Ob NPT thiab BSP yog cov qauv xov yeeb nkab rau ntsia hlau xov siv rau ntawm cov kav dej thiab cov yeeb nkab fittings los kaw cov kav dej.
NPT xov muaj 60 ° kaum sab xis thiab muaj lub npoo tiaj thiab nram hav.
BSP xov muaj 55 ° lub kaum ntse ntse thiab muaj qhov sib npaug peaks thiab nram hav (daim ntawv xov Whitworth)
BSP yog British Standard Yeeb Nkab Cov Qauv Txuj Ci, nws muab faib ua ob hom raws li hauv qab no:
BSPT (British Standard Yeeb Taper), aka G lossis Rp
BSPP (British Standard Yeeb Nkab Parallel), aka R lossis Rc
ISO 228: rau kev sib koom ua ke ntawm sab nraud thiab sab hauv cov xov sib txuas (G) / BSPP.
ISO 7 lossis EN 10226: rau sab nraud taper (R), sab hauv ua rau (Rp) thiab sab hauv taper (Rc) BSPT.
NPT yog Asmeskas Txheem Taper Yeeb Nkab Xov (ANSI / ASME B1.20.1), Taper 1:16.
BSPP yog qhov txawv ntawm ob qho BSPT thiab NPT, vim tias nws tib yam xov.
BSP xov qhov ntev raws li nram no:
NPT xov qhov ntev raws li nram no:
