I have tooken up welding & bought a used set of victor torch gauges.But the oxygen regulator developed a leak at the flat hex nut type fitting located between the torch head hose & actual fitting nut to oxygen tank. This fitting has a predrilled factory 1/16" hole, where i think the air is flowing? It (leak)started while cutting a plate & will not cut off on its own. Only when you cut the main valve off on the oxygen tank.Is this some type of check valve? How do i repair & stop this problem?
Plus what is the difference between a single stage & two stage oxygen regulator ? HOW do you tell the difference?
Thank You.