Question 24Refrigeration/AC - Assistant Engineer70% to pass
Which of the illustrated valves is used to gain access to a hermetic system and features a Schrader core valve which is unseated by the core depressor of hose fitting when attached? Illustration GS-RA-69
AI Explanation
The correct answer is D.
The illustration GS-RA-69 shows a hermetic service valve, which is used to gain access to a hermetic (sealed) system. This type of valve features a Schrader core valve that is unseated by the core depressor of a hose fitting when it is attached. This allows access to the sealed system for service or maintenance.
The other options, A, B, and C, do not match the description of a hermetic service valve with a Schrader core valve. They likely represent different types of valves or fittings used in other applications.
Related Questions
#22 If the superheat value of the thermostatic expansion valve is adjusted too high, what would be the result? #23 If the superheat setting of a thermostatic expansion valve is set too low, what would be the result, assuming that the system has a single evaporator? #25 How should small appliances with less than three pounds of refrigerant be charged with refrigerant? #26 Before charging a refrigeration unit, unless quick disconnect fittings are used, the refrigerant charging hoses should be prepared in what way? #27 Which of the illustrated devices would be the LEAST accurate for the purposes of weighing-in a refrigerant charge? Illustration GS-RA-45