The enlargement valve holds back the refrigerant and maintains the substantial force of the condenser. Inside the enlargement valve, a small orifice permits a restricted number of refrigerant to continue to movement. Since it flows as a result of this restriction it reaches the low stress aspect with the valve. https://www.penmann.co.uk/penmann-delivers-permanent-glycol-chiller-solution-for-ambrosia-creamery-in-lifton/