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 rigid piston assembly for use in a conventional flush valve includes a rigid piston and a solenoid configured to fixedly engage within the valve body. A flush valve for a plumbing fixture as well as a method of retrofitting a piston valve into a diaphragm flush valve body which includes a rigid piston and solenoid configuration.

The present invention provides a leakage proof, water saving flushing device for effectively managing water resources through an interlocking mechanical assembly. The said interlocking mechanical assembly is made up from a water channel gate arm having a distal end and a gate end, and a floating air pocket arm having a floating air pocket end and a distal end. Wherein, the distal end of the said floating air pocket arm is placed perpendicularly against the said distal end of the said water channel gate arm and provides an interlocking mechanism. The said interlocking mechanical assembly also comprises an operating element adapted for providing a push force to an elongated connecting arm, wherein the said elongated connecting arm provides a push force to unlock the said interlocking mechanical assembly.

The present invention provides a leakage proof, water saving flushing device for effectively managing water resources through an interlocking mechanical assembly. The said interlocking mechanical assembly is made up from a water channel gate arm having a distal end and a gate end, and a floating air pocket arm having a floating air pocket end and a distal end. Wherein, the distal end of the said floating air pocket arm is placed perpendicularly against the said distal end of the said water channel gate arm and provides an interlocking mechanism. The said interlocking mechanical assembly also comprises an operating element adapted for providing a push force to an elongated connecting arm, wherein the said elongated connecting arm provides a push force to unlock the said interlocking mechanical assembly.

This invention eliminates the wastage of water from the toilet flushing systems and also solves the problems that commonly exist in the toilet systems today. It uses a leak trap system that shuts down incoming water in case of a leak in the flushing system. It provides a simple and cost effective solution.

The utility model discloses a light-emitting rotary knob. The light-emitting rotary knob comprises a rotary knob body, a connecting base and a PCB, wherein a plurality of LED light-emitting bodies are mounted on the PCB, a connecting concave hole is formed in one end of the connecting base, the rotary knob body is provided with a concave cavity and connected with the connecting base in a sleeving mode through the other end of the connecting base by means of the concave cavity, the PCB is mounted on the connecting base, and the multiple LED light-emitting bodies guide out light through the rotary knob body. Preferably, the connecting base comprises a cylindrical body, a protruding part extends out from the middle of one end of the cylindrical body, the connecting concave hole extends into the cylindrical body from the end face of the protruding part, a through hole is formed in the middle of the PCB, the protruding part is sleeved with the PCB through the middle through hole, the multiple LED light-emitting bodies are distributed around the through hole, and the cylindrical body is located in the concave cavity. The light-emitting rotary knob of the utility model has a good prompt effect, correct operation can be ensured, and the grade of a flushing toilet cover can be improved easily.

A toilet flush lever assembly is provided, including: a handle member, including an operation member and a shaft connected with each other, the shaft being configured to be rotatably mounted to a water tank; a connection member, being movable and connected with the shaft, including a sleeve portion which is slit to include at least one first slit; a driving member, including a ball joint and a rod member connected with each other, the sleeve portion being disposed around the ball joint; an urging member, sleeved with and radially urging the sleeve portion to restrain the ball joint.

A toilet flush lever assembly is provided, including: a handle member, including an operation member and a shaft connected with each other, the shaft being configured to be rotatably mounted to a water tank; a connection member, being movable and connected with the shaft, including a sleeve portion which is slit to include at least one first slit; a driving member, including a ball joint and a rod member connected with each other, the sleeve portion being disposed around the ball joint; an urging member, sleeved with and radially urging the sleeve portion to restrain the ball joint.

A system (1) comprises a radiation body (10), a radiation arrangement (20) configured to provide radiation at least comprising UV radiation (23) to the radiation body (10), a detector arrangement (30) configured to detect an internal radiation intensity of radiation (25) in the radiation body (10) at at least one detector position, and a controller arrangement (40) configured to control the radiation arrangement (20) in dependence on input from the detector arrangement (30). When the input from the detector arrangement (30) indicates a change of the internal radiation intensity that can be assumed to follow from an event of touch on a radiation exit window (11) of the radiation body (10), an action of temporarily changing a state of at least one UV radiation source (21) of the radiation arrangement (20) from a maintenance state to a disinfecting state of increased intensity of the UV radiation (23) is performed.

A drainage control device includes a main body, an upper cover, a lower cover, a pressure relief cover, a membrane, and a return member. The main body has a water filling trough, a drainage trough, and a water passage trough. A drainage chamber having a drainage port is defined between the upper cover and the drainage trough. A water filling chamber has a water filling port is defined between the lower cover and the water filling trough. The pressure relief cover and the main body hold a periphery of the membrane. A water passage chamber is defined between the membrane and the water passage trough. A back-pressure chamber having a drain port is defined between the membrane and the pressure relief cover. The membrane is configured to open or close a junction of the water passage chamber and the drainage chamber. The membrane is returned by the return member.