Bruest - Model LD CNG - Catalytic Heater - Brochure

While natural gas is normally transmitted in pipelines at pressures up to 1400 PSIG, Compressed Natural Gas (CNG) is normally stored in pressure vessels up to 3600 PSIG. For CNG to be usable, it must be decompressed or ‘let down’ to a more manageable pressure. This is a crucial part of the CNG PRS (Pressure Reduction System) process. Due to the Joules Thompson Effect, where gas temperature will drop when the pressure drops, this letdown of pressure means heat must be put back into the gas stream to prevent freezing of sensitive instruments and pipelines. Each of Bruest’s LD series CNG Let Down Systems begins with Bruest’s proven catalytic heaters. These heaters are rated for operation in Class I Division 1 or Division 2 locations. Furthermore, as catalytic heaters have virtually zero emissions, the LD series letdown stations are not only safe but environmentally friendly.