Yuav ntsuas cov yeeb nkab thiab Fittings li cas
Kev txiav txim siab seb cov kav dej loj npaum li cas koj xav tau rau koj qhov project tuaj yeem ua rau tsis meej pem. Ntau tus neeg xav tias cov yeeb nkab loj yog lub taub sab nraud ntawm cov yeeb nkab - tab sis "pipe size" tiag tiag yog hais txog qhov hu ua "nominal diameter."
Fittings tuaj yeem ua rau tsis meej pem. Lawv cov diameters sab hauv yuav tsum loj txaus kom haum rau cov yeeb nkab sab nraud txoj kab uas hla. Piv txwv li, ib nrab ntiv tes yas luj tshib, muaj ib txoj kab uas hla sab nraud ntawm li 1-1/4 ntiv tes.
Siv phau ntawv qhia no los pab koj nrhiav cov yeeb nkab thiab qhov loj me uas koj xav tau rau koj qhov project tom ntej.
Hloov ua txoj kab uas hla mus rau Nominal Diameter
Txoj hauv kev yooj yim tshaj plaws los nrhiav seb qhov nominal yeeb nkab loj npaum li cas koj xav tau yog siv ua raws li cov kauj ruam no thiab siv daim ntawv hloov dua siab tshiab hauv qab no.
Rau Txiv Neej Xov1. Ntsuas Qhov Sab Nraud Sab Nraud (OD) ntawm koj cov yeeb nkab lossis cov yeeb nkab haum:
2. Siv daim ntawv qhia ntawm nplooj ntawv no txhawm rau nrhiav cov kab nominal (pipe loj). |  |
Rau Poj Niam Xov1. Ntsuas Qhov Sab Hauv Qhov Ncauj (ID) ntawm koj cov yeeb nkab lossis cov yeeb nkab haum (siv tus pas ntsuas lossis daim kab xev ntsuas). 2. Siv daim ntawv qhia ntawm nplooj ntawv no txhawm rau nrhiav cov kab nominal (pipe loj). |  |
Nominal Diameter Conversion Chart
(Txhua qhov ntsuas hauv nti)
| Sab nraud lossis sab hauv | Decimal sib npaug | Nominal Dia | Cov xov xwm ib nti |
| 5/16 | 0.313 | 1/16 | 27 |
| 13/32 | 0.405 | 1/8 | 27 |
| 35/64 | 0.540 | 1/4 | 18 |
| 43/64 | 0.675 | 3/8 | 18 |
| 27/32 | 0.840 | 1/2 | 14 |
| 1-3/64 | 1.050 | 3/4 | 14 |
| 1-5/16 | 1.315 | 1 | 11-1/2 |
1-21/32 | 1.660 | 1-1/4 | 11-1/2 |
| 1-29/32 | 1.900 | 1-1/2 | 11-1/2 |
| 2-3/8 | 2.375 | 2 | 11-1/2 |
| 2-7/8 | 2.875 | 2-1/2 | 8 |
| 3-1/2 | 3.500 | 3 | 8 |
| 4 | 4.000 | 3-1/2 | 8 |
| 4-1/2 | 4.500 | 4 | 8 |
Tubing vs
Cov yeeb nkab thiab raj tsis ntsuas tib yam.Tubing yog ntsuas thiab muaj npe raws li qhov tseeb sab nraud ntawm lub raj.
PEX, lossis Cross-Txuas Polyethylene Tubing, yog lwm lub tshuab ua kom nrov, thiab nws tau ntsuas thiab muaj npe los ntawm txoj kab uas hla.
Piv txwv:
Tubing vs | Sab nraud txoj kab uas hla |
| 1/2" tub | 27/32" |
| 1/2 "size tubing | 1/2" |
Xaiv Xov Hom
Ib qho ntawm cov xov zoo tshaj plaws yogNational Pipe Xov (NPT).Cov no tuaj hauv txiv neej (NPT, MPT, lossis MNPT) thiab poj niam (FPT lossis FNPT). Cov no feem ntau yog tapered threads siv nyob rau hauv kev koom tes thiab sealing kav.
Lwm txoj xov zoo yogNational Standard Free-Fitting Straight Mechanical Pipe Thread (NPSM). Cov kav hlau ncaj ncaj no feem ntau yog siv rau cov khoom siv kho tshuab.
BSP xov daim ntawv sawv cev rau British Standard Pipe. Nws yog raws li kev lag luam loj dua li qhov tseeb txoj kab uas hla.
