Pressures of R290 refrigerant at -44ยฐF to 120ยฐF temperatures are represented by the R290 PT chart. This pressure temperature chart will tell you what R290 temperature to expect at a certain temperature, and what is the temperature of R290 at a certain pressure. Below you will find an online R290 pressure-temperature chart as well as … Read more
R448a PT chart is quite useful in HVAC. It tells you what is the pressure of R488a liquid and vapor refrigerant from -49ยฐF to 150ยฐF. Inversely, you can also tell the temperature of R488a refrigerant if you know the pressures (from 0.7 psig to 462.8 psig). Further on, you will find an online R448a pressure … Read more
When dealing with R407c refrigerants, you will have to consult the R407c PT chart. This is a chart that tells you what pressure R407C should have at -49ยฐF to 150ยฐF temperatures. Using an R407c pressure temperature chart you can also check what temperature a saturated R407c liquid and vapor should have at -10.4 psig to … Read more
R404A is one of the most commonly used refrigerants. This class of refrigerants (HFCs like R404A or R134A) were introduced in the 90s and 2000s to replace the harmful CFCs. Of course, as with every refrigerant, you need to use the R404A PT chart to get an idea of what kind of pressure you are … Read more
R134A PT chart is a standard table. Basically, this 134A PT chart tells you what is the pressure of R134A refrigerant at certain temperatures. The charts start at the low end (-49ยฐF) and tell you the pressures all the way to the high end (150ยฐF). Example: What is the pressure of 134A freon at 85ยฐF? … Read more
R22 PT chart describes the relationship between temperature and pressure. Namely, it tells you what is the pressure of R22 refrigerant gas at different temperatures. Example: What are R22 pressures on an 85-degree day? You simply consult the R22 RT chart below and see that at 85ยฐF, the pressure of R22 is 155.7 psig. psig … Read more
R410A is one of the most commonly used refrigerants. It’s patented by Honeywell, and known under several other names such as “AZ-20”, “Genetron R410A”, “Puron”, and so on. It’s the preferred freon for residential air conditioners, replacing the older R22 according to the Montreal Protocol and subsequently phasing out of R22. To properly use it, … Read more