EPA Section 608 Universal Certification ExamType II (High-Pressure Appliances)Easy
Which of the following refrigerants is classified as a 'high-pressure' refrigerant under EPA Section 608 regulations?
- AR-113
- BR-123
- CR-134a
- DR-11
Show answer & explanationAnswer & explanation
Correct answer: C. R-134a
R-134a is a high-pressure refrigerant. R-11, R-123, and R-113 are all low-pressure refrigerants.
Why the other options are wrong
- A. R-113 is a low-pressure refrigerant, historically used as a solvent and in some chillers.
- B. R-123 is a low-pressure refrigerant.
- D. R-11 is a low-pressure refrigerant, often used in large chillers.
High-Pressure Refrigerant Definition
Under EPA Section 608, high-pressure refrigerants have a liquid phase saturation pressure between 170 psig and 300 psig at 104°F.
- Examples include R-134a, R-410A, R-22.
- Requires specific recovery procedures and equipment.
- Different from low-pressure and very high-pressure refrigerants.
Memory trick: Pressure groups by boiling point, know your class, avoid disappointment.