Fixed Dust Collectors

Fixed Dust Collector Sizing

Custom Designs. Meeting Your Site Needs

Our fixed dust collectors are all designed by our in-house engineering team to meet specific applications and site conditions. A combination of airflow, air velocity, pressure, resistance and air-to-cloth ratios determines the appropriate size and ducting configuration. Incorrect sizing can result in high emissions, lowered productivity, reduced filter life and a hazardous or unsafe working environment.

Airflow diagram showing how much airflow is required for fixed dust collectors

Airflow. How much air the system needs to move.

The larger the space where extraction is required, or the greater the number of dust collection pick up points, the greater the airflow required.

Variable Speed Drives (VSD) or Variable Frequency Drives (VFD) can be used to adjust the airflow when there are fluctuating site conditions. This can help to reduce power consumption.

Air Velocity Diagram showing the speed the air needs to move for fixed dust collectors

Air Velocity. The speed the air needs to move.

For dust to travel suspended in air it must travel at or above the minimum conveying velocity for that product. There are also risks such as explosion, toxicity and abrasion associated with certain dust types to be taken into account.

Low air velocity can cause dust build up within ducting and lead to poor dust capture and fires. This can also create an increased explosion hazard. High air velocity can cause premature wear in the duct work by means of abrasion or can break up delicate conveyed products such as food and pharmaceuticals.

Air to cloth ratio diagram shows how to calculate the number of filters required for fixed dust collectors

Air-to-Cloth Ratio. Volumetric flow rate of air through a dust collector’s intake divided by the total cloth area (m²) in the filters.

For dust collectors to capture dust from the air-stream, they must have a sufficient number of filters. Maintaining an adequate air-to-cloth ratio enables the dust collector to operate at peak efficiency.

Dust types and the amount of dust per cubic meter are all determining factors.

Pressure and3 resistance diagram showing the pressure and resistance across the dust collection system

Pressure and Resistance. Pressure and resistance across the dust collection system.

The fan used in the dust collector must supply enough suction to overcome duct and fixed pressure losses from the collection point(s), through the dust collector and filters before exhausting clean air out of the system.

Resistance to airflow is created by the filters and ducting along with the dust being transported.

JMS F-Series Fixed Dust Collectors

Modular Design. Flexible Solutions

Our fixed unit dust collectors offer a long-term and cost-effective solution to dust and fume control and are designed to handle high-volume dust loads. JMS F-Series dust collectors consist of a centrifugal fan, dirty air intake, high efficiency filters, reverse pulse filter cleaning system, dust discharge system, clean air exhaust and fan silencer.

The JMS F-Series is based on a modular design which provides the flexibility to size the dust control units in relation to the required air volumes. Units range form 6,000m3/hr to 400,000m3/hr. Dust collectors can be combined to provide greater air flow.
Our engineering team can take site and process drawings to determine air flow requirements and design ducting configuration to achieve a total dust control solution.

Key Features

Fixed Dust Collector Key Features

Air Intakes

JMS F-Series dust collectors can be designed with single or multiple air intake options depending on the design of the ducting, application and site conditions.

Configuration options: Single, dual or multiple air intakes.


High efficiency filter cartridges provide filtration of both dust and diesel particulates. Baffle plates distribute air throughout the dust collector ensuring an even wear of filters.

Configuration options: The number of filters required is dependent on the air-to-cloth ratio required for the specific application.

Filtration Efficiency   

Certified air flow performance and filtration testing has been conducted both above and below ground as part of rigorous performance verification and certification processes and shows a collection efficiency of 99.99% at 0.067 micron.

Filter Maintenance

The filters can be easily accessed through the filter access doors for efficient filter maintenance to maximise machine up-times. Filter life is dependent on dust type, dust loading and application.

Changing the filters at the optimum time ensures the dust collector does not draw more kW than required to maintain air flows.

Depending on the height of the dust collector customised maintenance access platforms can be designed and manufactured.

Reverse Pulse Cleaning System

JMS F-Series dust collectors are connected to an external compressor to provide air for the on-board reverse pulse filter cleaning system, using the plant air receiver tank and attachment kit fitted to the unit.

Jet tubes direct air inside the filters which blasts air from the inside of each filter, effectively removing dust build-up and prevents the filters from clogging. The adjustable timer allows the pressure and frequency of pulse cleaning to be set to the application and dust loading. This reduces the number of filter changes required.

Centrifugal Fan

Centrifugal fans offer superior energy efficiency and enhanced durability, allowing them to operate in even the most corrosive environment. Centrifugal fans provide the required air volume using one motor and one impeller to develop system pressure.

