CHZero uses innovative compressor systems specially designed for Pipeline Evacuation and Cross-Compression. One such technology is the PS175 compressor. It is a rotary screw compressor in series with a reciprocating compressor. As the pressure of the isolated section of pipeline is drawn down, the PS175 transitions from Reciprocating only mode to Rotary-Reciprocating mode. This dramatically increases the rate of recovery of gas at low pressures than what is possible from using only a reciprocating compressor.

Other Cross-Compression technologies are available to CHZero in addition to the PS175.

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