We produce 4 types of fittings “A”, “G”, “S” and “D”. We have also developed a safety valve. A Safety valve is a part of the fitting, which protects the Petkos PET keg from blowing. When pressure rises above 4 bars, a safety valve activates and releases excessive CO2 out of the keg, so the level of pressure falls back to normal and safety wall closes. A safety valve activates every time if needed. All fittings come with a safety-valve. With our fittings, you don’t need any special adaption for tapping!