Question

On heat pumps, each bypass line around a metering device usually contains a:

A) Pressure relief valve
B) Check valve
C) Solenoid valve
D) Thermostatic expansion valve

Answer 1

On heat pumps, a bypass line around a metering device typically contains a check valve, which ensures refrigerant flows in one direction and prevents backflow.

Step-by-step explanation:

On heat pumps, a bypass line around a metering device such as an expansion valve serves to regulate refrigerant flow during various operational modes. Typically, this bypass line contains a check valve. A check valve allows refrigerant to flow in one direction while preventing backflow, ensuring proper functioning of the heat pump in different modes, like switching between heating and cooling. This component is crucial for maintaining system efficiency and preventing potential damage by avoiding reverse flow and the associated disruptions it could cause.