Hikelok o loʻo i ai le tele o ituaiga o oloa, e aofia ai valve meafaigaluega ma mea faʻapipiʻi, oloa maualuga maualuga, oloa mama maualuga, vaʻavaʻa faʻagasologa, masini masini, faiga faʻataʻitaʻiga, faiga faʻapipiʻi muamua, masini faʻapipiʻi ma mea faigaluega meafaigaluega.
Hikelok mea faigaluega paipa fa'asologa fa'asologa e ufiufi TCN, TPN, THN, TLN, TRB, PC, TP, THP, THC, TA, TME, TSE, T45E, TFE, T45FE, TMT, TFBT, TFRT, TMST, TMBT, TFT, TFC, TPU, UBJ, UGJ, UOJ. Ole lapopo'a e amata mai ile 1/8 ile 2 inisi. Ole maualuga ole mamafa ole galuega e o'o ile 15,000 psig (1,034bar).
