M'madera a mafakitale, zomangamanga, mphamvu, ndi zina zotero, ma valve ndi zida zofunika kwambiri, ndipo ntchito zawo ndi khalidwe lawo zimakhudza mwachindunji chitetezo ndi mphamvu ya dongosolo. Kusankha wopanga ma valve odalirika sikuti ndi maziko owonetsetsa kuti zida zimagwiritsidwa ntchito, komanso chinsinsi chokulitsa mpikisano wamakampani. MONGA ma valve, monga chizindikiro chodziwika bwino pamakampani, chakhala chisankho choyamba cha ogwiritsa ntchito ambiri omwe ali ndi khalidwe labwino kwambiri la mankhwala, ntchito zamakono zamakono komanso mbiri yabwino ya msika. Nkhaniyi ikuwonetsani zabwino zazikulu za LIKE mavavu mwatsatanetsatane kuti akuthandizeni kusankha mwanzeru.