Configuration options: Centrifugal fans are custom designed to provide optimum air volume and pressure to suit specific applications. Fans can be ground or roof mounted depending on the application and space constraints.

Fan Silencer

Exhausted air passes through silencers to reduce noise pollution.

Configuration options: Custom exhaust silencers can be designed and manufactured to meet site acoustic requirements. Depending on the site and application an exhaust stack my also be required.

Dust Discharge System

The hopper collects the heavy dust particulates released from the filters. The dust type will determine the number and shape of the hopper(s).
For standard applications a pyramid hopper is used and discharges via a slide gate to a steel recovery bin or bulker bag.

Configuration options: If collected dust doesn’t ‘flow’, a rotary valve coupled with a pneumatic aerator, that automatically cleans the hopper can be installed for more efficient discharge.

For high volumes a trough hopper can be used with an auger and rotary valve that can also serve to convey materials to a separate discharge location, for example onto a conveyor within a processing plant.

Programmable Logic Computer (PLC)

A simple one-button start-up and shut-down sequence starts and stops all critical components in a programmed order which increases the efficiency of the unit and provides additional safety for workers.

Configuration option: A touch-button or touch-screen HMI Interface can be added if additional functionality is required.

CANbus System

Configuration option: A CANbus system enhances the speed, flexibility, and reliability in communication along with supporting effective troubleshooting and maintenance from off-site. The system retains key alarm logs so that performance and troubleshooting can be undertaken as required.


Air Flow Meter
The air flow meter monitors the air flow from the exhaust.

Real Time Emissions Monitoring
Real-time particle detectors examine emissions coming out of the clean air exhaust and can be tuned to meet the requirements of any given site. The unit can be programmed to alarm when levels are being approached and exceeded.

Fan and Differential Pressure Gauges
The fan pressure monitor alerts the operator if it is necessary to turn the system volume up due to a long duct run or if there is a blockage in the ducting.
The differential pressure monitor alerts the operator if filters are blocked or if there are higher than normal dust loads.

Safety Features

Grydale JMS F-Series dust collectors offer a number of features that focus on maximising the health and safety of workers along with providing a safe working environment by controlling dust and fumes.

Emergency Stop System
Emergency stop buttons are located on the unit enabling anyone to immediately halt the machine.

Explosion Vents
Configuration option: When dealing with combustible products, explosion vents can be added to the filter house to mitigate these risks.
Operation and Maintenance Lights
Configuration option: Operational and maintenance lights can be fitted in key locations on the unit, giving operators and maintenance workers clear visibility of components and/or to illuminate working spaces.

Health and Safety. Driving Demand for Dust Control Solutions

Market demand for dust control solutions is escalating globally and health and safety experts are focusing on increasing dust control regulations due to the potentially hazardous consequences on health and safety of workers.

Dusts that can cause diseases when inhaled are found in a large number of industries. Hazardous dusts include but are not limited to: asbestos, crystalline silica, hard metals, aluminium, bagasse, cotton, hay, straw and grains. Silicosis is the most common occupational lung disease worldwide, and often referred to as the ‘modern day asbestos’.

The risk of dust related diseases increases with increased exposure. Workplace Health and Safety (WHS) legislation now places strict requirements for the management of dust through Workplace Exposure Limits (WEL). Globally, the WEL for specific dust types do vary, but regulations are being periodically reviewed and updated to take into account current scientific evidence linking exposure to disease.

Grydale. About Us

Grydale are an Australian Original Equipment Manufacturer (OEM) of a range of industrial dust collection equipment.

Our team has over 15 years’ experience designing and manufacturing industrial dust collectors. We focus on adding value through a total service offering, providing ventilation design, manufacture, implementation, ongoing project management and onsite maintenance and technical support.

Our expertise

We have adopted an innovative approach to provide customers with state-of-the-art designed solutions. As part of designing and manufacturing our range of fixed unit dust collection systems, we provide the following:

  • Dust collection system specification and design.
  • Ducting specification and Computational Fluid Dynamics (CFD) design.
  • Manufacture and installation of dust collection systems.
  • Dust collector technical product support, servicing, maintenance and spare parts.

Case Studies

More Information? Contact Us. 

If you would like more information regarding our fixed dust collectors please complete the form below.

We try to respond to requests on the same business day, however if your enquiry is urgent please call our team on +61 1300 929 349. Our office hours are between 07:00 and 17:00 (AEST) Monday to Friday.