Quote:
Originally Posted by Okotok
I do both because it's easy. Buy one of the valve stems from an RV place or crappy tire. Screw it into your city water connection and set your compressor between 40 and 50 psi. Charge up the system and open one tap at a time, blow down for a few shots each and repeat. Make sure your water heater is by passed. I then fill with RV glycol. Never any problems. Double protection doesn't hurt if you already have a compressor.
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What happens if you blow your lines out with more than 40 to 50 psi?