CIRCULATION DEVICE FOR BATHTUB

PROBLEM TO BE SOLVED: To provide a circulation device for a bathtub that can conduct an easy removal of an on-off valve, prevent water leakage at a flow-channel-changed part, and raise the discharge speed of heated water heated by a water heater.SOLUTION: The circulation device 10 for a bathtub is constituted of: an outside cylinder body 11 outside a bathtub; a tightened cylinder body 20 inside the bathtub; a partitioning member 27 that is assembled with the tightened cylinder body 20 and partitions and forms a flow channel for taking in bathtub water and a flow channel for discharging heated water heated by a water heater into the bathtub; a filter cover 44 mounted on the outer surface of the partitioning member 27. The partitioning member 27 is formed with a flow channel direction changing part 33 for changing the directions of the flow channel for taking in bathtub water and the flow channel for discharging, integrally with a body 28 of the partitioning member. The flow channel for taking in and flow channel for discharging for which the directions have been changed is mounted with a valve cover 39 for holding a valve 36 of the on-off valve 35, and the valve cover 39 is provided with a tilted part 39b for narrowing down the flow channel.