2. Gulu ndi makhalidwe a ma valve oyendera kunja
Chongani valve:
1. Malinga ndi kapangidwe kake, kangagawike m'mitundu itatu: valavu yokweza, valavu yoyang'ana ndi gulugufe.
①Lift check valve ingagawidwe m'magulu awiri: ofukula ndi yopingasa.
②Mavavu oyendera ma swing amagawidwa m'mitundu itatu: chotchinga chimodzi, chopiringizika pawiri ndi ma flap angapo.
③Vavu yagulugufe ndi mtundu wowongoka.
Mawonekedwe olumikizirana a ma valve omwe ali pamwambapa amatha kugawidwa m'mitundu itatu: kulumikizana kwa ulusi, kulumikizana kwa flange ndi kuwotcherera.
Nthawi zambiri, mavavu okwera okwera (ocheperako) amagwiritsidwa ntchito pamapaipi opingasa okhala ndi mainchesi 50 mm. Valavu yowunikira mowongoka imatha kuyikidwa pamapaipi onse opingasa komanso oyima. Vavu yapansi nthawi zambiri imayikidwa papaipi yoyima ya polowera, ndipo sing'angayo imayenda kuchokera pansi kupita pamwamba. Ma valve okweza cheke amagwiritsidwa ntchito pomwe kutseka mwachangu kumafunika.
Chovala choyang'ana cha swing chingapangidwe kukhala chovuta kwambiri chogwira ntchito, PN ikhoza kufika ku 42MPa, ndipo DN ikhozanso kukhala yaikulu kwambiri, yaikulu kwambiri imatha kufika kuposa 2000mm. Kutengera ndi zinthu za chipolopolo ndi chisindikizo, chingagwiritsidwe ntchito pa sing'anga iliyonse yogwira ntchito komanso kutentha kulikonse. Sing'anga ndi madzi, nthunzi, gasi, sing'anga zowononga, mafuta, chakudya, mankhwala, etc. Sing'anga kutentha ntchito osiyanasiyana ndi pakati -196 ~ 800 ℃. Nthawi yoyenera ya valavu ya butterfly ndi yotsika kwambiri komanso mainchesi akulu.
3. Kusankhidwa kwa valve yowunikira nthunzi kuyenera kukwaniritsa zofunikira izi
1. Kupanikizika kumayenera kupirira PN16 kapena kupitilira apo
2. Zinthuzo nthawi zambiri zimaponyedwa zitsulo ndi zitsulo zosapanga dzimbiri, kapena chitsulo cha chrome-molybdenum. Sikoyenera kugwiritsa ntchito chitsulo chosungunuka kapena mkuwa. Mukhoza kusankha mavavu oyendera zitsulo zotumizidwa kunja ndi ma valve oyendera zitsulo zosapanga dzimbiri.
3. Kutentha kwa kutentha kuyenera kukhala osachepera 180 madigiri. Nthawi zambiri, ma valve osindikizira otsekedwa sangathe kugwiritsidwa ntchito. Mavavu olowera kunja kwa nthunzi kapena ma valve onyamula nthunzi ochokera kunja amatha kusankhidwa, ndipo zisindikizo zolimba zazitsulo zosapanga dzimbiri zimagwiritsidwa ntchito.
4. Njira yolumikizira nthawi zambiri imatengera kulumikizana kwa flange
5. Mawonekedwe apangidwe nthawi zambiri amatengera mtundu wa swing kapena kukweza.