ʻI he kulupu ʻo e hydrocarbons faingofua, Neongo ʻoku ʻikai ke fuʻu maʻolunga ʻa e vela ʻo e afi acetylene, ʻoku ne fakatupu ha vela lahi ʻi he taimi ʻoku vela ai ʻi he ʻao ʻo e vai huhuʻa, angamaheni ʻaki hono fakaʻaongaʻi gaseous vai.
Koeʻuhi ko e fakangatangata ʻa e vai lolotonga acetylene afi, ʻOku siʻisiʻi e vela absorption ʻe vaporization, ʻo iku ai ki he mafana ʻo e ʻea.