I-valve ye-butterfly ephindwe kabili, njengento eyinhloko emkhakheni wezimboni, idlala indima ebalulekile ezinhlelweni ezihlukahlukene zoketshezi.Isakhiwo sayo esilula, isisindo esilula, ukuvulwa ngokushesha, ukuvala ngokushesha, ukusebenza kahle kokubeka uphawu, impilo ende yenkonzo nezinye izici kuyenza isetshenziswe kabanzi kumakhemikhali indu...
Funda kabanzi