He aha te Pūrererere Valve? Ko te rewharewha he paera e whakamahi ana i te momo kopae tuwhera me te mema kati hei whakahoki mo te 90° ki te whakatuwhera, ki te kati, ki te whakatika ranei i te rere waenga. Ehara i te mea ngawari noa te hangahanga, he iti te rahi, he maamaa te taumaha, he iti te kohi rauemi, he iti i te i...
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