Hello cool friends,
Has anyone heard or wish to comment on a liquid injection system that uses a manually adjustable metering valve followed by a crankcase pressure regulator set at a very low pressure just higher than low pressure cut-out of compressor.

There would be a suction accumulator downstream of the junction and another CPR upstream of the junction set at much higher pressure. So if suction pressure climbs the main suction line CPR modulates down and if it drops way low the liquid injection CPR modulates open. Since pressure is so low a system has suction accumulator and a fine liquid metering, then liquid slugging would not happen.
Benifit? - No thermal valve in liquid line, no hot gas bypass valve/line, no short cycle of compressor, cool runnin compressor.???? These would be individual working cold labs at 4C-10C with hotgas modulation/defrost into distributor. What a great community and service. I'm proud to be involved.
Thank You All, Joe Liptow from Clev Ohio USA.