| 摘要 |
In a hydro-massage jet fitting for a hot tub wherein the fitting includes a venturi air-induction system which mixes air with water before pumping the water into the tub, there is disclosed an improvement wherein the passageway to conduct air to the fitting extends through the side wall of the tub to an annular space surrounding the body of the fitting and the fitting is modified to conduct the air from this space into the body.
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