Review on 🚂 Vixen Horns 1.5 Gallon (6 Liter) Train/Air Horn Tank System Kit - 6 Ports, 150 PSI with Gauge, Switch, Safety Valve, and More! by Eddy Borghesi

Overall the tank isn't bad for the price although there are some issues, the threads in all holes are a bit rough and the fittings that came with were only good ones Quality, no standardization of key size required to fit them. I don't think two fittings used the same key size. I also had to replace the included 120-150 psi pressure switch with one set at a slightly lower pressure (90 on - 110 off psi) to work with my Firestone HD airbag compressor. I also replaced the crappy dump valve with a quarter turn valve.