CONTROL KNOB FOR THERMOSTATICALLY REGULATED MIXING VALVE

摘要

A control assembly used on a thermostatically regulated mixing valve has a housing extending along an axis and a stem in the housing axially displaceable to adjust the thermostatically regulated temperature of the valve. The assembly has a nut threaded on the housing, axially linked to the valve stem, and rotatable about the axis in one direction to move axially inward and move the stem axially inward and rotatable in the opposite direction to move axially outward and move the stem axially outward. An abutment sleeve engageable over the valve housing is formed with a radially outwardly open passage and interengaging formations on the abutment sleeve and valve housing rotationally couple same together. The housing is formed in the sleeve with a radially outwardly open groove level with the passage and a clip engages through the passage with the groove and axially couples the sleeve to the valve housing. A sleevelike knob engaged over the nut and abutment sleeve is formed with a radially throughgoing aperture and the adjustment sleeve is formed level with the aperture with a radially outwardly open seat. Interengaging formations on the knob and on the nut rotationally couple same together but permit relative axial movement so that the knob rotates with the nut but does not move axially therewith. A retaining element engaged radially in the aperture of the knob and in the seat of the adjustment sleeve retains the adjustment sleeve and knob against relative axial displacement.