VALVE HEAD Russian patent published in 2004 - IPC

FIELD: water intake sanitary fittings, particularly for closing water flow and smooth changing water flow rate along with providing low noise level in all range of water flow rates and pressures.

SUBSTANCE: valve head comprises body with outer thread and lock-nut with seal ring for valve head securing in fitting hole. Formed under thread is tubular wall having window for working liquid outflow. Shaft with radial extension formed in lower part thereof, sealing ring and skid-washer is installed in body. Shaft is fixedly connected with movable ceramic washer by means of carrier. Fixed ceramic plate and elastic end seal pressing ceramic plate are arranged in body. Body has one rectangular window located between upper end of movable ceramic plate and thread. Rectangular window extends 180^o along body circumference. Lower and upper body parts are connected one to another by semi-cylindrical tubular post. Valve head has central stepped orifice for shaft installation formed so that shaft extension freely passes through orifice step with greater diameter. When shaft is installed in step with lesser diameter shaft extension may pass only through above window. When shaft is rotated shaft orifice rests upon body wall rib near step with lesser diameter to limit shaft rotation.

EFFECT: improves processibility index and service performance.

5 cl, 10 dwg