Nheyo yemapofu asingapindi mvura

Iyo isina mvura mwenje rivet ine dhizaini isina mvura, uye gasket rerubha rinowedzerwa panguva yekushandiswa kudzivirira hunyoro kubva pakupinda kubva pasi pechivharo cherivet, icho chine yakanaka yekudzivirira mvura.