Some embodiments include a fluid valve assembly with an outlet base dimensioned to be positioned through a drain in a fluid tank, and a float assembly including a moveable float. The moveable float can form a fluid-tight seal at a first end when the moveable float is coupled to the outlet base, and a flow opening when the moveable float is at least partially decoupled from the outlet base. Some embodiments include a housing positioned with the moveable float, where the housing encloses a suction device coupled to a moveable piston. Some embodiments include an actuable diaphragm positioned in the outlet base, and a compressed air tube or passageway coupled to one side the actuable diaphragm. In some embodiments, the actuable diaphragm is configured and arranged to be actuated by compressed air to move the moveable piston.

A universal canister flush valve having a valve body configured to be fixed relative to a toilet tank and having a hollow wall defining an internal flow passage; a guide post coupled to and extending away from the valve body; a float fitted about and configured to slide relative to the guide post between a closed position and an open position, the float having an open top; and an extender that selectively couples to the open top in a first position, in which a first end of the extender is received in and coupled to the open top, and in a second position, in which a second end of the extender is received in and coupled to the open top, wherein the extender and float define a first overflow height in the first position and define a second overflow height in the second position.

A flapper assembly for a flush valve as well as method of assembly are provided. The flapper assembly includes a frame and multiple buoyancy assemblies attachable to the frame so as to adjust the buoyancy of the flapper assembly. The flapper assembly kit may have adjustable legs attachable to the frame. The flapper assembly kit may have multiple seal members for use in sealing with different sized/shaped valve seats of different sized flush valves.

A flapper assembly for a flush valve as well as method of assembly are provided. The flapper assembly includes a frame and multiple buoyancy assemblies attachable to the frame so as to adjust the buoyancy of the flapper assembly. The flapper assembly kit may have adjustable legs attachable to the frame. The flapper assembly kit may have multiple seal members for use in sealing with different sized/shaped valve seats of different sized flush valves.

A flush valve has a relief valve including a stationary relief valve housing and an axially-translatable valve element. The axially-translatable valve element has an axial end that can be selectively translated to unseal an upper opening in a relief passageway through the stationary relief valve housing in order to permit fluid flow therethrough in order to initiate a flush cycle by the lifting of a diaphragm assembly. The axially-translatable valve element may include lead screw-like features which can be used to axially drive the axially-translatable valve element relative to the stationary relief valve housing to open or close the relief valve.

A flush valve has a relief valve including a stationary relief valve housing and an axially-translatable valve element. The axially-translatable valve element has an axial end that can be selectively translated to unseal an upper opening in a relief passageway through the stationary relief valve housing in order to permit fluid flow therethrough in order to initiate a flush cycle by the lifting of a diaphragm assembly. The axially-translatable valve element may include lead screw-like features which can be used to axially drive the axially-translatable valve element relative to the stationary relief valve housing to open or close the relief valve.

Some embodiments include a fluid control system with an outlet valve assembly, an inlet valve assembly including a venturi inlet valve, and an actuator coupled to the inlet valve assembly. In some embodiments, the actuator can enable a user to control a flush volume of fluid control system. Some embodiments include a moveable float positioned in a chamber of the outlet valve assembly, where the chamber includes a variably-sized upper portion with a volume that is based at least in part on a variable position of the moveable float in the chamber. Some embodiments include a adjustable control valves coupled to an outer surface of the outlet valve assembly and the inlet valve assembly. Some embodiments also include a bellows positioned in and coupled to the variably-sized upper portion. In some embodiments, the bellows are fluidly coupled to the venturi inlet valve and at least one of the control valves.

Disclosed herein is actuation apparatus. The actuation apparatus comprises a diaphragm valve, having an upstream side and a downstream side, opposite the upstream side. The actuation apparatus also comprises a hydraulic actuator, fluidically coupled with the downstream side of the diaphragm valve by a first hydraulic line. The actuation apparatus further comprises a valve fluidically coupled with the upstream side of the diaphragm valve by a second hydraulic line. The actuation apparatus additionally comprises a valve controller coupled with the valve and operable to open and close the valve. Pressurized fluid from the downstream side of the diaphragm valve flows to the hydraulic actuator, via the first hydraulic line, in response to opening of the valve. The hydraulic actuator is configured to actuate in response to receipt of pressurized fluid from the downstream side of the diaphragm valve.

Disclosed herein is actuation apparatus. The actuation apparatus comprises a diaphragm valve, having an upstream side and a downstream side, opposite the upstream side. The actuation apparatus also comprises a hydraulic actuator, fluidically coupled with the downstream side of the diaphragm valve by a first hydraulic line. The actuation apparatus further comprises a valve fluidically coupled with the upstream side of the diaphragm valve by a second hydraulic line. The actuation apparatus additionally comprises a valve controller coupled with the valve and operable to open and close the valve. Pressurized fluid from the downstream side of the diaphragm valve flows to the hydraulic actuator, via the first hydraulic line, in response to opening of the valve. The hydraulic actuator is configured to actuate in response to receipt of pressurized fluid from the downstream side of the diaphragm valve.

A toilet flapper valve assembly is provided. The flapper valve assembly has a flapper, cone and an adjustment dial. The adjustment dial controls the flow of water into and flow of air oat of the cone. Adjustment of the adjustment dial relative to the cone simultaneously adjusts die flow of water into and air out of the cone.