-12-MNPT3/4"1213"Yes1.39
1.0-STD-304-2B-6-MNPT1"69"Yes1.31
1.0-STD-304-2B-12-MNPT1"1217"Yes2.55
1.25-STD-304-2B-6-MNPT1-1/4"611"Yes2.71
1.25-STD-304-2B-12-MNPT1-1/4"1222"Yes4.99
1.5-STD-304-2B-6-MNPT1-1/2"613"Yes3.41
1.5-STD-304-2B-12-MNPT1-1/2"1226"Yes6.55
2.0-STD-304-2B-6-MNPT2"617"Yes5.71
2.0-STD-304-2B-12-MNPT2"1233"Yes11.21

Pressure Drop

Pressure Drop vs. Flow Rate

Stainless Steel Static Mixer (316L) – 4″ Nominal Size
Fluid: Water (1 cP viscosity) at 68°F (20°C)

Typical Pressure Drop Curve – Stainless Steel Static Mixer

Flow Rate (GPM)   |   Pressure Drop (psi)
─────────────────────────────────────────────
50            |    2.1
100            |    6.8
150            |   12.5
200            |   20.2  ← Typical Design Point
250            |   29.8
300            |   40.5
350            |   52.8
400            |   66.0

Stainless Steel Static Mixers (helical or corrugated element design) produce moderate pressure drop.
Recommended design range: 10 – 45 psi for effective mixing in corrosive and general industrial services.

Key Notes on Pressure Drop for Stainless Steel Static Mixers

  • Stainless Steel Static Mixers (primarily 316L) typically have moderate pressure drop — higher than PVC/CPVC but lower than tube bundle or shell & tube designs.
  • Pressure drop increases approximately with the square of the flow rate and rises significantly with higher viscosity or density.
  • Helical element designs are most common, offering a good balance between mixing performance and acceptable pressure loss.
  • Typical design target is 10 – 45 psi depending on required mixing uniformity and process conditions.
  • For high-viscosity or slurry services, pressure drop can be substantially higher — custom element configurations are often used.
  • Electropolished versions for hygienic applications may have slightly different pressure drop characteristics due to smoother surface finishes.

Stainless Steel Static Mixers are widely used in chemical processing, water treatment, oil & gas, and general industrial applications where good corrosion resistance and mechanical strength are required.
The pressure drop curve is essential for proper pump sizing and overall system energy calculations.

For precise pressure drop values tailored to your exact flow rate, fluid properties, temperature, and specific stainless steel mixer configuration, consult the manufacturer for a custom performance curve.

Installation

Proper installation of Stainless Steel Static Mixers is essential for achieving optimal mixing performance, minimizing pressure drop, and ensuring long-term reliability.
Follow these procedures carefully to avoid misalignment, leaks, or reduced efficiency.

Installation Procedures for Stainless Steel Static Mixers

Step Installation Procedure Tools / Materials Required Safety & Important Notes
1 Verify the flow direction arrow on the static mixer body matches the actual process flow direction. None Incorrect orientation will significantly reduce mixing efficiency.
2 Ensure adequate straight pipe upstream and downstream. Recommended minimum is 5–10 pipe diameters upstream and 3–5 diameters downstream. Measuring tape Avoid installing immediately after elbows, valves, or pumps without sufficient straight run.
3 Clean all flange faces, gaskets, and bolt holes thoroughly. Use only new, compatible gaskets rated for the process fluid and temperature. Lint-free cloths, approved gasket material Old or damaged gaskets can cause leaks or contamination.
4 Align the mixer between the flanges. Install bolts and hand-tighten in a criss-cross pattern. Then torque bolts gradually to the manufacturer’s recommended values. Torque wrench, bolt lubricant Uneven torque can cause flange distortion or leaks.
5 For flanged models, ensure proper gasket compression. For butt-weld models, perform qualified welding and post-weld heat treatment if required. Welding equipment (for butt-weld) Use qualified welders and follow applicable piping codes (ASME B31.3, etc.).
6 Perform a pressure test and leak check on all connections after installation. Monitor for any signs of leakage during initial startup. Pressure testing equipment Test at 1.5× operating pressure or per site safety standards.
7 Document the installation details, including orientation, torque values, gasket type, and test results in the equipment log. Include photos of the installed mixer. Installation checklist, camera Record serial number and installation date for traceability.

