Abstract: The invention relates to a discharge nozzle for the discharge valve of a whirlpool tube having a water inlet duct and an air inlet duct, in which the water stream and air stream are mixed together as the result of an injector effect. In order to improve the hydropneumatic massaging effect, the water inlet duct is disposed axially and centrally with respect to the inner surface of an outer disk-shaped distribution element and is open to a radially outwardly leading circular discharge duct formed between the outer distribution element and an inner disk-shaped distribution element. The air inlet duct discharges air into a ring interstice defined between the inner distribution element and the tub wall or the valve body or valve housing of the discharge valve.

Abstract: The invention relates to a cleaning device for a piping system of a whirlpool tub where one or more outlet valves supply water and/or air into the interior of the tub. The outlet valves branch off from a cleaning-fluid circulation system using a delivery pump to circulate the cleaning fluid. When the cleaning fluid is circulated the outlet valves are in a closed position, receiving a flow of the cleaning fluid, but preventing the issuance of the cleaning fluid into the tub interior. The outlet valve has a water-supply line connecting into a water-distribution chamber disposed in a valve body, from which a water-outlet channel branches toward the tub interior. The water-outlet channel guides, in a watertight and axially movable manner, a sealing member passing through the water-distribution chamber.