Un-Threading Brass in Brass Pipe Threads

[CoyPatton]

Not a good idea due to the internals of the regulator especially the diaphragm.

Ron

Totally agree, but when it is useless in current state, do you replace some parts or trash everything?

 

[WranglerX]

Totally agree, but when it is useless in current state, do you replace some parts or trash everything?

Due to the nature of the beast and implication if it goes wrong, I would send it in to have qualified technicians do the work...

Dale

 

[Tractor Seabee]

Minimum price here for repairs to regulators is $70 plus 10% tax. Talked to their repair guy and he stated some of the treads are very difficult unless you have a special vice for holding regulators. Also they do not recommend repairing other than the high end ones. The little guy is priced out of the high end market with all the knock offs around. I can buy used name brand regulators cheaper than the repair. My time is my own so I may just drill it out. Tried all the thermal shock ideas you guys have to no avail. I am well aware of the oil situation, use only non oil sealants. Thans all for your ideas.

Ron

 

[bcp]

Vibration sometimes helps. I would try an air ratchet with a crowfoot wrench. Don't let it rotate, but apply enough force to stall it in one position.

Bruce

 

[ultrarunner]

Im pulling for you...

When I had trouble changing out regulator oxygen fitting to tank a retired gas plant guy said to screw it in tight to the large cylinder first so as to use the cylinder as my vise.... it work and avoided visegrip marks on the brass

 

[FarmaBro]

Could it be... wait for it... left hand thread? Are the hexes notched on the edges?

 

[WranglerX]

Could it be... wait for it... left hand thread? Are the hexes notched on the edges?

Probably not almost all US made gauge bodies use 1/4 inch NPT.... Even the acetylene body is 1/4 inch pipe thread, it just uses a nipple on outlet that is 1/4 inch NPT on one end and 9/16 X 18 UNF LEFT HAND thread for hose connect...

Dale