Astoria teardown and rebuild
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- Posts: 1021
- Joined: 11 years ago
So I picked up this Astoria single group mainly because I was curious to how the rotary pump worked.
Everything works actually, just needs some parts and seals. The group jet was blocked solid, so i fixed that and tested it. I did a quick descale and now have it apart and could use some help on how to clean the boiler, it looks like concrete more than scale.
Everything works actually, just needs some parts and seals. The group jet was blocked solid, so i fixed that and tested it. I did a quick descale and now have it apart and could use some help on how to clean the boiler, it looks like concrete more than scale.
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- Posts: 1021
- Joined: 11 years ago
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- Posts: 1021
- Joined: 11 years ago
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- Posts: 1021
- Joined: 11 years ago
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- Posts: 46
- Joined: 12 years ago
Bottom one is a check valve (one-way valve) and the top one is an expansion valve (over-pressure valve).
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- Posts: 1021
- Joined: 11 years ago
Thanks! I opened up the bottom one, not the top yet. Bottom has an orig and a spring with a plastic cone. Should these just be clean up, or replaced? As a whole or just seals?
- MNate
- Posts: 959
- Joined: 8 years ago
I would think just cleaned up is great, new seals where applicable. Also note that there may be some fine mesh in psome of the lines that can probably just be cleaned as well- just remember where they go!
- civ
- Posts: 1148
- Joined: 17 years ago
Hello:
Nice find ... =-)
Congratulations.
Do the same with the vacuum valve.
Where possible, replace any 'O' rings/seals with silicone versions which will last much longer.
Paul Pratt recommends using them instead of other materials such as Viton or Nitrile.
See this page from his website.
Cheers,
CIV
Nice find ... =-)
Congratulations.
Take them apart, give them a thorough clean up with the usual stuff ie: vinegar/dilute acids/etc. and replace the seals.forbeskm wrote: ... just be clean up, or replaced?
Do the same with the vacuum valve.
Where possible, replace any 'O' rings/seals with silicone versions which will last much longer.
Paul Pratt recommends using them instead of other materials such as Viton or Nitrile.
See this page from his website.
Cheers,
CIV
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- Posts: 1021
- Joined: 11 years ago
Thanks CIV, cleaned the, up, need to get a new copper gasket, descaled them in some vinegar/water , came out nice.
Thanks for the link, quite helpful his site.
Thanks for the link, quite helpful his site.
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- Posts: 1021
- Joined: 11 years ago