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The HRD system is a special type of extinguishing apparatus that delivers an extremely fast application (High-Rate Discharge) of extinguishing agent into to a protected device, suppressing an incipient explosion or explosive combustion.

Using highly responsive detectors and a state-of-the-art control system, the system is able to detect an explosion in milliseconds. This signal activates the HRD containers which are equipped with fast-acting nozzles that have been meticulously designed to distribute the extinguishing powder as efficiently as possible.

By suppressing explosive combustion at its inception, the HRD system prevents the development of intolerable explosion pressures. The process lasts only milliseconds. 

To protect the whole process effectively, it is common to supplement the HRD system with a HRD barrier, which prevents the transmission of the explosion to subsequent parts of the technology. The HRD system is available certified according to EN 14373 and FM 5700. 


The HRD system is a complete package, with HRD container bottles, a control unit (CONEX) and detectors that will send the signal to the bottles to initiate the extinguishing nozzles. The HRD bottles are capable of extremely fast discharge which ensures rapid acting protection of the process.

explosion suppression systems
HRD process of suppression


The HRD system for explosion suppression is a highly reliable system that provides a solution for indoor and outdoor applications, and can protect toxic and otherwise dangerous materials. It is suitable for a variety of applications including filters/filtration units, industrial vacuum cleaners, silos, mills, dryers, cyclones, conveyors, elevators, mixers, crushers and more. 

Pressure detectors or spark detectors constantly monitor the application’s operating conditions and are able to immediately detect the start of an explosion in the early stages. The detectors then send a signal to the control unit which in turn initiate the suppressants discharge for rapid extinguishing. Not only does the control unit handle all signals, but it also serves as a user interface for the operating personnel. The HRD bottles themselves allow for easy handling, simple maintenance and rapid and effective explosion suppression.


We are waiting to discuss your explosion safety requirements, so don’t hesitate to get in touch. Whether you would like to receive a quotation or you are just looking for more information, we are here to help.




0208 243 8914