Abstract: A priming-water conduit from a sink water faucet unit to a floor drain p-trap is located between the faucet valve and the faucet water-outlet. The faucet valve controls water flow into said conduit, and, therefore, into said p-trap, without any other valve or control system. The priming-water conduit may be attached, and in fluid communication with, various structures of the faucet that are downstream of the faucet valve(s), such as: the mixing chamber of a mixing faucet; the water line from the mixing chamber to the faucet outlet/nozzle; or any water-containing structure that is downstream of the faucet valve. Each time the faucet is turned on, by means of the manual faucet valve, a portion of the water passing from the valve to the mixing chamber and/or by other routes to the faucet outlet/nozzle, will flow into the priming-water conduit and to the p-trap.

Abstract: An apparatus for preventing water leak damage from a bath fixture, the apparatus comprising a first side wall, a second side wall, a first end wall, a second end wall, a top wall, a bottom wall sloping downwardly to an outlet wherein the first and second side walls, the first and second end walls, the top wall, and the bottom wall define a compartment therebetween and wherein the water source pipes of the bath fixture extend upwardly through the bottom wall. The apparatus further includes a waterproof covering that covers the entire inside surfaces of the compartment, and a drain element that connect the outlet of the bottom wall to a drain pipe of the bath fixture. The apparatus may also include at least one removable panel to provide access to water source pipes disposed within the compartment.

Abstract: A stopper for selectively blocking a drain to the passage of water. The drain has an inlet, an outlet and a substantially cylindrical throat between the inlet and outlet. A control means is provided for selectively feeding control fluid under hydraulic pressure to the cylindrical throat whereupon an expandable bladder located within the cylindrical throat selectively expands in fluid communication with the control fluid to block the drain and thus act as a stopper.