Electric gear motor
A 24V DC electric actuator opens and closes the gate. No compressed-air supply is needed.
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Automatic blast gates.
For dust and fume extraction.
Ecogate automatic blast gates open and close to control extraction airflow at machines and workstations. In an Ecogate On-Demand System, the greenBOX controls these gates and adjusts fan speed through a Power Master VFD, reducing fan electricity use as demand falls.
40,000+automatic gates sold globally
25+ yearsof industrial gate experience
Open + closelimit-switch confirmation
No air lineselectric actuation
PressureAir velocityAir volumeHow a Smart Gate works
A Smart Gate has an electric actuator that opens and closes the blade, limit switches that confirm its end positions, and a processor that measures duct pressure, air velocity, and air volume. Power and Modbus communication share one cable. A configurable off delay lets extraction continue after a machine stops to clear residual dust. In a Smart System, the greenBOX opens additional gates at non-operating machinery or bleed gates until the minimum airflow is reached.
Position confirmation
Open and close limit switches report the gate's actual end position to the control system.
Embedded measurement
The Smart Gate processor measures pressure, air velocity, and air volume, and reports the readings through Modbus RS485.
Fail-safe default
By default, a Smart Gate opens when it has 24V DC power but no active Modbus communication. Advanced settings can change this behavior; the configured response must suit the system.
Compare gate options
Compare gate options by material, control level, and construction. Pressure magnitude, process suitability, controller compatibility, and torque must be verified by Ecogate before a gate can be specified.
1. Application
Chips / coarse dustFume + mistFine dust / laboratoryOther / unsure
Duct diameter (inches)Select listed diameter2 inches3 inches4 inches5 inches6 inches7 inches8 inches9 inches10 inches12 inches14 inches16 inches18 inches20 inches22 inches24 inches26 inchesOther / custom / metric — reviewDuct pressureSelect pressure conditionNegative pressure (suction)Positive pressure
Magnetic material, heavy or fibrous dust, chemical compatibility, and pressure ratings require engineering review.
2. Control requirement
Open / closeMeasure airflowVariable positionLocal sensor / switch
3. Material
Butterfly gates are available only in stainless steel, in listed sizes from 2 to 26 inches. Rotating-blade gates remain available in zinc-plated or stainless steel. Confirm chemical and process suitability.
Zinc-plated steelStainless steel
4. Mounting
Quick-Fit adapters cover listed sizes 3–24 inches. The available range must also fit the selected gate body and material.
Angle flangeQuick-Fit / Nordfab
Preliminary selection
Enter application details
Enter duct diameter and pressure condition to check this selection. Final sizing and application approval require Ecogate engineering review.
Body styleNot confirmed
ActuatorSmart
ConstructionZinc-plated steel
ConnectionAngle flange
Available diameterEnter diameter and pressure
Gate-level feedbackPressure, velocity, volume
Control interfaceConfirm controller compatibility
This tool compares options only. Every configuration requires Ecogate engineering review; it does not confirm application suitability or a pressure rating. Butterfly gates are available only in stainless steel. Quick-Fit adapters are available from 3 to 24 inches. Fine dust, combustible material, corrosive processes, high vacuum, pressure, temperature, and installation geometry require engineering review.
Choose a gate body style.
Select the body for the collected material, sealing requirements, duct pressure, and installation space.
Rotating blade
For woodworking and general industrial dust collection with heavier particles. Not suitable for magnetic materials. Cannot be used in positive-pressure systems.
Sizes4 to 26 inches
MaterialsZinc-plated or stainless
Best atDust + larger particulate
InstallationHorizontal preferred
Keep at least three duct diameters from airflow modifiers upstream and downstream. In horizontal ductwork, one support above the gate is sufficient; support on both sides is optional. Mount the rotating-blade gate motor on top. For Smart and Precision Airflow gates, point the pressure-sensing tap toward the workstation, not the fan.
Butterfly style
A silicone-sealed body for fume, mist, high-vacuum, fine-dust, pharmaceutical, laboratory, and other seal-sensitive applications.
Sizes2 to 26 inches
MaterialsStainless steel only
Best atFume + mist + fine dust
PressurePositive or negative
Not intended for high dust concentrations, large debris, wood chips, strings, or fibrous material. Butterfly gates are available only in stainless steel.
Choose the control level
Select the gate body for the dust, fume, or mist being extracted and the duct pressure. Select the actuator for open/close control, airflow measurement, or proportional blade positioning.
