Valves

摘要

A thermostatic mixing valve having a manually operable actuator for user selection of water temperature and flow rate, where the actuator is configured to permit both simultaneous and independent adjustment of the water temperature and the flow rate.

主权项

1. A thermostatic mixing valve comprising:
a manually operable actuator for user selection of water temperature and flow rate, a proportioning valve for controlling mixing of hot and cold water according to user selection of outlet water temperature, said proportioning valve comprising a valve member movable between hot and cold seats to set the user selected outlet water temperature; said actuator being operatively connected to said valve member for controlling axial movement of said valve member between said hot and cold seats; wherein during operation, said hot seat is fixed and said cold seat is movable toward and away from said hot seat to set the user selected flow rate, and said actuator is operatively connected to said cold seat by a flow coupling device for converting one of pivotal and rotational movement of said actuator into axial movement of said cold seat to set the user selected outlet water flow rate, and said actuator is coupled to said valve member by a temperature coupling device for converting the other of pivotal and rotational movement of said actuator into axial movement of said valve member to set the user selected outlet water temperature, wherein during shut off of water flow, said valve member is in direct contact with each of said hot seat and said cold seat, wherein said temperature coupling device and flow coupling device are configured to permit rotational movement and pivotal movement of said actuator independently of each other such that the water temperature and flow rate are adjustable independently of each other by separate rotational and pivotal movement of said actuator, and wherein said temperature coupling device and flow coupling device are also configured to permit simultaneous rotational movement and pivotal movement of said actuator such that the water temperature and flow rate are adjustable simultaneously by a combination of the rotational and pivotal movement of said actuator.