Emcara Gas Development Inc., Canadian designer and manufacturer of alternative fuel systems, has developed a new pressure relief device (PRD) for CNG systems that have a working pressure of 5,000psi — the Viper PRD. As for all Emcara PRD products, the Viper has the patent long-trigger technology that allows for full protection coverage of a cylinder or a bank of cylinders (tanks) in a system of any size.
In addition to the existing benefits of the technology, Emcara explains that many upgrades were made to address concerns about the protection of CNG systems in the industry. The Viper PRD also has the added benefit of a higher flow rate when venting in the case of a fire. This allows gas to escape at a faster and more efficient manner, as it is extremely important to get the gas out as quickly as possible avoiding any possibility of a tank rupture.
The internal mechanism utilized in this model of PRD is extremely robust, which increases its performance over the toughest of road conditions, this also includes enhanced corrosion protection.
The Viper PRD trigger can range from 4’ to 45’ in length. The trigger line also allows for detection of smaller fires over the length of the line. Localized fires as small as 5” can now be detected in some conditions.
The Viper PRD is fully certified to ANSI/CSA PRD1.2013* and is ready for use in the market.
*ANSI/CSA PRD1.2013 currently offers only a 3,600 psi certification
(Source: Emcara Gas Development Inc.)