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Effox-Flextor Mader
Effox-Flextor-Mader (EFM) is the international leader in the design and manufacture of dampers and expansion joints for use in flue gas and process air handling systems. Our team includes a skilled staff of engineers, designers, fabricators, and field service personnel to ensure the highest quality engineered-to-order products.

Around the globe, our dampers and expansion joints are being used in systems that clean polluting emissions and contribute to reducing greenhouse gases. We are known for our commitment to quality. We offer engineered-to-order solutions that meet the most demanding specifications for the world’s most stringent customers.
Back
Main Menu
Expansion Joints
Effox-Flextor Mader (EFM) is the recognized leader in providing non-metallic Expansion Joints to the utility and industrial markets around the world. With custom engineered designs for each application, EFM has provided reliable flexible solutions for service from -40°F to 2100°F (-40°C to 1149°C).

Our EFLEX™ expansion joints reflect the highest engineering standards and professional workmanship in the power generation and heavy industrial market. The EFM team provides customer service and technical support from project inception to completion.
  • Over 100 years of combined experience in the Expansion Joint Industry
  • DuPont Certified Supplier of VITON® Fluoroelastomer Expansion Joints
  • Long time contributing member of the FSA (over 25 years)
NON-METALLIC EXPANSION JOINTS
EFM is the world leader in the design and supply of non-metallic expansion joints. We offer designs specifically engineered for every application and have supplied expansion joints in Boilers, Incinerators, Fans, Environmental Control Equipment such as SCRs, FGD and Fabric Filters.

Learn More

.........
Back
Main Menu
Dampers
With over 35 years of experience, Effox-Flextor-Mader offers time tested robust dampers to achieve a 20+ year low maintenance design life. Constructed with carbon steel, stainless steel, alloy, and/or corrosion resistant materials our dampers are capable of withstanding temperatures up to 1800°F (982°C) and the most chemically punishing environments. Our engineering and design team is involved with every project to ensure the structural and dynamic integrity of our products.
BUTTERFLY DAMPERS
Effox-Flextor-Mader (EFM) has installed Butterfly Dampers from 12 inches (305 mm) in diameter to greater than 144 inches (3658 mm) in diameter. Our Butterfly Dampers can be found in some of the harshest environments where abrasion, corrosion and dust loading are prevalent

Learn More

DIVERTER / STACK ISOLATION DAMPERS
Effox-Flextor-Mader (EFM) has extensive experience in the design and supply of toggle and pivot style Diverter Dampers for HRSG, waste heat recovery, gas turbine, and other systems that require diversion of the gas stream. We have designed and installed diverter dampers in systems ranging from small engine units to the largest turbines in the world such as the GE Frame 7 FA & 9 FA.

Learn More

GUILLOTINE / SLIDE GATE DAMPERS
Effox-Flextor-Mader (EFM) manufactures heavy-duty low-leak slide gate and zero-leak Slide Gate Dampers to provide isolation for flue gas and air systems. Slide gates, also referred to as Guillotine Dampers , are required to isolate systems for maintenance or for bypass purposes.

EFM has supplied slide gate dampers in the largest ducting systems in the industry. We have supplied gates with duct openings of 25 feet (7.6 m) wide and 35 feet (10.7 m) tall. Our zero leak guillotine dampers can be pressure and temperature tested in our facilities to verify leakage at system design conditions.

Learn More

LOUVER DAMPERS
Effox-Flextor-Mader (EFM) offers several styles of Louver Dampers offers several styles of louver dampers to meet your application and system specifications.
Our Louver Dampers are offered with a parallel blade or opposed blade design. Parallel louvers are primarily used for system isolation. EFM parallel blade louvers are used around the world in applications for bypass capability and tight shut off for the process & utility industries.

Learn More

METAL SEAT RTO DAMPERS
Effox-Flextor-Mader (EFM) manufactures high-performance Metal Seat RTO Dampers for elevated temperature applications in thermal oxidizers and dirty abrasive environments such as pulverizer outlet dampers. Utilizing a sectioned adjustable metal seal and machined blade seating surface these dampers provide tight shutoff for critical applications.

