Water-sanitary control valve

摘要

The valve has a leading threaded spindle (4) and is designated for water-sanitary fittings. The design characteristics of the valve in operation do not provoke water hammers and noise in installation. In this valve the leading threaded spindle (4) is screwed by its thread (8) into a holder (10) of a piston (16) and retained therein by a key (13). On the upper part (12) of the holder (10) there is fitted the piston (16) on the edge rim of which two teeth (18), located in grooves (22) on posts (21) of a rubber seal (23) holder (19) are provided. On the bottom head surface of the holder (10) and on the rim (6) of the spindle (4) there are provided two opposed and mutually shifted by 90 DEG spiral teeth (6', 10'). On the holder (10) there are provided at least two teeth (4) that are coupled with corresponding teeth (15) on the valve body (1). They are making possible, in open/closed positions of the valve, slip-friction of the valve, thus preventing overtightening.