Ma nā hiʻohiʻona koʻikoʻi o ke kahua ʻoihana, ʻo nā valves nā mea hana nui e hōʻoia i ka mana pololei o ka ʻōnaehana. Ma keʻano he mea hana kiwi kīwila me ka ʻoi aku o 20 mau makahiki o ka ʻike ma ke kahua o nā kiwi ʻoihana, ua lawe mau ʻo LIKE i "ʻoihana, hilinaʻi, a me nā mea hou" e like me kona manaʻo kumu, e hāʻawi ana i nā hopena kiʻekiʻe kiʻekiʻe no nā ʻoihana nui e like me ka aila, kemika, ka mana uila, a me ka hoʻomalu ʻana i ke kaiapuni, a lilo i ikaika ikaika e hāpai i ka hoʻomohala ʻoihana kiʻekiʻe.