Jammed regulator bolt on copper gas pipe

[adonisito]

Hi
I need to replace the bulkhead mounted regulator on our Burstner gaslow system. All has gone well but we have been unable to lossen the bottom bolt where the regulator joins the copper pipe. It seems stuck fast. I don’t want to force it round as it may damage the 8mm pipe.
Any ideas ? I’ve sprayed itwith freeing oil and will try again tomorrow.

Thanks in advance

 

[pappajohn]

Good fitting spanners on both brass insert and steel nut then try tightening first.... It may break it loose.
You won't damage the 8mm pipe no matter how much force you apply providing the pipe doesn't twist.... Hence, two spanners to prevent it. .

 

[adonisito]

Ahhhh ! Yes, both bolts. I wondered about that.

 

[eurajohn]

The bottom nut (longer hexagon item on bottom) should be turned right to left whilst the shorter top hexagon should be held firmly in place.

 

[ctc]

If can see a country of manufacture, buy spanners to suit. There is no such thing as a universal standard for spanners and a good fit when only gripping two sides is essential. At best if it doesn't open something will distort or sheer.

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[Landy Andy]

Tighten it a bit before untighten.

 

[robnchris]

Probably not a good idea to use oil based lubricants on LPG fittings.

When re-assembling PTFE tape can be used but keep it clear from the first couple of threads, loose tape can enter the system and will bloke small jets.

 

[Puddleduck]

The bottom nut (longer hexagon item on bottom) should be turned right to left whilst the shorter top hexagon should be held firmly in place.

Yes gas pipes are the opposite way to water pipes.


It's a safety thing

 

[andy63]

Yes gas pipes are the opposite way to water pipes.

Hi Helen...not sure what you are saying but the regulator connections in question will be conventionally threaded..ie right hand thread..
The fuel gas fittings on the cylinder outlets which are left hand threaded have a mark or nick in the fitting nut to indicate its a left hand thread ..
Like the photo..
Andy

 

[tonyidle]

Remove the top fittings from the regulator then detach it from the panel/its bracket. Hold the nut on the pipe stationary and unscrew the complete regulator from above.

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[Puddleduck]

Hi Helen...not sure what you are saying but the regulator connections in question will be conventionally threaded..ie right hand thread..
The fuel gas fittings on the cylinder outlets which are left hand threaded have a mark or nick in the fitting nut to indicate its a left hand thread ..
Like the photo..
Andy

My error. I thought all gas fittings were opposite to water pipes.

 

[adonisito]

Good fitting spanners on both brass and steel hexegans then try tightening first.... It may break it loose.
You won't damage the 8mm pipe no matter how much force you apply.

 

[adonisito]

Thanks all. Got it off this morning. Sprayed with wd, left 24 hours, Then used 2 spanners as per Pappajohn.
Heating didn’t kick in though ! Step 2.

 

[TheCaller]

The fuel gas fittings on the cylinder outlets which are left hand threaded have a mark or nick in the fitting nut to indicate its a left hand thread ..

Thanks Andy. While I know that propane bottle fittings are left-hand thread, I didn't know that the nick on the nut was an indicator of that.

 

[Catpirate]

If you use PTFE tape on gas fittings you must make sure it is suitable for gas, most are not. here is a guide

Everything You Need to Know About PTFE Tape | RS

This guide looks at what PTFE tape is and explains how to use it properly, as well as exploring the different applications across a range of industries.

uk.rs-online.com

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[andy63]

If you use PTFE tape on gas fittings you must make sure it is suitable for gas, most are not. here is a guide

Everything You Need to Know About PTFE Tape | RS

This guide looks at what PTFE tape is and explains how to use it properly, as well as exploring the different applications across a range of industries.

uk.rs-online.com

Ill have a read but I always have two types about.. and always understood the heavier thicker tape was the one to use on gas fittings ..but ive just read the blurb on the white one pictured and it says it's suitable for water and oxygen fittings..
The other stuff for gas as you can see is "thick as bulls lugs" as they say...
Andy

 

[Catpirate]

The thicker one is probably ok for gas

 

[mitzimad]

the thicker one is for gas but its only for male threads not compression fittings