Pressure Relief Devices
Superior performance, higher reliability, and greater safety with glass-blub PRD technology
The US Department of Transportation requires all high-pressure gas storage systems have a pressure relief device (PRD) or thermal relief device (TRD) in the event of a fire and the resulting dangerous buildup of pressure that can rupture a cylinder. The traditional option is based on eutectic metal in an orifice. When a fire occurs, the metal will melt, thereby opening the vent line to enable a rapid release of gas.
There are two key problems with this option. Over time, the eutectic metal can be forced out of the orifice which can lead to a premature release of gas. Secondly, if a fire does occur and the metal melts, not all of the molten material can be forced out of the orifice. The Joule-Thompson Effect can resolidify the metal inside the vent line, blocking it again.
BayoTech’s proprietary, patent-protected CG9 PRD solution does away with the eutectic metal and replaces the orifice barrier with a more reliable glass sphere. The glass bulb cannot be extruded due to long periods of high pressure. Further, when it bursts due to heat and pressure, there is no danger of residual blockage of the venting process.