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[TheBoy]

Does anyone know what the sealing method should be on these?

Does it rely on a taper at the bottom (whould have to be precise manufacture, as valve has to point in a precise direction), or should there be some kind of sealing compound on the thread?

[JamesV6CDX]

Do you mean the outlet on the 4 hole tank?

I believe it's sealed by the compound, rather than position.

I had to rotate mine clockwise, to clear a bracket inside the airtight box. It was 'Effin tight and hard to move!!

[JamesV6CDX]

Also, if you have a 4 hole - the valves should be pre - fitted, so providing they point in suitable directions, you can leave them as-is.

[TheBoy]

Also, if you have a 4 hole - the valves should be pre - fitted, so providing they point in suitable directions, you can leave them as-is.

It would appear not always

[JamesV6CDX]

Also, if you have a 4 hole - the valves should be pre - fitted, so providing they point in suitable directions, you can leave them as-is.

It would appear not always

I'd give your tank supplier a slap 

[tunnie]

mine was not pre-fitted either, it was just based on the thread.

[JamesV6CDX]

mine was not pre-fitted either, it was just based on the thread.


 

Yours is a multivalve, so generally these don't come pre-fitted

Never known 4 hole tanks coming without valves before, though!

[TheBoy]

mine was not pre-fitted either, it was just based on the thread.


 

Yours is multivalve, very different, uses a rubber seal iirc

[tunnie]

mine was not pre-fitted either, it was just based on the thread.


 

Yours is multivalve, very different, uses a rubber seal iirc

Well thats your fault for buying a stupid tank with more holes 

[TheBoy]

mine was not pre-fitted either, it was just based on the thread.


 

Yours is multivalve, very different, uses a rubber seal iirc

Well thats your fault for buying a stupid tank with more holes 

Power is for gentlemen of a certain age. 4 pots are for useless students. Learn and get over it

[Kevin Wood]

I would imagine the fitting has a tapered thread rather than seat, allowing it to seal with a little adjustability in the angle.

The question is: what "compound" is used to seal them?

Gut feeling is that PTFE gas tape might do the job, but mine looks to have been sealed with a paste of some sort. Given the PITA involved in resealing, it needs to be done the "correct" way.

Kevin

[Marks DTM Calib]

I would have thought liquid PTFE would be the way to go

[TheBoy]

I would have thought liquid PTFE would be the way to go

Got a name and where I can get it? ie, something B&Q or Wickes, given the lack of anything useful around here.

Does it have to be gas specific - ie, not normal plumbers stuff?

[TheBoy]

This:

http://www.screwfix.com/p/ptfe-gas-tape-pack-of-10/53966

combined with this

http://www.screwfix.com/p/no-nonsense-ptfe-liquid/40302

??


So remove valve (could be easier said that done!), clean up thread of threadlock, wrap in PTFE tape, add some PTFE liquid "to make sure", screw back in?

[TheBoy]

or

http://www.screwfix.com/p/liquid-ptfe-50g/30469

given that the reviews on the No-Nonsesne liquid I posted earlier imply its shite! And this one mentions LPG