To read gauges,you must know which is low side/high side,if you know that, then depending on which freon you are using,you read the pressures matching the temp,for example,looking at the low side gauge(blue gauge) look at R-22 freon,you will see that 40 degrees,will equal to 70 psi
No. the pressure are different, r22 runs at a fairly low pressure and you shouldn't be worried about blowing your gauges, but you won't be able to determine your super-heat or sub-cooling. for a about $100cdn you can buy the right gauges.
It is necessary to read the density and the quality of the gauge. You should see the lower side.
Wal-Mart do not have r22 freon, this is a false ad.
25 gauge is the size of the needle not the syringe. they are measured in cc's
The gas gauge on the truck read 70 miles per hour.
It would be better to write: My gas gauge reads empty. Note that 'gauge' is singular, so it needs the singular verb, reads. If you had several cars all with gas gauges that read empty, then the verb would be read.
Read the instructions that came with it. If you don't have them ask the manufacturer for a copy.
r22a
69.9
No
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