Low noise water-control valve for hydraulic and sanitary pipes

Details Low noise water-control valve for hydraulic and sanitary pipes Low noise water-control valve for hydraulic and sanitary pipes

1995-06-28

1997-11-25

Walton, George L.

Valves and valve actuation

Lost motion between actuator and valve

Overload release

1374545, 192 561, 251229, 251267, 464 41, F16D 702, F16K 3144

Patent

active

056903138

ABSTRACT:
A noiseless valve includes a leading spiral spindle (4) having a thread (8) at one end by which it is screwed into a spiral (8') of a piston holder (10). The piston holder (10) has a cylindrical shape and is placed into a valve body (1). The leading spiral spindle is secured by the key (13) in axial direction. A piston (12) is attached to an upper part (12) of the holder (10). The piston (16) has an edge rim with two teeth (18) cooperating with grooves (22) furnished on posts (21) of a rubber seal holder (19). The rubber seal holder (19) is attached to the valve body (1) at an end where the piston (16) stands out. The piston (16) is pressed against a rubber seal (23) placed in the rubber seal holder when the valve is closed. Two spiral teeth (6', 10'), disposed diametrically opposed and mutually shifted by 90.degree., are provided on a bottom head surface of the piston holder (10) and on a rim (6) of the leading spiral spindle (4). At least two spring-type teeth (14) are attached to the piston holder (10) which teeth (14) are coupled with corresponding teeth (15) furnished on an inner surface of the valve body (1). Jumping of the spring-type teeth (14) over the teeth (15) is followed by a sound furnishing a signal that the valve is sufficiently closed and open, respectively.

REFERENCES:
patent: 2608377 (1952-08-01), Streun
patent: 4468001 (1984-08-01), Stanic
patent: 4778149 (1988-10-01), Pesovic et al.
patent: 5060909 (1991-10-01), Stanic
patent: 5406973 (1995-04-01), Lange et al.

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