Mitundu ya mavavu a zipata.

Mfundo yogwirira ntchito ya valavu yachipata chamanja: Sinthani gudumu lamanja. Kupyolera mu chiyanjano ndi kusagwirizana kwa ulusi pakati pa handwheel ndi tsinde la valve, kwezani kapena kuchepetsa mbale ya valve yolumikizidwa ndi tsinde la valve, potero kukwaniritsa ntchito zotsegula ndi kutseka.

Malinga ndi zinthu za chipolopolo,ma valve pachipataakhoza kugawidwa ngati:

1. Mavavu azitsulo zachitsulo: monga ma valve a carbon steel, ma valve achitsulo, ma valve zitsulo zosapanga dzimbiri, ma valve achitsulo, titaniyamu alloy valves, Monel valves, copper alloy valves, lead alloy valves, etc.

2. Mavavu opangidwa ndi zitsulo zazitsulo: monga ma valve opangidwa ndi mphira, ma valve opangidwa ndi fluorine, ma valve otsogolera, ma pulasitiki opangidwa ndi pulasitiki, ma valve opangidwa ndi enamel.

3. Mavavu azinthu zopanda zitsulo: monga mavavu a ceramic, mavavu agalasi, ndi mavavu apulasitiki.