Questions › Category: Mechanical Engineering › The operating pressure for refrigerating units using R-12 as a refrigerant is 0 Vote Up Vote Down VideRime Staff asked 5 years ago The operating pressure for refrigerating units using R-12 as a refrigerant isa) 2 barb) 8 barc) 15 bard) 30 barRefrigeration & Air-Conditioning Practice Set-3Share this Now with Friends: Share on WhatsApp (Opens in new window) WhatsApp Share on Telegram (Opens in new window) Telegram MoreRelated