REPLACEABLE HEAD OF VALVE Russian patent published in 1997 - IPC

FIELD: sanitary engineering. SUBSTANCE: replaceable head of a valve has housing with a stop lock-nut mounted on the housing and provided with a sealing members, spindle mounted inside the housing, race, and valving unit received in the valving unit. The spindle is provided with a radial projection connected with the pressing washer through a cross-piece and sealed with a ring member. The race is connected with the housing of the cross-piece. The valving unit is made up as movable and fixed plates provided with the flowing ports and bears on the sealing ring. From the side of the outlet of the housing of the spindle the end face of the housing is provided with two open diametrical mutually perpendicular grooves that separate the end face portion of the housing into four portions that define projections partially overlapping the opening in the housing. The height of two portions, which are positioned diametrically and form stops for the spindle, is greater than that of the others. The spindle has an additional projection coaxial to the first one and interacts with the stops of the housing when the spindle is at the end positions. EFFECT: enhanced reliability. 2 cl, 13 dwg