| 摘要 |
PROBLEM TO BE SOLVED: To provide a bathtub circulation adapter and a bath hot water supply system having the adapter capable of appropriately preventing an allophone generating phenomenon due to vibration of a check valve during supplying hot water into a bathtub.SOLUTION: A bathtub circulation adapter A comprises: a pair of chambers 22 formed inside by partitioning to connect between an outgoing pipe 65a and a return pipe 65b of a water heater for communicating with each other; partition tools 2 that are provided to open an outlet 28 and an inlet 27 of hot water on the pair of chambers 22, respectively; and a plurality of check valves 8 and 4 mounted additionally to the outlet 28 and the inlet 27, respectively, the check valve 4 mounted additionally to the inlet 27 having a valve body part 40 made from an elastic member bending-deformable in a facing direction to a valve seat part 21. The valve body part 40, under a normal condition that maintains the balance between a primary side pressure P1 and a secondary side pressure P2, is provided to separate from the valve seat part 21 so as to form a clearance 25 between the valve seat part 21 and the valve body part 40. |
