Remaining hot water extraction device for bathtub and remaining hot water extraction adapter

摘要

PROBLEM TO BE SOLVED: To provide a bathtub residual hot water take-out device capable of easily performing residual hot water taking-out work and preventing disadvantage in which hot water leaks out of the residual hot water take-out pipe in other situations than required.SOLUTION: A bathtub residual hot water take-out device of this invention comprises: a discharging pipe passage A and a sucking pipe passage B of which one end is communicated with the bathtub and the other end is communicated with a water heater; and a residual hot water take-out pipe connecting port 25 arranged at the midway part of the sucking pipe passage B. Further, this invention comprises: a junction pipe C communicating between the discharging pipe passage A and the sucking pipe passage B; a first check valve 4 arranged at the junction pipe passage C for allowing a flow of hot water from the sucking pipe passage B to the discharging pipe passage A; a second check valve 5 arranged at the sucking pipe passage B for allowing a flow of hot water in a sucking direction; and a third check valve 6 arranged at the residual hot water take-out pipe connecting port 25 for allowing flow of residual hot water from the sucking pipe passage B to a residual hot water take-out pipe 9c.