Kukweza valavu yowunikira kumatanthawuza valavu yomwe imatsegula ndi kutseka diski malingana ndi kutuluka kwa sing'anga yokha kuti iteteze kubweza kwapakati, komwe kumatchedwanso valve check, valve ya njira imodzi, valve counterflow, ndi valve back pressure. Check valve ndi valve automatic. Ntchito yake yayikulu ndikuletsa kubweza kwapakati, kupopera kwapampu ndi mota yoyendetsa, ndikutulutsa sing'anga yamachidebe. Ma valve owunika amathanso kugwiritsidwa ntchito m'mapaipi kuti apereke makina othandizira pomwe kupanikizika kumatha kukwera pamwamba pa kukakamiza kwadongosolo. Ma valve owunikira amatha kugawidwa kukhala ma valve oyendera (ozungulira molingana ndi pakati pa mphamvu yokoka) ndikukweza ma valve (akuyenda mozungulira).
Deta yaukadaulo
| PN (MPa)Kupanikizika mwadzina | 1.6 | 2.5 | 4.0 | |
| (MPa)Kupanikizika kwa mayeso | Kuyesa kwamphamvu kwa Shell | 2.4 | 3.75 | 6.0 |
| Seal test (Zamadzimadzi) | 1.76 | 2.75 | 4.4 | |
| Kuyesa kwa Seal (Gasi) | 0.5-0.7 | |||
| Yoyenera sing'anga | madzi, nthunzi, mafuta | PMa nitric acid | Rmafuta | |
| Kutentha koyenera | ||||