I-V-Port Ball Valve inesihlalo esimise okwe-'v' noma ibhola elimise u-'v'.Lokhu kuvumela i-orifice ukuthi ivuleke futhi ivalwe ngendlela elawulwa kakhulu, ngesici esiseduze sokugeleza komugqa.Lolu hlobo lwe-valve lwaziwa nangokuthi i-valve yokulawula ngoba ama-flow velocities adinga ukulawulwa kuye ngokuthi isetshenziswa kanjani.