Actuator
Position confirmation
Modbus network
Airflow measurement
Variable position
Standalone operation for one gate or a few machines
A Smart Gate can be factory-configured for local operation without a greenBOX. It responds to a workstation activity sensor, dry contact, relay, PLC, timer, or switch and may later be integrated into a complete Ecogate system only after Ecogate reviews and changes its Standalone configuration for controller operation. Standalone local logic overrides greenBOX Modbus commands.
- 24V DC power
- Sensor-driven opening
- Dry-contact control
- PLC or relay input
- Rotating blade or butterfly body
- Smart System integration requires configuration review
Match the gate to the process
Choose the gate for the material it will collect, particle size and concentration, sealing needs, pressure, and required control.
Woodworking dust
Rotating blade gates handle sawdust and chips in woodworking collection ducts.
Start with: rotating blade
Metalworking dust
Rotating-blade bodies suit many general dust loads. Magnetic materials require a different gate selection; fine dust and process-specific hazards require engineering review.
Start with: rotating blade or reviewed butterfly
Welding fume
Sealed closure, flexible orientation, and suitability for lower-particulate fume extraction.
Start with: butterfly style
Oil mist + chemical fume
A silicone-sealed butterfly body works in positive- or negative-pressure environments where sealing matters.
Start with: butterfly style
Pharmaceutical + laboratory
For low-particulate pharmaceutical and laboratory extraction, consider a stainless butterfly gate after confirming material compatibility and process requirements. Choose Precision Airflow only when proportional blade positioning is required.
Start with: body and material suitability review
Food + packaging
Stainless butterfly configurations are suited to lower-particulate, fine-dust, and seal-sensitive production areas.
Start with: stainless butterfly
Installation and operating requirements
Electric actuation
The 24V DC gear motor operates without compressed-air lines or valves.
Verified movement
Limit switches confirm when the blade reaches its open and closed end positions.
Networked installation
Smart and Precision Airflow actuators daisy-chain power and Modbus communication through Ecogate Master Cable.
Pressure sensor selection
Vacuum-system gates require 50 kPa pressure sensors. Dust-collection gates use 10 kPa sensors. These are sensor ranges, not gate-body operating-pressure ratings. Specify the application when ordering so Ecogate can confirm the correct actuator.
High-power option
Rotating-blade gates 18 inches and larger can use a higher-torque Smart actuator where pressure and blade area require it.
Industrial enclosure
The actuator enclosure is NEMA 12 and dust-proof. It is not weather-protected. Install indoors only.
Fit the gate to the duct
Gate bodies are available in imperial and selected metric diameters, with angle-flange or Quick-Fit duct connections. Use the dimension drawings and CAD files to check fit before installation.
Butterfly range2 to 26 inches
Rotating-blade range4 to 26 inches
Metric diameters120, 140, 160 mm
MountingAngle flange or Quick-Fit
Standard operating range is 14°F to 113°F (-10°C to 45°C). An optional low-temperature grease extends operation down to -40°F (-40°C). Confirm pressure, temperature, material, and installation geometry before ordering.
Smart Gate purchase questions
The decisions that most often affect gate selection, controls, and installation.
No. Smart and Precision Airflow actuators measure duct pressure, air velocity, and air volume. Standard actuators provide open and close automation with limit-switch confirmation but do not include a processor, Modbus communication, or airflow measurement.
Yes, when a Smart Gate is factory-configured for Standalone operation. It can open and close from a workstation activity sensor, dry contact, relay, PLC, timer, or switch while using a 24V DC power supply.
Butterfly gates can be used for fume, mist, laboratory, pharmaceutical, food-packaging, fine-dust, high-vacuum, or seal-sensitive applications. They are not suited to high dust concentrations, large chips, strings, or fibrous material.
It adds proportional blade positioning in 1% increments to the Smart Gate's measurement and Modbus capabilities. Compatible current systems can use it for adjustable bleed gates and control based on pressure, air velocity, air volume, or temperature. Confirm controller and software compatibility with Ecogate.
Yes. Ecogate provides Modbus RTU integration guidance for customers controlling Smart Gates with their own PLC. Power supply sizing, gate behavior, safety logic, and communication-loss behavior should be reviewed as part of that integration.
Ask Ecogate to help select your gates.
Send Ecogate the duct diameter, collected material, pressure, required control, duct connection type, and operating conditions. An engineer can confirm the gate body and actuator for your application.
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