ʻO ka pahu kānana keleawehana ʻia me ke keleawe hoʻoheheʻe ʻia, ka mea i kapa ʻia ʻo brass filter valve, i hoʻolālā ʻia e kānana i nā haumia i loko o ka ʻōnaehana hoʻomalu wai, kahe ka wai i hoʻokahi ʻaoʻao a kānana e s / s kānana kānana o ka valve, hoʻohana nui ʻia no ka plumbing, pumping, a me nā pipelines.