Lub cev valve tau muab faib ua asymmetrical sab laug thiab sab xis ib nrab raws tus ntoo khaub lig-section perpendicular mus rau axis ntawm cov channel. Lub pob yog thauj los ntawm qhov sib cais. Sab laug thiab sab xis ntawm lub valve lub cev yog txuas nrog flanges lossis threads.
Vim tias lub cev lub cev tau muab faib ua ob ntu, piv nrog rau cov khoom sib xws, qhov hnyav ntawm ib nrab lub cev lub cev yog sib dua thiab casting (forging) thiab machining yog yooj yim. Hom pob valve no haum rau kev nce qib
