Review on Supco BPV31 Bullet Piercing Valve by Tony Trotter

Pretty simple installation process that went well. Just read and follow the instructions and it's easy to do. Worked the first time on a block but had to refill 3 more times before it worked. It's not the valves, apparently the sealant in the R134 took 3 tries to get the job done? I'm glad the first worked flawlessly as it motivated me to keep trying the second device. Next time I'll probably buy a refrigerant with more sealant. They will expire over time. Both units operated throughout the summer in one of the wettest years on record. IF I need to recharge them in the future, installing them will make it super easy!