Difference between revisions of "Fitting TRVs to Microbore"
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| − | This article is about fitting [[Thermostatic Radiator Valves]] to [[microbore]] pipe used in [[Central Heating]] systems. It is equally applicable to fitting manual valves and lockshield valves when reworking or extending an existing microbore system. | + | [http://www.kayseriaskf.com/picture_library/qgbfce.html Centro sclerosi multipla lunga degenza] [http://higginscohn.com/picture_library/frvfod.html Fat pussy hairy] [http://www.ebrulimobilya.com/picture_library/kmvftf.html cartoni porno xxx] [http://www.tffhgdkayseri.org.tr/picture_library/nvmbbi.html Tangas] [http://www.mimdizayn.com/merkez/images/utgfoe.html Sconto biglietto aereo] [http://gardenstylebydesign.com/Templates/nmimlm.html Gohan e videl sesso] [http://mojelizatko.wz.cz/source/language_text/cxiemc.html Foto ragazzi gay nudi] [http://probeverunka.unas.cz/cache/bmfump.html Scuola di danza torino] [http://radioherz.com/Library/_notes/pskkjo.html Mozzilla] [http://www.mimdizayn.com/merkez/images/tcihtb.html Fanclub michael schumacher] [http://www.hasekisigorta.com/images/dxdlex.html Ww esprinet com] 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masterizzatore light] [http://just-whelm.freehostia.com/tutte-le34.htm tutte le mamme] [http://tacogrrla.freehostia.com/rossana-casale.htm rossana casale] [http://drakuldemona.freehostia.com/polonez.htm polonez] [http://lazy-murrra.freehostia.com/kia-auto1.htm kia auto] [http://super-ioz.freehostia.com/testi-blink/ testi blink 182] [http://renkokitom.freehostia.com/russian-play/ russian play mate] [http://beloyara.freehostia.com/topic/brussa/ brussa] [http://tacogrrla.freehostia.com/prezzi-carburante.htm prezzi carburante] [http://beloyara.freehostia.com/topic/selfmade-man/ self-made man] [http://lazy-murrra.freehostia.com/testo-vola.htm testo vola lazio vola] This article is about fitting [[Thermostatic Radiator Valves]] to [[microbore]] pipe used in [[Central Heating]] systems. It is equally applicable to fitting manual valves and lockshield valves when reworking or extending an existing microbore system. |
The approach described here uses a standard 15mm valve and a soldered 15mm*8mm or 15mm*10mm fitting reducer (e.g. [http://www.bes.ltd.uk BES] 6786 or 6787) to connect to the microbore. This avoids the difficulties that are likely to occur trying to fit a new 8mm or 10mm valve to existing pipework: because microbore copper is very soft the pipe is often found to be distorted when the old valve's olive is removed making it very difficult to get a good seal to the new valve. Even if the pipe is not distorted it is very easy to over-tighten microbore compression joints resulting in leaks. Because this method uses soldered joints the heating system must be drained down to below the level of the valves being replaced. | The approach described here uses a standard 15mm valve and a soldered 15mm*8mm or 15mm*10mm fitting reducer (e.g. [http://www.bes.ltd.uk BES] 6786 or 6787) to connect to the microbore. This avoids the difficulties that are likely to occur trying to fit a new 8mm or 10mm valve to existing pipework: because microbore copper is very soft the pipe is often found to be distorted when the old valve's olive is removed making it very difficult to get a good seal to the new valve. Even if the pipe is not distorted it is very easy to over-tighten microbore compression joints resulting in leaks. Because this method uses soldered joints the heating system must be drained down to below the level of the valves being replaced. | ||
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| [[image:TRV_microbore_08.jpg|center]] | | [[image:TRV_microbore_08.jpg|center]] | ||
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Revision as of 16:27, 4 October 2007
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The approach described here uses a standard 15mm valve and a soldered 15mm*8mm or 15mm*10mm fitting reducer (e.g. BES 6786 or 6787) to connect to the microbore. This avoids the difficulties that are likely to occur trying to fit a new 8mm or 10mm valve to existing pipework: because microbore copper is very soft the pipe is often found to be distorted when the old valve's olive is removed making it very difficult to get a good seal to the new valve. Even if the pipe is not distorted it is very easy to over-tighten microbore compression joints resulting in leaks. Because this method uses soldered joints the heating system must be drained down to below the level of the valves being replaced.
TIP: If planning to replace several valves on an existing system check the diameter of pipe on all valves to be changed: often systems have a mixture of 8mm and 10mm pipework.
 Insert a fitting reducer into the valve so that the olive sits in the middle of the reducer (see pictures of the soldered-up connector, below) and tighten so that the olive grips the reducer. |
 Line up the TRV body with the existing valve body and mark the microbore for cutting to fit into the reducer. |
 Cut the microbore where marked: in this instance a junior hacksaw is used as there isn't space to use a wheel-type cutter |
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| Unscrew the old valve body and tail from the radiator (this saves undoing the valve from the tail and then using an L-shaped hex key to unscrew the tail). | |
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| Clean out the tapping in the radiator. A wet | ||