High Side Float valve

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High Side Float Valve Definition

High Side Float Valve Lies between the high-pressure side of the condenser and the evaporator of the refrigeration system. It also regulates the flow of liquid refrigerant to the evaporator. as per the load. It keeps up the consistent fluid level in the evaporator by a float chamber. And, it maintains by opening or shutting off the needle. The condenser supplies the liquid refrigerant at a similar rate as it evaporates into the evaporator. The rate of vaporisation depends on the load on the evaporator. Hence it works according to the load. Dry expansion evaporators may use these valves. 

High Side Float valve Diagram

High Side Float valve Diagram

Working of High Side Float Valve

High Side Float valve Refrigeration

Float valve Refrigeration System

  • The liquid refrigerant also flows from the condenser to the float chamber. The float ball also rises only after the level of the liquid refrigerant in the float chamber rises. After opening of the needle valve. This permits the liquid refrigerant to stream into the evaporator.
  • The liquid refrigerant does not flow from the condenser to the float chamber. The float ball also falls only after the level of the liquid refrigerant in the float chamber falls. Therefore closing the needle valve. 
Intermediate Pressure Valve

Intermediate Pressure Valve

  • We install the high side float valve on the base of the condensing unit or near to the evaporator. As it depends on the liquid level in the evaporator. At the point when it is introduced on the base of the condensing unit. the liquid line from the float to the evaporator will frost or sweat.
  • The liquid line is insulated to overcome the unfavorable conditions. We prevent the frosting by providing the pressure valve in the liquid line near the evaporator. This valve is basically, a weighted needle valve.
  • The saturation temperature of the liquid is above the dew point temperature of the surrounding air. Temperature at which the frost or sweat begins. Liquid line pressure is higher between the high side float and the intermediate pressure valve. Hence no frost or sweat.
  • An excess of liquid refrigerant causes flooding of the suction line. Too minimal refrigerant causes a low evaporator level results in a low capacity of the refrigerating system.

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