Learn More

DIVERTER DAMPERS
EFM has extensive experience in the design and supply of toggle and pivot style diverter dampers for HRSG, waste heat recovery, gas turbine, and other systems that require diversion of the gas stream.

Learn More

POPPET DAMPERS
Effox-Flextor-Mader (EFM) manufactures Poppet Dampers which are ideal for applications that require quick cycling time and tight shutoff. Poppet dampers are used for isolation capabilities for fabric filter applications and incineration systems. They are engineered to control the reverse gas flow, outlet flow, and bypass flow of gases, thereby enhancing filtration.

Learn More

RADIAL / INLET VANE DAMPERS
Radial Vane Dampers from Effox-Flextor-Mader (EFM) Radial vane dampers are used primarily on the inlet of centrifugal fans to direct flow and assist in pre-spinning the flow into the wheel. Radial Vanes are commonly referred to as Variable Inlet Vanes (VIV). The use of a radial vane damper enhances the performance of the fan by:
  • Introducing swirl into the inlet of the fan in the direction of rotation
  • Changing the fan curve as the damper moves
  • Eliminating low-volume stalling of the fan


Learn More

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Back
Main Menu
Parts and Services
EFM offers a full suite of services around the world. Through these services, EFM helps customers with maximizing the availability, reliability and efficiency of their operating assets.
  • TURNKEY INSTALLATION & START-UP
  • MAINTENANCE
  • DESIGN AND ENGINEERING
  • AFTERMARKET SERVICES

Learn More
Main Menu
Effox-Flextor Mader
Effox-Flextor-Mader (EFM) is the international leader in the design and manufacture of dampers and expansion joints for use in flue gas and process air handling systems. Our team includes a skilled staff of engineers, designers, fabricators, and field service personnel to ensure the highest quality engineered-to-order products.

Around the globe, our dampers and expansion joints are being used in systems that clean polluting emissions and contribute to reducing greenhouse gases. We are known for our commitment to quality. We offer engineered-to-order solutions that meet the most demanding specifications for the world’s most stringent customers.
Back
Main Menu
Expansion Joints
Effox-Flextor Mader (EFM) is the recognized leader in providing non-metallic Expansion Joints to the utility and industrial markets around the world. With custom engineered designs for each application, EFM has provided reliable flexible solutions for service from -40°F to 2100°F (-40°C to 1149°C).

Our EFLEX™ expansion joints reflect the highest engineering standards and professional workmanship in the power generation and heavy industrial market. The EFM team provides customer service and technical support from project inception to completion.
  • Over 100 years of combined experience in the Expansion Joint Industry
  • DuPont Certified Supplier of VITON® Fluoroelastomer Expansion Joints
  • Long time contributing member of the FSA (over 25 years)
NON-METALLIC EXPANSION JOINTS
EFM is the world leader in the design and supply of non-metallic expansion joints. We offer designs specifically engineered for every application and have supplied expansion joints in Boilers, Incinerators, Fans, Environmental Control Equipment such as SCRs, FGD and Fabric Filters.

Learn More

.........
Back
Main Menu
Dampers
With over 35 years of experience, Effox-Flextor-Mader offers time tested robust dampers to achieve a 20+ year low maintenance design life. Constructed with carbon steel, stainless steel, alloy, and/or corrosion resistant materials our dampers are capable of withstanding temperatures up to 1800°F (982°C) and the most chemically punishing environments. Our engineering and design team is involved with every project to ensure the structural and dynamic integrity of our products.
BUTTERFLY DAMPERS
Effox-Flextor-Mader (EFM) has installed Butterfly Dampers from 12 inches (305 mm) in diameter to greater than 144 inches (3658 mm) in diameter. Our Butterfly Dampers can be found in some of the harshest environments where abrasion, corrosion and dust loading are prevalent

Learn More

DIVERTER / STACK ISOLATION DAMPERS
Effox-Flextor-Mader (EFM) has extensive experience in the design and supply of toggle and pivot style Diverter Dampers for HRSG, waste heat recovery, gas turbine, and other systems that require diversion of the gas stream. We have designed and installed diverter dampers in systems ranging from small engine units to the largest turbines in the world such as the GE Frame 7 FA & 9 FA.

