Hello

I bought a 10 bar nitrogen regulator off ebay. If i over tighten it it gives me about 13 bar output. It cost about £15. It came with 2 guages, one for the high pressure side and one for the low pressure side. I took both these off and blanked them off with hydraulic caps. Be warned you will have to fit a high pressure 1000psi relief valve on the high side of the regulator (unless you screw the regulator directly into the bottle)