Hana ʻia ʻo FOOT VALVES me nā mea plastik kūpaʻa loa a me nā mea kila kila kila, e hiki ai ke hōʻoia i ka hana maikaʻi loa i nā ʻano hana āpau. ʻO kēia mau mea a pau me ka hoʻokō ʻana i kāna hoʻolālā a me kāna polyvalence modular, hana i kahi mea nui i ka hoʻolālā ʻana o kāna mau mea hana.