Zojambula: Mitundu isanu ndi itatu yodziwika bwino ya mavavu, osavuta kwambiri.Kiyi yamtundu: gawo la imvi ndi chitoliro chomwe madzimadzi amayenda;mbali yofiira ndi valavu ndi chogwirira chake kapena kulamulira;mivi yabuluu imasonyeza momwe valavu imayendera kapena kuzungulira;ndipo mzere wachikasu umasonyeza njira yomwe madzi amayendera pamene valavu yatsegula.

Mitundu yosiyanasiyana ya mavavu onse ali ndi mayina osiyanasiyana.Zodziwika kwambiri ndi gulugufe, tambala kapena pulagi, chipata, globe, singano, poppet, ndi spool:

• Mpira: Mu valavu ya mpira, gawo lopanda kanthu (mpira) limakhala mwamphamvu mkati mwa chitoliro, ndikutsekereza kutuluka kwa madzi.Mukatembenuza chogwiriracho, chimapangitsa mpirawo kuyenda modutsa madigiri makumi asanu ndi anayi, zomwe zimapangitsa kuti madziwo aziyenda pakati pake.

• Gate kapena sluice: Mavavu a zipata amatsegula ndi kutseka mapaipi potsitsa zitseko zachitsulo kudutsa.Mavavu ambiri amtunduwu amapangidwa kuti azikhala otseguka kapena otsekedwa kwathunthu ndipo sangagwire bwino ntchito akakhala otseguka pang'ono.Mapaipi operekera madzi amagwiritsa ntchito ma valve ngati awa.

• Globe: Mipope yamadzi (mapaipi) ndi zitsanzo za mavavu a globe.Mukatembenuza chogwiriracho, mumakhota valavu m'mwamba kapena pansi ndipo izi zimapangitsa kuti madzi opanikizidwa aziyenda m'chitoliro ndikutuluka kudzera mu spout pansipa.Mosiyana ndi chipata kapena sluice, valve ngati iyi ikhoza kukhazikitsidwa kuti ilole madzi ochulukirapo kapena ocheperapo.