A shower jet generating device for a sanitary shower head has a jet disk that delimits a fluid chamber on the outlet side and has at least one jet disk opening. A fluid outlet element is disposed on the at least one jet disk opening and is movable in an axial main direction component, which element includes a movable valve body having a fluid outlet opening issuing from the fluid chamber. The fluid outlet opening is unblocked in an unblocking position of the fluid outlet element and is blocked in a blocking position of the fluid outlet element in response to a fluid pressure in the fluid chamber. The movable valve body cooperates with an unmovable valve seat which unblocks the fluid outlet opening in the unblocking position of the fluid outlet element and blocks it in a blocking position of the fluid outlet element.

A nozzle opening and closing device for electrolyte injection comprises a nozzle having a discharge outlet for injecting an electrolyte into a battery assembly. The nozzle opening and closing device for electrolyte injection further comprises an opening and closing plate rotatably mounted on the nozzle, and provided to open or close the discharge outlet of the nozzle, and an opening and closing control part provided to control whether the opening and closing plate is opened or closed based on the weight of the electrolyte applied to the opening and closing plate.

An agricultural sprayer having a liquid supply conduit for directing selectively controllable pressurized liquid to a plurality of spray nozzle assemblies. Each nozzle assembly includes a nozzle body having a respective orifice member having an inwardly tapered conical section communicating with a smaller diameter discharge orifice. Each respective orifice member is made of a resilient and pressure responsive deformable material such that upon an increase in the pressure of the liquid supply said liquid flow passage and discharge orifice thereof can be altered to increase the rate through said orifice member and nozzle body by at least 75 percent and upon interruption of the supply of pressurized liquid to the orifice member the orifice member liquid flow passage and discharge orifice return to their original shape.

The invention relates to a spray head comprising a spray head base body (2) and a nozzle plate (3), the spray head base body (2) comprising at least one liquid channel (4) for providing a liquid flow towards the nozzle plate (3), wherein a drip-stop element (10) is located between the spray head base body (2) and the nozzle plate (3), said drip-stop element (10) comprising at least one opening (11) being fluidly coupled with said liquid channel (4) for providing a fluid flow into a space (6) between the drip-stop element (10) and the nozzle plate (3), wherein at least a top portion (12) of said drip-stop element (10) is movably mounted within a spray head chamber (5) in order to perform a stroke movement, wherein said top portion (12) is preloaded such that the top portion (12) rests against the nozzle plate (3) without applying any external forces to the top portion (12) and said top portion (12) is lifted off the nozzle plate (3) in case that a liquid flow is provided through the liquid channel (4) into the space (6) between said top portion (12) and the nozzle plate (3).

A multi-cone, multi-stage spray nozzle includes a nozzle body, a valve stem with a first valve head, and a second valve head attached to the first valve head. The first valve stem is biased into a closed position against a valve seat of the nozzle body by a bias device. The second valve head is continuously open. Upon the application of a first fluid pressure, which is less than a threshold fluid pressure, the bias device maintains the valve stem in the closed position while the second valve head is continuously open. And upon the application of a second fluid pressure, which is at least as great as the threshold fluid pressure, the valve stem moves to an open position while the second valve head remains continuously open.

A multi-cone, multi-stage spray nozzle includes a nozzle body and outer and inner valve stems. The nozzle body defines an outer valve seat disposed at its distal end. The outer valve stem is slidably disposed in the nozzle body. The inner valve stem is slidably disposed in the outer valve stem. The inner valve stem occupies an open position and the outer valve stem occupies a closed position upon the application of a first pressure on the distal ends of the inner and outer valve stems. And, the inner and outer valve stems both occupy open positions upon the application of a second pressure that is greater than the first pressure on the distal ends of the inner and outer valve stems.

A spout nozzle for a scum removal device provided in water where scum floats: a tip-end-side nozzle part of a nozzle body is formed in a flat cylindrical shape; a valve body closing a discharging opening by its own weight when pressure water is not supplied is provided in the tip-end-side nozzle part; a closing part closing an opening above the discharging opening when the discharging opening is closed is provided on the valve body; therefore, resistance is small even if it is arranged in water and moreover an interior is hardly stained by scum and the like contained in water.

A water jet device for recreational purposes, in particular a fountain, having: a jet head with at least one water infeed opening and at least one set of water outlet nozzles, the nozzles being arranged in a same plane and on a peripheral line of the jet head, the nozzles including respective outlets oriented towards the outside of the jet head, a water flow regulator supplying the nozzles to produce a water velocity defining a water jet, exiting each nozzle, having a selected substantially parabolic-shaped path, the water jets exiting the nozzles forming at least one dome portion, and at least one water supply column made of a rigid material and including an inlet connected to a water infeed and a water outlet connected to the opening of the jet head and mechanically integral thereto, the supply column having the selected parabolic shape to blend with the dome portion.

In one general aspect, a flow control valve includes: a housing including a tubular wall surrounding an interior passage, and a flow control section in which the tubular wall includes a conical inner wall surface; a protrusion disposed on an exterior surface of the tubular wall at the flow control section; a sealing member disposed in the housing and configured to be selectively moved to a sealing position in which the sealing member engages the conical inner wall surface to restrict flow of a fluid through the interior passage; and a recess disposed the conical inner wall surface and configured to allow the fluid to flow past the sealing member through the recess when the sealing member is in the sealing position, wherein the recess and the protrusion are radially aligned on the tubular wall.

A valve assembly for sequential, transitory high-pressure spraying in a pipeline conveying pressurized liquid in which the pressurized liquid drives a spray valve into a momentary open position to enable a transitory spray of pressurized liquid and then open an outlet valve to enable throughput of the pressurized liquid to the next valve assembly deployed in the pressurized pipeline.