EPA 608 Type II · Safety · Medium
What service pressure rating must a recovery cylinder have to hold R-410A?
Answer: D. 400 psig.
- A260 psig.
- B300 psig.
- C350 psig.
- D400 psig.✓ Correct
Why D is right
R-410A runs at much higher pressures than R-22, so it may be recovered only into cylinders with a 400 psig service rating, such as DOT 4BA400 or 4BW400. Check the rating stamped on the cylinder before connecting it.
More Type II questions
- Recovering R-454B, an A2L refrigerant, requires what kind of recovery machine?
- Why must you never pressurize a refrigeration system with oxygen or compressed air?
- Can you pipe two pressure relief valves in series?
- Why must you never start a hermetic compressor while it is in a deep vacuum?
- R-22 has a saturation pressure of about 220 psia at 104°F. Which EPA category does an R-22 appliance fall in?
Go deeper with the study guide A2L Refrigerants and the R-410A Transition: A Tech’s Guide, try the free 10-question test or browse all EPA 608 practice questions.
A practice question written for study, checked against 40 CFR Part 82, Subpart F. It is not an official EPA exam question, and this site is not affiliated with the U.S. EPA.