Flush valve flow control ring
First Claim
1. A diaphragm flow control assembly for a toilet device flush valve including a diaphragm reciprocal between a water flow position and a closed position, a piston attached to the diaphragm, a flow control ring carried by said piston, said flow control ring having flow control passages therein through which all water passes when said diaphragm and piston are in the water flow position, said flow control passages having a direction which forms an acute angle with the axis of said piston and being formed to dissipate power of the water flowing through said flow control assembly whereby said flow control assembly provides a relatively constant flow rate which is independent of water pressure applied thereto.
4 Assignments
0 Petitions
Accused Products
Abstract
A toilet device flush valve has a body with an inlet and an outlet and a valve seat in the body positioned therebetween. There is a movable diaphragm which closes upon the valve seat to control flow between the inlet and the outlet. A piston is attached to the movable diaphragm and there is a flow control ring mounted on the piston. The flow control ring includes water passages forming the sole flow path between the inlet and the outlet when the piston is in the open position. The passages on the flow control ring are sized to correspond to the desired flow rate through the flush valve. The passages extend in a direction to give the water flowing therethrough both axial and circumferential components to dissipate power in the water flowing through the flush valve to provide a relatively constant flow rate which is independent of the water pressure applied at the flush valve inlet.
106 Citations
23 Claims
- 1. A diaphragm flow control assembly for a toilet device flush valve including a diaphragm reciprocal between a water flow position and a closed position, a piston attached to the diaphragm, a flow control ring carried by said piston, said flow control ring having flow control passages therein through which all water passes when said diaphragm and piston are in the water flow position, said flow control passages having a direction which forms an acute angle with the axis of said piston and being formed to dissipate power of the water flowing through said flow control assembly whereby said flow control assembly provides a relatively constant flow rate which is independent of water pressure applied thereto.
- 8. A flow control ring for mounting on a movable valve element to control water flow through a toilet device flush valve, said ring having flow control passage means therein, the size of which being determined by the desired flow rate through the toilet device flush valve, said ring being movable relative to the valve element and having locating means thereon which cooperate with portions on the movable valve element to insure a predetermined relationship for said passage means relative to the movable valve element.
- 12. A diaphragm flow control assembly for a toilet device flush valve including a diaphragm, a piston attached thereto, said diaphragm and piston being reciprocal between a water flow position and a closed position, a flow control ring on said piston, said flow ring having flow control passages therein through which all water passes when said diaphragm and piston are in the water flow position, said ring being movably mounted on said piston with said ring and piston having cooperating locating means thereon which insure a predetermined relationship for said passages relative to said piston.
- 19. A toilet device flush valve including a body having an inlet and an outlet, a valve seat in said body, a movable diaphragm for closing upon said valve seat to control flow between said inlet and outlet, a piston attached to and movable with said diaphragm, a flow control ring on said piston, said flow control ring including water passage means forming the sole flow path between said inlet and outlet when said piston is away from said valve seat, the water flowing through said passages moving in a direction forming an acute angle with the axis of said piston, said passage means having a flow area determined by the desired flow rate of said flush valve.
Specification