Delivery device of a water jet with safety valve

A delivery device of a water jet, comprising a delivery head defining a delivery chamber, where said head comprises:

• an inlet fitting suitable for connecting fluidically a water supply line with the delivery chamber, and a delivery plate having an inner side and a center, wherein are obtained a plurality of water delivery nozzles present in the delivery chamber, wherein a safety valve is fixed to said delivery plate suitable for reducing water pressure in the delivery chamber when the water pressure exceeds a preset pressure threshold, said safety valve comprising:
• a hollow housing body which passes through and is integral with the delivery plate, wherein said hollow housing body is in fluidic communication with the delivery chamber through an inner body opening and is open to the exterior of the delivery device through an outer body opening facing in a direction of delivery of the water by the plurality of delivery nozzles;
• a valve cartridge inserted into the hollow housing body, the cartridge defining a valve seat for the passage of water from the inner body opening to the outer body opening and comprising an obturator movable between a closed position, wherein the obturator closes said valve seat, and an open position, wherein the obturator opens said valve seat when a pressure greater than the preset pressure threshold value acts on said obturator;
• and
• a support body connected in a removable way to the outer body opening of the hollow housing body, said support body having a bottom wall on which the valve cartridge rests and said support body having through-openings for evacuation of the water present in the hollow housing body to the exterior;
• wherein the support body comprises a threaded side wall suitable for screwing into the hollow housing body, and a base having a diameter larger than the outer diameter of a wall of the hollow housing body delimiting the outer body opening.