E hoʻomalu i ka walaʻau Valve i kekahi manawa a hiki i 100 DB a ʻoi aku paha, e paʻakikī ke lawe i nā poʻe kokoke iā ia.ʻO ke kani o ka valve control maʻamau mai ka haʻalulu o ka spool, aia nā ea holo wikiwiki i hana ʻia e ka leo dynamic gas, akā ma muli o ka uila, cavitation, kahe i hoʻokumu ʻia e ka wai dynamic ...
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