The growth valve holds back again the refrigerant and maintains the superior strain of your condenser. Within the expansion valve, a little orifice will allow a restricted volume of refrigerant to continue to move. Since it flows via this restriction it reaches the very low stress aspect of your valve. https://www.penmann.co.uk/penmann-delivers-permanent-glycol-chiller-solution-for-ambrosia-creamery-in-lifton/