Important Note: Stainless Steel Static Mixers must be installed by qualified personnel following applicable piping codes (ASME B31.3, etc.).
Proper alignment, correct flow direction, and correct torque values are critical for leak-free performance and optimal mixing.
Always refer to the manufacturer’s specific installation manual for your model.

Maintenance

Stainless Steel Static Mixers are extremely reliable because they have no moving parts. However, periodic inspection and cleaning are still necessary to maintain mixing efficiency, prevent buildup, and ensure long service life, especially when handling corrosive, sticky, or particulate-laden fluids.

Maintenance Procedures for Stainless Steel Static Mixers

Maintenance Task Procedure & Frequency
Daily / Visual Inspection • Check for any external leaks at flanges or welds
• Monitor pressure drop across the mixer (if gauges are installed)
• Listen for unusual noise or vibration during operation
Monthly Inspection • Record and trend pressure drop across the mixer
• Visually inspect accessible flanges and connections
• Check for signs of external corrosion on the housing
Quarterly Cleaning & Inspection • Perform a thorough flush or CIP cycle using compatible cleaning agents
• Inspect for internal scaling, polymer buildup, or particulate accumulation
• Check flange bolts for proper torque
Semi-Annual / Annual Deep Maintenance • Isolate and remove the mixer if removable-element design
• Mechanically clean internal elements (if accessible)
• Inspect mixing elements for erosion, corrosion, or damage
• Reinstall with new gaskets and torque to specification
After Process Changes or Shutdowns • Flush the mixer thoroughly before and after long shutdowns
• Inspect for hardened deposits or corrosion
• Verify pressure drop returns to normal baseline values
Documentation & Records • Maintain detailed logs of pressure drop trends, cleaning activities, and inspections
• Record any element replacements or repairs
• Update maintenance schedule based on observed buildup rates

Important Note: Stainless Steel Static Mixers are designed for long, trouble-free service with minimal maintenance.
Frequency of cleaning depends on the process fluid — sticky, polymerizing, or high-solids fluids require more frequent attention.
Always use cleaning agents compatible with 316L stainless steel and follow your plant’s safety and isolation procedures before any maintenance.

Q&A

Question Answer
What are Stainless Steel Static Mixers? Stainless Steel Static Mixers are inline mixing devices constructed from 304, 316, or 316L stainless steel. They use fixed internal helical or corrugated elements to thoroughly blend liquids, gases, or multiphase fluids without any moving parts.
Why choose stainless steel over PVC or CPVC static mixers? Stainless steel offers superior corrosion resistance, higher pressure and temperature ratings, greater mechanical strength, and longer service life in aggressive chemical, high-temperature, or high-pressure applications where plastic mixers would fail.
What are the main applications? Chemical dosing, pH adjustment, polymer blending, gas-liquid mixing, additive injection, water treatment, oil & gas processing, and petrochemical applications where corrosion resistance is critical.
What materials are available? Standard is 316L stainless steel for excellent corrosion resistance. 304 stainless steel is available for less aggressive environments. Duplex stainless, Hastelloy, or other exotic alloys can be supplied for extreme conditions.
Do they have moving parts? No. Like all static mixers, they contain only fixed internal elements, resulting in zero maintenance related to mechanical wear and very high reliability.
What pressure and temperature ratings are typical? Standard ratings go up to 600 PSI (41 bar) and temperatures from -320°F to 1200°F (-196°C to 649°C), depending on size, flange class, and material grade.
How do I choose the right number of mixing elements? More elements provide better mixing but increase pressure drop. The number is selected based on fluid viscosity, required mixing uniformity, flow rate, and process requirements. Manufacturers typically recommend 6–24 elements for most applications.
Are they suitable for corrosive fluids? Yes. 316L stainless steel provides excellent resistance to most acids, alkalis, and corrosive chemicals. For extremely aggressive media, higher alloys such as Hastelloy can be used.
What connection types are available? ANSI/DIN raised-face flanges, wafer style, and butt-weld ends are the most common. Custom connections can be fabricated upon request.
How much maintenance do they require? Very little. Routine maintenance is usually limited to external inspection, pressure drop monitoring, and periodic flushing or cleaning when handling sticky or high-solids fluids. There are no seals or bearings to replace.

