The enlargement valve retains back again the refrigerant and maintains the significant force from the condenser. Within the expansion valve, a little orifice lets a restricted amount of refrigerant to continue to move. Since it flows by way of this restriction it reaches the low force aspect from the valve. https://www.penmann.co.uk/penmann-delivers-permanent-glycol-chiller-solution-for-ambrosia-creamery-in-lifton/