O le valve o le vaega faʻatonutonu i totonu o le faʻaogaina o le suavai, faʻatasi ai ma galuega o le tipi-off, tulafono faatonutonu, faʻafefe, puipuia o le faʻafefe, faʻamautuina o le mamafa, faʻafefe poʻo le faʻafefe o le mamafa.
Valvalve fa'aaogaina i le fa'aogaina o le vai, mai le va'a fa'agata faigofie i le fa'aogaina otometi fa'alavelave fa'alavelave, o ona ituaiga ma fa'amatalaga e fai si eseese.Valves e mafai ona faʻaogaina e pulea le tafe o ituaiga eseese o vai e pei o le ea, vai, ausa, faʻasalalauga faʻaleagaina eseese, palapala, suauʻu, uʻamea vai ma faʻasalalauga leitio.E tusa ai ma meafaitino, ua vaevaeina foi le valve i uʻamea uʻamea uʻamea, lafo uʻamea uʻamea, uʻamea uʻamea uʻamea (201,304,316, ma isi), chromium molybdenum uamea valve, chromium molybdenum vanadium uamea valve, lua-vaega uamea valve, palasitika valve, leai -standard customized valves, etc.