A pilot actuator for controlling the operation of a control valve. The control valve can be part of a thy-type fire suppression sprinkler system in which the sprinkler piping network is filled with pressurized gas such as, for example, air, nitrogen, or another gas. The pilot actuator is a differential valve that actuates the control valve when the gas pressure in the sprinkler piping network is at or below a value for tripping or actuating the pilot valve to the open position. The actuator assembly defines a neutral chamber that is at an intermediate pressure in comparison to pressures at the inlet port and the measuring port when the pilot actuator is in a stand-by state.

A sanitary valve (1) for use in a fitting (2), including a valve housing (3), a main valve (4) which has a movable diaphragm (5), and a pilot valve (6), by which the main valve (4) can be actuated. The position of the diaphragm (5) can be specified by the position of a valve tappet (7) of the pilot valve (6), and a tube securing element (9) which is paired with an inlet opening (8) of the valve housing (3) is formed on the valve housing (3) and/or a mouthpiece securing element (11) or a jet regulator securing element which is paired with an outlet opening (10) of the valve housing (3) is formed on the valve housing (3) and/or the sanitary valve (1) has a clamping device (12), by which the valve housing (3) and an adjustment device part (13) can be rigidly connected together or are rigidly connected together.

A sanitary valve (1) for use in a fitting (2), including a valve housing (3), a main valve (4) which has a movable diaphragm (5), and a pilot valve (6), by which the main valve (4) can be actuated. The position of the diaphragm (5) can be specified by the position of a valve tappet (7) of the pilot valve (6), and a tube securing element (9) which is paired with an inlet opening (8) of the valve housing (3) is formed on the valve housing (3) and/or a mouthpiece securing element (11) or a jet regulator securing element which is paired with an outlet opening (10) of the valve housing (3) is formed on the valve housing (3) and/or the sanitary valve (1) has a clamping device (12), by which the valve housing (3) and an adjustment device part (13) can be rigidly connected together or are rigidly connected together.

A flush valve includes a valve housing defining a fluid passageway between a fluid inlet and a fluid outlet. The fluid passageway includes a diaphragm valve seat disposed between the fluid inlet and the fluid outlet. The flush valve additionally includes a diaphragm assembly including a diaphragm and a disc. The diaphragm includes a primary opening and a bypass opening. The primary opening receives the disc therein and the bypass opening allowing water under pressure supplied to the fluid inlet to pass from a fluid inlet side of the diaphragm into a chamber in the fluid passageway. The flush valve additionally includes a relief valve configured to selectively control fluid flow from the chamber to the fluid outlet. The relief valve comprises a stationary valve element and a rotatable valve element each having at least one opening and being rotationally positionable relative to one another to regulate fluid flow.

A flush valve includes a valve housing defining a fluid passageway between a fluid inlet and a fluid outlet. The fluid passageway includes a diaphragm valve seat disposed between the fluid inlet and the fluid outlet. The flush valve additionally includes a diaphragm assembly including a diaphragm and a disc. The diaphragm includes a primary opening and a bypass opening. The primary opening receives the disc therein and the bypass opening allowing water under pressure supplied to the fluid inlet to pass from a fluid inlet side of the diaphragm into a chamber in the fluid passageway. The flush valve additionally includes a relief valve configured to selectively control fluid flow from the chamber to the fluid outlet. The relief valve comprises a stationary valve element and a rotatable valve element each having at least one opening and being rotationally positionable relative to one another to regulate fluid flow.

A flush valve apparatus comprising a main body, an outer cover, an inner cover, a valve assembly, and a back-pressure chamber, wherein the outer cover is coupled to an upper end of the main body, the inner cover is positioned over the valve assembly and under the outer cover, the valve assembly comprises a valve body and is positioned at an interior of the main body, the back-pressure chamber is defined by a lower surface of the inner cover and an upper surface of the valve assembly, and wherein one or more springs are positioned substantially vertically in the back-pressure chamber. The one or more springs are effective towards minimizing flush water variation between flush cycles and towards attenuation flush valve erratic behavior.

A flush valve apparatus comprising a main body, an outer cover, an inner cover, a valve assembly, and a back-pressure chamber, wherein the outer cover is coupled to an upper end of the main body, the inner cover is positioned over the valve assembly and under the outer cover, the valve assembly comprises a valve body and is positioned at an interior of the main body, the back-pressure chamber is defined by a lower surface of the inner cover and an upper surface of the valve assembly, and wherein one or more springs are positioned substantially vertically in the back-pressure chamber. The one or more springs are effective towards minimizing flush water variation between flush cycles and towards attenuation flush valve erratic behavior.

A flushometer system includes a pressure vessel with a flow path defined between a valve inlet chamber and an outlet and a valve assembly disposed within the pressure vessel and configured to selectively open and close the flow path. A primary diaphragm assembly is disposed within the pressure vessel and includes a primary disc configured to be moveable to actuate the valve assembly to selectively open and close the flow path between the valve inlet chamber and the outlet, and a primary diaphragm connected to the primary disc. A secondary diaphragm assembly is disposed within the pressure vessel and includes a secondary diaphragm and a secondary disc, the secondary diaphragm assembly configured to actuate the primary diaphragm assembly by venting fluid pressure on one side of the primary diaphragm. An activation assembly is configured to actuate the secondary diaphragm assembly by venting fluid pressure on one side of the secondary diaphragm.

A flush valve assembly including a manifold including an inlet, an outlet, and a fluid passageway positioned between the inlet and the outlet, a motor coupled to the manifold and including a drive gear, a valve cartridge coupled to the manifold, and a shaft extending from the valve cartridge. The shaft includes a valve gear configured to mesh with the drive gear. Rotational motion from the motor is transferred through the drive gear, the valve gear, and the valve shaft to rotate the valve cartridge between a first position and a second position. The flush valve assembly additionally includes a bracket removably coupled to the manifold. The bracket is configured to align the drive gear and the valve gear in a predetermined position.

A fill valve system with a float nested in a container connected to the fill valve and a siphon device passing water out of the container into the toilet tank, with the siphon device having an air vent dimensioned such that: (i) tank refilling is delayed until after the flush valve closes; (ii) the fill valve is not turned on by small leaks in the tank; and (iii) the fill valve turns off when it encounters large leaks in the tank.