Hauv kev nkag siab dav dav, fittings yog txhua yam ntawm cov nodes siv los txuas ntau qhov chaw ntawm cov kav dej. Cov no suav nrog ntau yam hauv cov duab thiab kev teeb tsa: fab (khoov), tees, couplings, manifolds, crosses, adapters, plugs. Cov yeeb nkab fittings raug cais raws li kev sib txuas. Yog li, lawv tuaj yeem raug threaded, capillary (rau capillary soldering), compression, nws tus kheej-locking, nplaum.
Threaded fittings yog cov khoom siv ntau tshaj plaws. Lawv tsuas yog ntsia hlau rau hauv cov yeeb nkab. Qhov kev sib txuas yeeb nkab no yog qhov qub tshaj plaws. Feem ntau, threaded fittings yog tsim los ntawm cov hlau cam khwb cia thiab siv los txuas cov kav hlau. Lawv qhov tsis zoo yog lub causticity thiab brittleness yam ntxwv ntawm cam khwb cia hlau.
Cov pob qij txha ua los ntawm cov hlau, yas, tooj dag, tooj liab, polypropylene yog siv los txuas cov kav hlau-yas. Hlau-yas fittings yog ib qho yooj yim mus use vim lawv muaj ib tug tshwj xeeb ferrule. Nws raug kaw nrog ib tug ciaj ntswj tom qab muab tso rau hauv cov yeeb nkab.
Fittings yog siv los txuas cov kav dej,tsim los rau capillary soldering. Lub hauv paus ntsiab lus ntawm lawv daim ntawv thov yog qhov yooj yim heev: lawv muab cov kev sib dhos uas yuav tsum tau ua rau ntawm cov yeeb nkab thiab pib ua kom sov nrog lub tshuab cua sov tshwj xeeb kom txog rau thaum lub solder los ntawm tooj liab lossis tin hlau nyob rau hauv cov xov sab hauv melts. Tom qab ntawd, nws puv tag nrho qhov chaw dawb ntawm qhov haum thiab cov yeeb nkab.
Tsis ntev los no tau tshaj tawm cov khoom siv ntawm tus kheej-locking pob qij txha siv rau cov kav dej ntau. Lawv nruab sai heev. Cov fittings zoo li no tsuas yog muab tso rau ntawm cov yeeb nkab ua ntej thiab calibrated kom txog thaum nws nres. Lawv tuaj yeem siv ntau zaus. Kuj tseem muaj ntau yam ntawm cov nodes li nplaum fittings. Lawv yog tsim los ntawm polyvinyl chloride. Lawv kev sib txuas nrog cov kav dej yog ua los ntawm cov kua nplaum tshwj xeeb.
Cov xovxwm tshwj xeeb yog siv los txuas cov kav hlau-polymer. Feem ntau lawv yog ua los ntawm tooj dag. Lawv lub tes tsho crimp yog ua los ntawm steel. Txhawm rau nruab xws li qhov haum, koj xav tau xovxwm tshwj xeeb.
Fittings tau txais lawv lub npe txawv txawv los ntawm lo lus "FITTING", uas yog lus Askiv txhais tau tias "fitting", "installation", "installation". Scope ntawm lawv daim ntawv thov yog dav heev. Fittings yog cov nodes (kev sib txuas), yam tsis muaj qhov nws tsis tuaj yeem txhim kho cov pa roj, dej, cov kav dej kub thiab lwm yam. Raws li qhov chaw lawv tau nruab, lawv hu ua kev sib txuas thiab nruab nrab. Cov qub yog siv los txuas ntau yam khoom siv rau hauv nruab nrab cov kav dej. Intermediate fittings yogknots uas, raws li txoj cai, yog tsim nyob rau hauv qhov chaw ntawm kev sib txuas ntawm cov kav dej. Nyob rau hauv rooj plaub ntawm kev hloov cov kev taw qhia ntawm cov kav dej, khoov yog siv. Adapters thiab couplings tsuas yog ntsia rau ntawm cov ntu ncaj. Hla yuav tsum tau thaum txhim kho ob-txoj kev ceg ntawm lub raj xa dej, thiab tees yog xav tau rau ib-txoj kev.
Txhua qhov fittings muaj cov khoom sib txawv, nyob ntawm seb cov khoom siv los ntawm qhov lawv tau ua. Yog li, tooj dag nodes muaj kev cuam tshuam zoo, ua haujlwm ntev thiab kub ua haujlwm. Lawv yog siv nyob rau hauv technologies pipelines, dej thiab cua sov pipelines. Txhawm rau muab lawv muaj zog tiv thaiv corrosion, lawv tau coated nrog ib txheej ntawm nickel lossis chromium.
