The BAUER XXL™ SERIES CNG systems have been designed to provide maximum flow at very low inlet pressures, ranging from 5 psig up to 25 psig (although the systems are also capable of taking higher inlet pressures). Maximizing CNG flow at low inlet pressures is accomplished by adding another stage of compression in front of our standard C23.12 M-SERIES, C26.12 X-FILL, and C52.12 X-FILL booster compressor systems for CNG.