Valavu ndi chipangizo chomwe chimagwiritsidwa ntchito popanga magetsi. Imayendetsedwa ndi chogwirira kapena gudumu lamanja. Nthawi zonse, kuzungulira kwa chogwirira ndi gudumu lamanja kumayang'ana koloko kumatanthauzidwa ngati njira yotsekera, ndipo kuzungulira kozungulira kumatanthauzidwa ngati njira yotsegulira. Komabe, njira yotsegulira ndi kutseka kwa ma valve ena ndi yosiyana ndi yomwe ili pamwambayi, ndipo muyenera kusamala kuti muwone zizindikiro zotsegula ndi zotseka musanagwiritse ntchito.
Pogwira ntchito bwino, ngati simusamala njira yolondola yogwirira ntchito, imayambitsa kuwonongeka kwa valve msanga komanso kuyambitsa ngozi. Zochita zatsimikizira kuti ntchito yolakwika ya valavu imatha kuwononga gudumu la valve ndi chogwirira, kukanda tsinde la valve ndi kusindikiza pamwamba, kapena kuphwanya malo osindikizira, kuchititsa kuwonongeka kwa valve, zomwe zidzakhudza kwambiri kupanga kwamagetsi kwamagetsi.
Ntchito yopangira ma valve:
1. Wrench yoyenera iyenera kugwiritsidwa ntchito pa ntchito ya valve. Ndizoletsedwa kugwiritsa ntchito valavu yaing'ono yokhala ndi wrench yaikulu, ndipo valavu yaikulu ikugwiritsidwa ntchito ndi wrench yaing'ono. Ndizoletsedwa kwambiri kuwonjezera chowumitsa ku wrench.
2. Imani pambali pa gudumu la valve pamene mukugwira ntchito. Ndizoletsedwa kuyimirira moyang'anizana ndi tsinde la valavu kuletsa sing'anga yomwe ili mupaipi kuti isadutse kuchokera ku valavu yonyamula ndikuvulaza anthu.
3. Gwiritsani ntchito wrench kuti mugwiritse ntchito chitseko chamanja. Asanayambe kugwira ntchito, wrench ndi gudumu lamanja la valve ziyenera kutsekedwa mwamphamvu kuti zisavulaze chifukwa cha kutsetsereka. (Makamaka kuyimirira pansi komwe kutha kutsetsereka)
4. Opaleshoniyo iyenera kuchitidwa ndi mphamvu ya mkono, ndipo ndizoletsedwa kudalira mphamvu yokoka ya thupi kuteteza wrench kuti isatengeke ndi kugwa.
5. Pamene ntchito mavavu a asidi ndi zamchere mapaipi, pali kuthekera kutayikira dongosolo. Mavavu omwe amalumikizana mwachindunji ndi ma acid ndi ma alkalis ayenera kuvala zida zoteteza anthu ogwira ntchito zomwe zimateteza kuvulala kwa asidi ndi zamchere, komanso kukhala ndi antchito apadera owunika ndikudziteteza.
6. Ntchito ya valavu iliyonse ya soda iyenera kuchitidwa ndi manja. Ndizoletsedwa kugwiritsa ntchito wrench. Magolovesi ayenera kuvala panthawi ya opaleshoni kuti asapse. Ngati pali kudontha, muyenera kuvala zovala zosayaka moto.
7. Kugwira ntchito kwa chitseko chapawiri cha mpope wamadzi wa boiler kuyenera kuchitidwa ndi manja, ndipo magudumu awiriwa ayenera kusinthidwa.
8. Panthawi ya opaleshoniyo, ngati ikumva yolemetsa, bwererani ndikuchitanso, kenaka mugwiritseni ntchito mpaka valve itatsegulidwa kapena kutsekedwa.
