# 26 edited to explain how this AXV works and its short comings.
They use AXV’s in a LOT of places, so their shortcomings cannot be that great...
there are two types, one with the spring on the diaphragm side, that was what was confusing me as that spring pressure on that type is increased to open the valve. This type balances the force between diaphragm(fixed preload on diaphragm + pressure applied) and the adjustable spring force to control that ball valve.
turning it in 3 1/2 turns should have lowered the pressure drastically as just about any pressure on the evap outlet side would close the ball.
So what are we missing? unscrewing the spring/opening the valve should raise low side pressure, unless:
1. You don't have any more refrigerant to give. But since you are seeing liquid at the accumulator(And have a very large pressure differential) That is probably not the case...
2. You are exceeding that valves Internal passage/orifice’s ability to flow... When I looked up that p/n yesterday some specced it for 1 1/2 ton and others showed it for 2 1/2 ton. What is your system rated at?