Ko te Euro Brass Spring Check Valve he mea hanga mai i te parahi hangai, e kiia ana hoki ko te waapa kore-whakahoki, i hangaia hei whakahaere i te rerenga whakamuri o te punaha whakahaere wai, ka tukuna te wai e te kopae ka rere ki te huarahi kotahi, e whakamahia nuitia ana mo te paipa, te pupuhi, me te paipa.