boiler bushes

[ayesha2]

can anyone suggest the best way to make these 2 bushes steam tight

[houstonceng]

Depends if you want to make them "steam tight" at the junction of the bush and boiler, in which case - on a finished boiler - it's often asking for trouble to try resoldering with Silver Solder, so "Comsol" soft-solder is usually recommended.

OR

If you just want to plug them, then use PTFE tape on the male thread.

OR

If it's a fitting you want to screw in, then "soft copper washers" are usually used. PTFE tape or Hermatite, plus the Cu washer has been effective in the past with some "awkward" fittings.

Personally, I'd try facing the bushes to a better finish first. How will depend on your equipment, skill and the location of the bushes.

Sorry, I can't be more helpful.

[mutley]

Doesn't matter what the face of the bushes looks like. Use copper washers to get the alignment right and some loctite thread sealant to stop the drips.

Andy

[ace]

I have used something similar to this, actually I modified mine to fit a small safety valve bush that was soldered in at an angle by mistake.



A plumbers valve regrinder.

[russell]

Rather than thread sealant I would try Loctite 542 hydraulic sealant. Not sure of it's temperature rating though.

Russell.

[Shawki Shlemon]

There is loctite thread sealant 567, it is good stuff. It seems the bushes are on the back-plate , the faces are not with the best finish but that is not so hard to fix careful filing with a smooth new ( or as new ) flat file should do the job. If you mean the bushes leak from soldering joint , this is more serious but a skilled person with oxy acetylene and just using flux can reseal the bushes, In such instance I used no 32 tip after warming the boiler not heating it with a heating tip.

[ayesha2]

hi shawki
has you guessed they are on the back head, has per other threads

sorry i am a bit behind i,ve had an hernia operation 4 weeks ago,
then the wife followed with a knee replacement last friday 4th and ooooh finally the insurance got going in repairing the mother inlaws house
after 6 months messing about.
GOT ALL FINGERS AND TOES CROSSED now

thanks for all your solutions, the marks were made by a file but not of my doing,professionally done i believe ;D

[ayesha2]

Hi All

another problem is on the model engineer website Beginners/ Beginners Questions/ Back to the Workshop, though the problem is almost solved your comments on overcoming problem would be helpful to someone in the same prediciment has i.
Also shows how i photograph my subjects to get them in focus.

Yours tony

[ayesha2]

Hi all
Does anyone know where one can get a sievert hose with a 14m/m nut has used for old style sievert blowtorch handles other than Chronos

Yours Tony

[isc]

Get a piece of new hose and get the old fittings crimped on if thats what you'v got. If you use old equipment you 'v got to make do, or give up and buy new. isc