
Low pressure systems provide OSHA, CGA and NFPA recognized, Grade-D or better quality breathing air at a pressure ranging from 60 to 200 PSIG. (PSIG means pounds per square inch measured on gauge, where the gauge reads zero at normal atmospheric pressure.) Fixed manifold systems and flexible hoses are used to carry the cleaned and purified compressed air to the breather(s).
Each breather must wear a Type-C breathing apparatus, which regulates the flow of compressed air through a mask, hood or suit. The amount of airflow per person, measured in SCFM (Standard Cubic Feet Per Minute) varies with the style and manufacturer of the Type-C delivery apparatus. Low pressure breathing air systems are typically employed in situations where the breather will require a continuous supply of air on a constant basis. The breather must be able to accommodate the limitations to movement that result from the compressed air feed line he is attached to.
Industrial applications for breathing air typically use low pressure supply for contaminated work station environments. Medical applications supply low pressure breathing air to patients. Low pressure breathing air is much less expensive to use and maintain, when compared with high pressure alternatives, per SCFM delivered