No need, there are inside the product.
By vevor
Yes, you really need an air compressor: connect the air from the air compressor to the inlet end of the pressure reducing valve, and connect the outlet end of the pressure reducing valve to the air inlet of the machine.
By vevor
Absolutely YES, you need an air compressor lol. This is a Plasma Cutter. It requires compressed air to blow the plasma out (cut)
By Mike
Thank you for your feedback
By vevor