The growth valve retains again the refrigerant and maintains the high strain on the condenser. In the enlargement valve, a small orifice enables a restricted volume of refrigerant to carry on to flow. As it flows by means of this restriction it reaches the lower tension facet of the valve. https://www.penmann.co.uk/penmann-delivers-permanent-glycol-chiller-solution-for-ambrosia-creamery-in-lifton/