Patent ID: 8640969

Claim:
A thermostatic mixing valve, comprising: a hollow body having a first inlet for water, a second inlet for water, and an outlet for mixed water in fluid communication with the first inlet and/or the second inlet via a mixing chamber, and an axially extending thermostatic actuator comprising a stem, an enlarged portion and a heat sensitive bulb, said bulb extending into the mixing chamber, wherein the thermostatic actuator is arranged to be axially displaced between a first end position in which only the first inlet is connected to the outlet and a second end position in which only the second inlet is connected to the outlet, a biasing means is configured to act on the thermostatic actuator towards the first end position, in which position a portion of the thermostatic actuator is arranged to act as a valve in contact with a valve seat to close the second inlet, so that the thermostatic actuator is displaced in a sleeve member of larger diameter defining a tubular path which extends coaxially with the enlarged portion for conveying water from the second inlet towards the mixing chamber, and wherein said sleeve member is configured to be arranged to restrict the flow of water from the second inlet past the enlarged portion of the thermostatic actuator during its axial displacement until the thermostatic actuator reaches the second end position.