Fitting TRVs to Microbore

From DIYWiki
Revision as of 14:02, 31 August 2007 by 62.215.3.45 (talk)
Jump to navigation Jump to search

cucina gas pavel eu beu lexmark e332tn wireless distanze immagini favola biancaneve e i sette nan hyundai lcd 17 nutro choice puppy lamb rice testi e canzoni di gigi d ales il sipario di ferro all negozio sanitari magia celentano adriano dolce gabbana accessori uomo lingerie francesina baja tevere samsung slim fit adorazioni per il tempo di avvento www rua gov bo ucds 301 impalcato nuovi nokia umts cucina con foto codici per nec e616 machiavelli gioco carta edwige fenech rare photos testi delle canzoni top del momento la tigre bianca p h d www worldsex com organizzazione congresso registratore digitale interfaccia usb hard disc esterno 400gb tv acer ax120 zumbaos com bondage sex www goole co jeff bickley the doors light my fire yugy o gian piero diaz the chieftains sprint blast 1940 oscar homolka vasche cromoterapia sonic rush in rete e in un nuovo trailer monitor lcd compaq presario discoteca luna rossa stampanti laser colori a3 bluetooth ck1w oakley mag storia di gaeta gru e carriponte norton internet security 2005 ghost 9 new york press operazione dollari ram adata acer aspire 5024wlmi turion 64 1 8 ghz rosetta dvd tedi spalato motobarca creative t5900 accessorio tv sceneggiature baby girls olmo friends tv thomson 25 z ball giochi in cui vesti le persone testo father and son copri lcd www gus guess donna play n learn v100 archos cable digitale terrestre portatile axis print server edius ca monitor professionali lcd entrambi bsx box usb firewire prestito fano belinea monitor we both reached for the gun dios le pido tesi giurisprudenza falsetas de el barrio prehistoria descent maximum colonna sonora gladiatore gratis alberta cose fare versione di greco per esame maturita 200 micro radio test d intelligenza mary leakey cartotecnica cremona alleghe audio hi fi incontri gay spiagge comune di prato pile cani hp 3030 laserjet ist ds jeans roy rogers uomo adolescenza torbida renault 4x4 facolta di psicologia padova le materie programma di educazione sessuale ladri di caraturo goldrake sony cfd e90l falli vibranti logitech cordless headphones for mp3 jeans di marca giuntini gioco nuovo zairi dsc 17 sony video di avril video gratisporno grupo editorial lexus appunto economia politica sexy nudo epilatori braun trasporti milano porsche carrera cabrio 964 inviti comunione custodia subacquea per olympus martinelli carrozzine badcopy metal gear 3 ps2 videogiochi mozart il flauto magico modem e interfacce inquadratura nuovo singolo dei blue profiteroles gastronomia simbario edenviaggi it astra cosmo flatout torna nel 2006 www simonerossi it rothenburg and landwehr scaleo media center misunderstood sc ligier nova muitos ais ti cerchero testo leggi olandesi sull omosessualita rumba gitana supporto da parete per tv plasma dla ciebie martin ricca julia boutros halloween vol 1 benini antonio wireless home theatre panasonic gli indomiti della vita inter amala foto di sesso anale gratis auto nissan 350z per me importante tiromancino scalea mp3 cycles bici 20 ex s500 casio inculata dal cane le verrier urbainjeanjoseph lisbon web cam it che sara testo jespica no mas land rivoluzione a cuba i m not a girl not yet a woman agriturismo chiavari sono tua comune di potenza risultati elezioni etats d asie campionato pc balalaika supalova cd dolby surround pioneer www cine fr quadri riproduzioni ricostruzione unghie in gel scheda madre asus a8n sli deluxe maxtor 2 il calice e la spada hotel 5 stella miami una demo per battle mages dedica tesi discoteca roma barzellette erotiche arbitri calcio mit university boston klv s32a10 suprema confessione testi m bouble jbeil goggle com esame avvocato catanzaro 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. 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.

TRV microbore 01.jpg

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.

TRV microbore 02.jpg

Line up the TRV body with the existing valve body and mark the microbore for cutting to fit into the reducer.

TRV microbore 03.jpg

Cut the microbore where marked: in this instance a junior hacksaw is used as there isn't space to use a wheel-type cutter

TRV microbore 04.jpg
TRV microbore 05.jpg
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).
TRV microbore 06.jpg
TRV microbore 07.jpg
TRV microbore 08.jpg
Clean out the tapping in the radiator. A wet