Note: Stainless Steel Static Mixers are highly durable and reliable when properly sized and installed.
Material grade, number of elements, and connection type should be selected based on your specific process conditions, fluid properties, pressure, and temperature requirements.
Always consult the manufacturer for detailed sizing and material recommendations.

Advantages / Disadvantages

Advantages Disadvantages
  • Excellent corrosion resistance, especially with 316L stainless steel
  • High pressure and temperature capability (up to 600+ PSI and 1200°F)
  • Extremely durable and long service life in harsh environments
  • No moving parts – virtually maintenance-free
  • Wide range of sizes (½” to 24″) and connection types
  • Can handle aggressive chemicals, acids, and high-temperature fluids
  • Low pressure drop with efficient mixing performance
  • Higher initial cost compared to PVC or CPVC static mixers
  • Heavier than plastic mixers, requiring stronger pipe supports
  • Potential for crevice corrosion in certain chloride-rich environments if not properly specified
  • More expensive to fabricate in very large diameters
  • Not suitable for applications requiring electropolished sanitary finishes (unless specially ordered)
  • Can be damaged by highly abrasive slurries over time

Note: Stainless Steel Static Mixers are the preferred choice when corrosion resistance, high pressure/temperature ratings, or long-term durability are required.
While they have a higher upfront cost than plastic mixers, their robustness and minimal maintenance needs often result in lower total cost of ownership in demanding industrial processes.

Applications

Stainless Steel Static Mixers are widely used in demanding industrial processes where corrosion resistance, high pressure/temperature capability, and long-term reliability are essential.
Their robust construction makes them suitable for aggressive chemicals, high-temperature fluids, and continuous duty applications.

Applications of Stainless Steel Static Mixers

Industry / Application Typical Use Cases Purpose & Benefits
Chemical Processing Acid dilution, pH adjustment, catalyst mixing, solvent blending, reactor feed preparation Provides excellent corrosion resistance and uniform mixing of aggressive chemicals.
Petrochemical & Refining Additive injection, polymer blending, fuel oil mixing, gas-liquid contacting Handles high temperatures and corrosive hydrocarbons with reliable performance.
Oil & Gas Corrosion inhibitor injection, demulsifier dosing, methanol injection, produced water treatment Resists sour gas (H₂S) and high-pressure conditions common in upstream and midstream operations.
Power Generation Ammonia injection for SCR systems, cooling water chemical treatment, boiler feedwater conditioning Withstands high temperatures and provides reliable mixing in critical power plant systems.
Water & Wastewater Treatment Coagulant/flocculant mixing, pH control with acids or caustics, chlorine dioxide generation Offers long service life in chemically aggressive treatment environments.
Pharmaceutical & Intermediate Processes Solvent mixing, API intermediate blending, utility chemical dosing Provides contamination-free mixing where stainless steel is required for purity and cleanability.
Pulp & Paper Bleach mixing, chemical additive injection, pulp slurry conditioning Resists corrosive bleaching chemicals and high-temperature black liquor processes.

Stainless Steel Static Mixers are the go-to solution whenever plastic or coated mixers cannot withstand the process conditions.
Their superior strength and corrosion resistance make them ideal for continuous duty in harsh industrial environments.

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