Frequently asked questions


  Q. What is CSA B622-14 and how does it affect me?
A.  CSA B622-14 is a regulation requiring that an air intake shutoff device be installed on heavy duty tank trucks carrying dangerous goods. Learn more here.


Q.  What options for specific applications do you have?
A.  Roda Deaco manufactures several distinct lines of valves that fit virtually every application. If you need help specifying which valve is right for your engine, please call us today.


Q.  I am trying to install my valve and require a custom installation kit. Do you manufacture customized kits for specific applications?
A.  Yes, Roda Deaco has kits for many non-standard applications.  These kits save time and money on the installation process.


Q.  Do you do installations?
A.  Yes, We do installations out of our Edmonton facility. If you would like to book an installation, please call us today.


Q. Why would I need a positive air shutoff valve?
A.  Airborne hydrocarbons (combustible vapors) present a threat to the controlled operation of a diesel engine. These gases can be drawn into the air intake system, causing the engine to accelerate (over speed) out of control with the possibility of causing engine damage, explosion or fire. A positive air shut down valve will block the engine's air supply, shutting down the engine.


Q.  Why couldn't I use a fuel shutoff system instead?
A.  The airborne hydrocarbons become your engine's fuel source. Even though the conventional fuel source (diesel) has been cut off, the engine will continue to run on the gases carried in through the air intake system. In order to shut down the engine and prevent overspeed, the air intake system must be closed off.


Q.  What kind of controls should I use to actuate the valve ?
A.  We offer a wide variety of actuating systems. Many companies today require that your vehicle/machine/engine be equipped with a Fully Automatic System. Some companies may only require very basic manual controls. A product overview is available for our actuating systems in products & systems. It is best to confirm with your employer or customer what type of controls you require.


Q.  How does the Roda Deaco Valve air shutoff system work?
A.  The Roda Deaco Valve is mounted as close as possible to the engine's air intake manifold. When the valve is actuated, airflow to the engine is ‘cut off’ prohibiting any further engine operation.




Roda Deaco 
3230 - 97 Street
Edmonton, Alberta
Canada T6N 1K4
Tel +1 780 465 4429

United States and Latin America
Roda Deaco
8824 Fallbrook Dr.
Houston, TX 77064
Tel +1 780 465 4429

Europe, Middle East & Africa (excluding Germany)
Chalwyn - UK
Western Way, Bury St. Edmunds
Suffolk, IP33 3SZ  UK
Tel +44 (0) 1284 715739

Rondenbarg 25
22525 Hamburg
Tel +49 (40) 8537 1298
Asia Pacific
AMOT - Shanghai
Bd. 7A, No. 568, Longpan Rd.
Malu Jiading
Shanghai 201801 China
Tel +86 21 5910 4052
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