Multiple Choice Question (MCQ)
Question: Which size service port is used in automobile air conditioners for HFC-134a refrigerant?
A.
1/4" - 13 ACME
B.
1/2" - 16 ACME
C.
3/8" - 15 ACME
D.
5/16" - 14 ACME
Correct Answer: 1/2" - 16 ACME