Learn More

GUILLOTINE / SLIDE GATE DAMPERS
Effox-Flextor-Mader (EFM) manufactures heavy-duty low-leak slide gate and zero-leak Slide Gate Dampers to provide isolation for flue gas and air systems. Slide gates, also referred to as Guillotine Dampers , are required to isolate systems for maintenance or for bypass purposes.

EFM has supplied slide gate dampers in the largest ducting systems in the industry. We have supplied gates with duct openings of 25 feet (7.6 m) wide and 35 feet (10.7 m) tall. Our zero leak guillotine dampers can be pressure and temperature tested in our facilities to verify leakage at system design conditions.

Learn More

LOUVER DAMPERS
Effox-Flextor-Mader (EFM) offers several styles of Louver Dampers offers several styles of louver dampers to meet your application and system specifications.
Our Louver Dampers are offered with a parallel blade or opposed blade design. Parallel louvers are primarily used for system isolation. EFM parallel blade louvers are used around the world in applications for bypass capability and tight shut off for the process & utility industries.

Learn More

METAL SEAT RTO DAMPERS
Effox-Flextor-Mader (EFM) manufactures high-performance Metal Seat RTO Dampers for elevated temperature applications in thermal oxidizers and dirty abrasive environments such as pulverizer outlet dampers. Utilizing a sectioned adjustable metal seal and machined blade seating surface these dampers provide tight shutoff for critical applications.

Learn More

DIVERTER DAMPERS
EFM has extensive experience in the design and supply of toggle and pivot style diverter dampers for HRSG, waste heat recovery, gas turbine, and other systems that require diversion of the gas stream.

Learn More

POPPET DAMPERS
Effox-Flextor-Mader (EFM) manufactures Poppet Dampers which are ideal for applications that require quick cycling time and tight shutoff. Poppet dampers are used for isolation capabilities for fabric filter applications and incineration systems. They are engineered to control the reverse gas flow, outlet flow, and bypass flow of gases, thereby enhancing filtration.

Learn More

RADIAL / INLET VANE DAMPERS
Radial Vane Dampers from Effox-Flextor-Mader (EFM) Radial vane dampers are used primarily on the inlet of centrifugal fans to direct flow and assist in pre-spinning the flow into the wheel. Radial Vanes are commonly referred to as Variable Inlet Vanes (VIV). The use of a radial vane damper enhances the performance of the fan by:
  • Introducing swirl into the inlet of the fan in the direction of rotation
  • Changing the fan curve as the damper moves
  • Eliminating low-volume stalling of the fan


Learn More

.........
Back
Main Menu
Parts and Services
EFM offers a full suite of services around the world. Through these services, EFM helps customers with maximizing the availability, reliability and efficiency of their operating assets.
  • TURNKEY INSTALLATION & START-UP
  • MAINTENANCE
  • DESIGN AND ENGINEERING
  • AFTERMARKET SERVICES

Learn More
Main Menu
Effox-Flextor Mader
Effox-Flextor-Mader (EFM) is the international leader in the design and manufacture of dampers and expansion joints for use in flue gas and process air handling systems. Our team includes a skilled staff of engineers, designers, fabricators, and field service personnel to ensure the highest quality engineered-to-order products.

Around the globe, our dampers and expansion joints are being used in systems that clean polluting emissions and contribute to reducing greenhouse gases. We are known for our commitment to quality. We offer engineered-to-order solutions that meet the most demanding specifications for the world’s most stringent customers.
Back
Main Menu
Expansion Joints
Effox-Flextor Mader (EFM) is the recognized leader in providing non-metallic Expansion Joints to the utility and industrial markets around the world. With custom engineered designs for each application, EFM has provided reliable flexible solutions for service from -40°F to 2100°F (-40°C to 1149°C).

Our EFLEX™ expansion joints reflect the highest engineering standards and professional workmanship in the power generation and heavy industrial market. The EFM team provides customer service and technical support from project inception to completion.
  • Over 100 years of combined experience in the Expansion Joint Industry
  • DuPont Certified Supplier of VITON® Fluoroelastomer Expansion Joints
  • Long time contributing member of the FSA (over 25 years)
NON-METALLIC EXPANSION JOINTS
EFM is the world leader in the design and supply of non-metallic expansion joints. We offer designs specifically engineered for every application and have supplied expansion joints in Boilers, Incinerators, Fans, Environmental Control Equipment such as SCRs, FGD and Fabric Filters.

