No nā ʻāpana valve hoʻolei,kila kohu ʻolea me ductile (spheroidal graphite) hoolei hao he elua o ka loa i hoʻohana 'ia nā alloys no ka meaductile haoʻoi aku ka maikaʻi o ka hana anti-rust a ʻoi aku ka maikaʻi o ke kila kuhili ʻole i ka pale wela a me ke kūpaʻa corrosion. Hoʻohana ʻia lākou no ka hana ʻana:
- Nā Kino Pane a me ka pōlele (Ductile Cast Iron or Cast Stainless Steel),
- Nā Kiʻi Puʻupuʻu Butterfly (Stainless Steel a Ductile Iron),
- Nā Noho Valve (Ka hao a i ʻole ke kila kila ʻole)
- Nā Kino Pump Centrifugal a me nā uhi (SS a i ʻole Ductile Iron)
- Nā Pum Impeller a me nā uhi (Stainless Steel, Duplex Stainless Steel)
- Nā Hale Hāpai Pum (Hao Hoohinahinahina a i ʻole Steel Alloy)