Fitting TRVs to Microbore

corolla verso 2002 nike 44 baixa idade media matrox millennium g550 gps sistema di navigazione my immortal evanecense golf anno 1998 alle donne ci penso io kvr133x64sc3 256 isola grande morbo parkinson ufficio orbetello tokyo highway challenge merrell nero della guerra clausewitz fotos tetarelli car audio panasonic mercedes ml 320 videos de michael jackson scanner hp scanjet 4070 na zawsze oboz ta clarin com diario hoy deportes gulty blue nikon d50 18 55 philips 32pw9520 12 fotocamere digitali benq agriturismo san donato milanese girassol file recovery tv lcd 20 philips fruciano dlt iv 40gb profumi les copains obo susan gibney angelo caroli club abbiamo solo fatto lamore sfere milano www rds mr beat wintv pvr 150 talkabout t5422 tiamat master spenser testi di lucio battisti muta sub donna reflex digitali fuji sony monitor tft 19 xblack lcd patrick robinson chapman tracy homeplug powerline dansa carrelli porta tv dans vado a riprendermi il gatto gufi di ceramica master america pesca sodimm pc2700 ddr 512mb athlon 64 gigabyte schede madri giglio rapinato head speed eliche piccole follie texas holdem poker sigma 15 30 casco doro europa cept francobolli nude pic of hong nhung i n p s arciniegas ismael enrique oki multifunzione di caania gli amori toto cutugno logitech z5450 compter il governo francese da usb a svideo s5n turkish airlines contrabbandiere j bush lap dance ballerine samsung mp3 20gb rdr 910 nx 6125 pod 2 0 poerre jacques brel comme quand on etait beau vol 3 sony 32 crt ventola 478 cpu presidentes latinos usato per orafo russ meyer perfida natalie villaveces karco prada spr53f streghe stagione liliana lago oh boy clio veterinai viaggiare mondo free shaved pussy pic x ecutioners body rock canon stampanti ip5000 film porno rgatis donna matura in roma appunti psicologia panda 1100 hotel regente yoga nidra schiava del sud stampante epson stylus pro 4800 calendario mogli russe electron monza varese xmule linux mondo chat geforce 6600 sli hamrun laserjet 5 www bucarest it mamme con figli porno deepest blue donne mature gratis seat ibiza tdi presidente bush sardena reklama na ticho nokia cc213d coithienthai com midi madre natura percorsi autostradali europa amd k7 cooler vantec cable giochi per il nintendo ds pone telescopi orbiter encarte blowing in the wind video carole bouquet upm rh 7800 athlon 64 3700 (socket754) l acqua te la funtana sesso a pagamento gucci scarpe annuncio incontri abruzzo tu solamente tu dvx lettore dvd universale mp3 id3 256 vacanza bambino flash pen drive memory card piu su renato zero km0 volvo v50 auto km 0 incasso lavastoviglie sempron dissipatori amd e ventole patti pravo u brutta troia canon s70 fotocamere digitali laboratori cdc lavoro modica to ne ai luka cellulari promozione tettone lolo ferrari desechos industriales paul maccartney yumatu lil jon eastside boyz get low merengue luigi galia viti inox expressen faruk logitech web denon nero la casa di bernarda alba forno microonde delonghi sabbagh joao pessoa canon eos 350d efs 1855mm theme park world televisori 28 ich liebe deutsche land the champs edil job lightsaber black hole il buco nero rutshuru annuncio gay gratis oakley case www modelle de yeit mats wilander canzoni per yamaha tastiera collegamento internet gratis mp3 wireless imd (sas) notebook acer ferrari 4005 acquitrino elenco telecom 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.

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

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).

Clean out the tapping in the radiator. A wet