Learn More

.........
Back
Main Menu
Dampers
With over 35 years of experience, Effox-Flextor-Mader offers time tested robust dampers to achieve a 20+ year low maintenance design life. Constructed with carbon steel, stainless steel, alloy, and/or corrosion resistant materials our dampers are capable of withstanding temperatures up to 1800°F (982°C) and the most chemically punishing environments. Our engineering and design team is involved with every project to ensure the structural and dynamic integrity of our products.
BUTTERFLY DAMPERS
Effox-Flextor-Mader (EFM) has installed Butterfly Dampers from 12 inches (305 mm) in diameter to greater than 144 inches (3658 mm) in diameter. Our Butterfly Dampers can be found in some of the harshest environments where abrasion, corrosion and dust loading are prevalent

Learn More

DIVERTER / STACK ISOLATION DAMPERS
Effox-Flextor-Mader (EFM) has extensive experience in the design and supply of toggle and pivot style Diverter Dampers for HRSG, waste heat recovery, gas turbine, and other systems that require diversion of the gas stream. We have designed and installed diverter dampers in systems ranging from small engine units to the largest turbines in the world such as the GE Frame 7 FA & 9 FA.

Learn More

GUILLOTINE / SLIDE GATE DAMPERS
Effox-Flextor-Mader (EFM) manufactures heavy-duty low-leak slide gate and zero-leak Slide Gate Dampers to provide isolation for flue gas and air systems. Slide gates, also referred to as Guillotine Dampers , are required to isolate systems for maintenance or for bypass purposes.

EFM has supplied slide gate dampers in the largest ducting systems in the industry. We have supplied gates with duct openings of 25 feet (7.6 m) wide and 35 feet (10.7 m) tall. Our zero leak guillotine dampers can be pressure and temperature tested in our facilities to verify leakage at system design conditions.

Learn More

LOUVER DAMPERS
Effox-Flextor-Mader (EFM) offers several styles of Louver Dampers offers several styles of louver dampers to meet your application and system specifications.
Our Louver Dampers are offered with a parallel blade or opposed blade design. Parallel louvers are primarily used for system isolation. EFM parallel blade louvers are used around the world in applications for bypass capability and tight shut off for the process & utility industries.

Learn More

METAL SEAT RTO DAMPERS
Effox-Flextor-Mader (EFM) manufactures high-performance Metal Seat RTO Dampers for elevated temperature applications in thermal oxidizers and dirty abrasive environments such as pulverizer outlet dampers. Utilizing a sectioned adjustable metal seal and machined blade seating surface these dampers provide tight shutoff for critical applications.

Learn More

DIVERTER DAMPERS
EFM has extensive experience in the design and supply of toggle and pivot style diverter dampers for HRSG, waste heat recovery, gas turbine, and other systems that require diversion of the gas stream.

Learn More

POPPET DAMPERS
Effox-Flextor-Mader (EFM) manufactures Poppet Dampers which are ideal for applications that require quick cycling time and tight shutoff. Poppet dampers are used for isolation capabilities for fabric filter applications and incineration systems. They are engineered to control the reverse gas flow, outlet flow, and bypass flow of gases, thereby enhancing filtration.

Learn More

RADIAL / INLET VANE DAMPERS
Radial Vane Dampers from Effox-Flextor-Mader (EFM) Radial vane dampers are used primarily on the inlet of centrifugal fans to direct flow and assist in pre-spinning the flow into the wheel. Radial Vanes are commonly referred to as Variable Inlet Vanes (VIV). The use of a radial vane damper enhances the performance of the fan by:
  • Introducing swirl into the inlet of the fan in the direction of rotation
  • Changing the fan curve as the damper moves
  • Eliminating low-volume stalling of the fan


Learn More

.........
Back
Main Menu
Parts and Services
EFM offers a full suite of services around the world. Through these services, EFM helps customers with maximizing the availability, reliability and efficiency of their operating assets.
  • TURNKEY INSTALLATION & START-UP
  • MAINTENANCE
  • DESIGN AND ENGINEERING
  • AFTERMARKET SERVICES

Learn More