An improved backflow assembly apparatus is contemplated. The apparatus having a backflow assembly, the backflow assembly having a body, an inlet, a first valve control assembly connecting the inlet to the body, an outlet, and a second valve control assembly connecting the outlet to the body, and a flushing system connected to the body of the backflow assembly, the flushing system having an access lid for connecting directly to the body, a relief valve connected to the access lid, and a flushing hose attached to the relief valve.

A test cock for determining an operating condition of a backflow prevention system includes a body portion having a distal end and a proximal end and a space defined within the body portion. A distal opening is provided on the body portion at the distal end and a proximal opening is provided on the body portion at the proximal end and the proximal opening is in fluid connection with the body portion space. A body portion fitting is disposed in the body portion and is providing a fluid connection with the body portion space. A fluid sensor is coupled to the body portion fitting and is in fluid connection with the body portion space. A rotating system fitting has a first end and a second end where the second end is provided in the body portion proximal opening.

A connection socket is adapted for a sanitary fitting with a floor-standing faucet column and has a socket bottom body and a removably attached socket top. A bottom body fluid channel has a bottom body inlet and a bottom body outlet. The socket top has a top-side connection surface for the faucet column and a top fluid channel with a top inlet in fluid communication with the bottom body outlet. A sound absorber element in the bottom body fluid channel is insertable and extractable via the bottom body outlet and/or a backflow preventer element in the top fluid channel is insertable and extractable via the top outlet. The socket top can be turnable on the socket bottom body between the operating position and a blocking position in which fluid communication is blocked.

The invention relates to a recessed hollow profile for mounting to a wall system in a wall of a building, which allows ventilation with efficient decentralised energy recovery. The invention also relates to a system for ventilating a room.

The two Remote Back-flow Detection and Shut-off Systems that are developed by this patent narrows the possible 12 month time span for contaminating back-flow by detecting and shutting off the back-flow while not changing the current installation or inspection methods of the double check valve assembly.

A sanitary equipment with a water supply system, a water route system, and a hand washing table are provided. The sanitary equipment includes a machine having a machine water outlet; a movable hand washing table pivoted on the machine and located below the machine water outlet, the movable hand washing table being capable of opening or retracting with respect to the machine; and a water route system disposed in the machine and connected to the machine water outlet to discharge potable water and non-potable water from the machine water outlet.

A shower system includes a water supply conduit, a reservoir, and a valve actuator. The reservoir is fixedly coupled to the water supply conduit such that the reservoir and the water supply conduit are fluidly coupled. The valve actuator is configured for actuation between a first position in which water is supplied from the water supply conduit and a second position in which water is supplied from the reservoir. In some implementations, the shower system further includes a showerhead that is fluidly coupled to the water supply conduit and the reservoir such that water may be supplied from either the water supply conduit to the showerhead or from the reservoir to the showerhead.

A pressure reducer for a system separator includes a seal element accommodated in a groove, which is subject on a first side to a pressure prevailing at an inlet-side connection stub of the system separator and on a second side to a pressure prevailing in an inlet chamber of the system separator. At least one recess is introduced into a wall delimiting the groove on the first side, into which recess the seal element partially enters, canceling out its sealing effect, when the pressure prevailing at the inlet-side connection stub falls below the pressure prevailing in the inlet chamber.

A holder including a holding body configured for displaceable attachment to a rod and including a rod passage opening for the rod, and a clamping unit movable between a clamp position and an enable position. The clamping unit, in case of the holding body attached to the rod, in the enable position is capable of enabling a shifting movement of the holding body along the rod and in the clamp position is capable of exerting a clamping force to block a shifting movement of the holding body along the rod. An operating unit is provided for user-operated moving of the clamping unit between the clamp position and the enable position. The clamping unit is a wrap spring unit wrapping around the rod passage opening and comprising a plurality of wrap springs disposed adjacent to each other in a longitudinal axis direction of the rod passage opening, each spring wrapping around the rod passage opening over more than 180, and/or a wrap spring wrapping around the rod passage opening over more than 360, wherein the respective wrap spring is movable by the operating unit between a constricting condition providing the clamp position of the clamping unit and an enlarging condition providing the enable position of the clamping unit.

A valve assembly with a spring retention assembly including an elongated cylinder portion having an open threaded end and a closed end and an elongated piston portion having a free end and a threaded tab end configured to thread through the open threaded end and, thereby, be slideably captured in the cylinder portion. A spring couples to the body portion and the piston portion to provide a force to urge the body portion and the piston away from one another, wherein the closed end and the free end are similarly shaped so that the spring retention assembly can be reversibly mounted to a valve member that can also be reversibly mounted.