The expansion valve holds back again the refrigerant and maintains the significant pressure in the condenser. In the enlargement valve, a small orifice permits a limited degree of refrigerant to continue to flow. As it flows by means of this restriction it reaches the lower tension side on the valve. https://www.penmann.co.uk/penmann-delivers-permanent-glycol-chiller-solution-for-ambrosia-creamery-in-lifton/