Cajaladda xadhigga leh (sidoo kale loo yaqaan cajaladda PTFE ama cajaladda plumber) waa filim polytetrafluoroethylene (PTFE) oo loo isticmaalo in lagu xidho dunta tuubooyinka.Cajalada waxaa lagu iibiyaa balaadhyo gaar ah iyo nabar ku yaal dabayl, taasoo sahlaysa in la dabaylo agagaarka dunta tuubooyinka.Waxa kale oo loo yaqaanaa cajaladda Teflon ee ganacsiga guud;halka Teflon ay dhab ahaantii la mid tahay PTFE, Chemours (kuwa haysta calaamadaha ganacsiga) waxay tixgeliyaan isticmaalkan mid khaldan, gaar ahaan maadaama aysan mar dambe soo saarin Teflon qaab cajalad ah. Xadhkaha xadhkaha goostay marka la furo
Caadi ahaan cajaladda waxaa lagu duuduubay dunta tuubada saddex jeer ka hor inta aan la isku rogin.Waxaa caadi ahaan loo isticmaalaa ganacsi ahaan codsiyada ay ka mid yihiin nidaamyada biyaha la cadaadiyo, hababka kuleyliyaha dhexe, iyo qalabka cadaadiska hawada.
Noocyada
Cajalada dunta leh waxaa badanaa lagu iibiyaa kabo yaryar.
Waxaa jira laba heer oo Maraykan ah oo lagu go'aaminayo tayada cajalad kasta oo PTFE ah.MIL-T-27730A (Qeexitaanka militariga duugoobay ee wali inta badan loo isticmaalo warshadaha gudaha Mareykanka) waxay u baahan tahay dhumuc yar oo ah 3.5 mils iyo ugu yaraan nadiifinta PTFE ee 99%. Heerka labaad, AA-58092, waa darajo ganacsi kaas oo ilaalinaya Shuruudaha dhumucda MIL-T-27730A oo ku dara cufnaanta ugu yar ee 1.2 g/cm3. Heerarka khuseeya way ku kala duwanaan karaan warshadaha;cajaladda qalabka gaaska (ee xeerarka gaaska ee UK) ayaa looga baahan yahay inay ka dhumucdo tan biyaha.Inkasta oo PTFE lafteedu ay ku habboon tahay isticmaalka oksijiinta cadaadiska sare leh, heerka cajaladda waa in sidoo kale la ogaadaa inay ka madax bannaan tahay dufan.
Cajaladda dunta ee loo isticmaalo codsiyada tuubooyinka ayaa inta badan caddaan ah, laakiin sidoo kale waxaa lagu heli karaa midabyo kala duwan.Inta badan waxaa loo istcimaalaa in lagu waafajiyo dhuumaha kood midabka leh (US, Canada, Australia iyo New Zealand: jaalaha gaaska dabiiciga ah, cagaarka ogsijiinta, iwm.).Koodhadhkan-midabka leh ee cajaladda dunta lagu xidho waxa soo bandhigay Bill Bentley oo ka tirsan Unasco Pty Ltd 1970-meeyadii.Gudaha Boqortooyada Midowday, cajaladda waxaa loo isticmaalaa gariirada midabada leh, tusaale ahaan gaaska jaalaha ah, cagaarka biyaha la cabbi karo.
Caddaan - loo isticmaalo dunta NPT ilaa 3/8 inch
Jaalle - loo isticmaalo dunta NPT 1/2 inch ilaa 2 inch, inta badan lagu calaamadiyay "cajalad gaasta"
Pink - loo isticmaalo dunta NPT 1/2 inch ilaa 2 inch, ammaan u ah propane iyo shidaalka kale ee hydrocarbon
Cagaaran - PTFE aan saliid lahayn oo loo isticmaalo khadadka ogsijiinta iyo qaar ka mid ah gaas caafimaad oo gaar ah
Gray - waxaa ku jira nikkel, anti-qabsiga, ka-hortagga xamaasada iyo ka-hortagga daxalka, oo loo isticmaalo tuubooyinka aan nadiifka ahayn
Copper – waxa uu ka kooban yahay granules naxaas ah waxaana loo cadeyay sida dunta saliidda, laakiin ma aha xidhe
Yurub dhexdeeda heerka BSI ee BS-7786:2006 wuxuu qeexayaa darajooyin kala duwan iyo heerarka tayada ee cajaladda dunta PTFE.
Waqtiga boostada: Apr-04-2017