It is a genuine OEM sourced part which is specially designed for use with Bostitch air compressors. The regulator attaches to the joint and the pressure gauge. During replacement, it may require a wrench set to help install this item correctly. It is made out of metal and plastic and will need to be replaced if it breaks. This is available as an individual replacement part.
This part is a genuine component that is supplied by the original manufacturer that is used for air compressors. This part will open and relieve air pressure to avoid extra pressure that builds up in the tank. Do not make any modifications to avoid injury. This safety valve is made of brass and is sold individually.