Technician A says in an H-block valve the temperature sensing sleeve (bulb)is internally located in the outlet port of the valve.Technician B says the operation and function of the H-valve,or block valve,are essentially the same as the thermostatic expansion valve (TXV).Who is correct? A) Technician A only B) Technician B only C) Both A and B D) Neither A nor B

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Quizplus · Accepted Answer

Both technicians are correct. Technician A is correct in stating that in an H-block valve, the temperature sensing sleeve (bulb) is internally located in the outlet port of the valve. This design is specific to H-block valves and is a key feature. Technician B is correct in stating that the operation and function of the H-valve, or block valve, are essentially the same as the thermostatic expansion valve (TXV). Both types of valves serve to regulate the flow of refrigerant to the evaporator based on the cooling demand, although their designs might differ.

Technician A Says in an H-Block Valve the Temperature Sensing