Ivalvu ye-ball yokugqamisa yezintathu ibonisa isikhombisa sokuqinisekisa, futhi umzimba wesandla futhi ibhola levalvu liboniswa ngemibhobho emine emathathu. Ibhola elinokuhlobo lokugqamisa elinokuhlobo lokugqamisa liboniswa phakathi kwezindawo zebhola, futhi ikhanda elinokuhlobo lokugqamisa elinokuhlobo lokugqamisa liboniswa phakathi kwezindawo zebhola, futhi ibhola lingayiqiniso kwiqiniso. Kukhona isiqiniseko esikhombisa isikhombisa kusukela kwesikhathi sepipelini ukuze sifikelele.
Isizinda sokusebenza sokuqinisekisa isivalo se-ball yokugqamisa yezintathu ukugqamisa isithunywa ukuze isivalo sifungulwe noma sifungwe. Ngokugqamisa ibhola ngezinsuku 90°, ungakwazi ukuguqula indlela yezindawo ezithunyelwe, ukuze uqinisekise isivalo se-ball. Isivalo sisebenza ngokuthi sifaka, isilinganiso esincane, isiqiniseko esiqinisekile, nesinye. Isimo sakhe, isikhombisa isikhombisa futhi isikhombisa sisezindaweni ezivulekile, esingakwazi ukubanjwa ngumedium.
