To provide an air pump which is connectable even when an air pipe of aeration piping and backwashing piping of a septic tank is reversely laid by mistake, with the air pipe in the mistakenly laid state.
The air pump 1 comprises a pump main body 2, an air tank 3 for discharging from either an outlet port A or B, and a control device 4. The air tank 3 is equipped with an air chamber 11, 12 and 13 partitioned by partitioning walls 14, and a flow path switching device 5 attached thereto. The partitioning walls 14 are provided with branch mouths 9 and 10 for dividing an air flow path. The outlet port A comprises two outlet ports A
COPYRIGHT: (C)2004,JPO
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Tadashi Takahashi
Takashi Watanabe
Suzuki Mitsuyoshi
Kazuya Nishi
Yasuhiko Murayama