Review on 💥 Bullet Piercing Valve Kit: Easily Convert R12 to R134A with Dust Cap | Compatible with Multiple Models | 7/16 Inch Low Side Port | BPV-31 by Don Olsen

This kit was used to make R-134 automotive coolant and R-134 automotive coolant topped up in a window bracket and it worked fine.The knockout valve is fitted in the low pressure line with no shims and doesn't appear to be leaking a week after fitting.Most likely bought a few more years before we need to replace the upstairs cooling unit, where the narrow ducts prevent the system from really cooling.DIY and cheap.I figured the worst thing I could do was destroy the device I was planning to replace anyway.For $10,about 15 minutes YouTube search and 30 minutes of work, hundreds of replacement costs were saved this year.