As we discussed in an earlier podcast, a TXV maintains a specified and constant superheat at the evaporator coil outlet. It does this through a balance of forces between the bulb pressure (opening force), equalizer pressure (closing force), and spring pressure (closing force). We can actually adjust the spring pressure on some valves. But why […]

Some of the scariest practices that occur in the field surround brazing practices and tank and regulator handling. A few obvious tips are: Store tanks completely secure and upright with nothing nearby that can easily open or damage the tank valve. NEVER store tanks in a torch kit with it off only at the torch […]

I've heard the phrase, “It's too cold to set the charge!” for as long as I've been in the trade. “We need to come back and set the charge,” or we need to come back to do XYZ [some other thing]. Granted, there are cases where you do actually need to come back, but in […]