Hi

I make a de-humidifier using a simple condensing unit and evaporator coil, TEV, R134A etc approx 800w cooling. The load on the machine can vary a lot and at present I fit a hot gas bypass valve (ALCO ACP3) from the discharge gas side to suction side after the TEV but before the evaporator to maintain the suction pressure above zero at low loads.
my question is could I do this with a solenoid valve I.e. Danfoss, operated via a pressure switch? my concern is as soon as the valve opens would it let too much gas in too quickly with the pressure going up and down to quickly, I assume I could fit capillary tubing but it's knowing what size to use and would this cause any other problems?
Any one else done this?
My reasons are that the Alco valves are very difficult to get hold of, having to wait up to 8 weeks, so looking at an alternative.

Regards
CB