Another Gaslow question.....

[acropolis22]

My dealer fitted a single Gaslow bottle. The hose from the filling point has been connected using some sort of white paste. Is this necessary? I understood this connection sealed by a rubber washer that comes with the hose. Photo attached.

 

[jockaneezer]

I've made hundreds of pipe joints over the years, from using red lead and hemp, ptfe and on to the modern Loctites like 542 and 567.
I nearly always put a smear (and I mean just a feint smear, not like the pictured joint where it was put on with a cake icing bag) on a joint that isn't going to be disturbed.
Conex compression fittings on household plumbing always get a thin wipe of Boss White as an insurance.

 

[BillyKontiki]

As I said, like lots of joints in gas pipelines, they are designed to be taken apart by people who know what they are doing. I have not used the word "qualified" by the way because that is not required by law for motorhome gas fittings (unless used for commercial or hire purposes).

I didn't mention paste at all. Lots of people, including me, do use a smear of non-setting paste as a belt and braces option. My view is that brass is relatively soft ( that is why it makes a good seal) and just because it was made with a machined surface, it does not mean that it has still got one by the time I get to fit it. That does not stop the joints being taken apart and remade.

The paste I use is a small tube of red "Calortight" which I inherited from my Dad when he died over 30 years ago. That is still squeezable now and always seems to get everywhere whenever I use it, which is not very often. Therefore I consider it is still non-setting.

As to whether or not I know what I am doing, my opinion usually differs from that of my wife's.

As for PTFE tape, the usual white stuff is used for water only. However you can get specific PTFE tape that is suitable for Gas nowadays, which is coloured yellow.

On specific PTFE for gas the spool that holds the tape is yellow, the tape is still white.
But I prefer liquid PTFE which is suitable for N gas, Lpg, water and steam.

 

[Dave Scadding]

Haven’t read all of this however I would comment that the elbow joint looks sh*t, if they felt the need for additional seal then some PTFE (gas type) on the thread applied correctly would suffice. This looks like an afterthought, if it was on my van I would take it back and insist it was removed and refitted correctly.