In a flow regulator (1) having a regulating body (3) and a regulating profile (8), which therebetween configure a regulating gap (11), the available width or opening cross section of said regulating gap (11) being variable by pressure, it is provided that regulating protrusions (9) are disposed such that neighboring regulating protrusions (9) therebetween enclose dissimilar spacings (10, 13).

A flow and pressure stabilization device includes a housing; a first fluid chamber; a gas chamber; a deformable bladder that separates the first fluid chamber from the gas chamber, the deformable bladder comprising a longitudinally protruding portion shaped such that, when a pressure in the gas chamber is greater than a pressure in the first fluid chamber, the longitudinally protruding portion extends toward the first fluid chamber; and a valve in fluid communication with a fluid outlet, the valve including: a second fluid chamber in fluid communication with the first fluid chamber; a fluid port in fluid communication with the fluid outlet; and a deformable diaphragm positioned adjacent to and biased toward the fluid port.

A pressure independent control valve (10) for controlling the flow of a liquid medium includes a valve body having a side wall defining a conduit that extends from an inlet to an outlet. The side wall of the valve body include a first side opening (23) and a second side opening (24) extending into the conduit. A first insert element (21) is placed into the first side opening (23) and a second insert element (22) is placed into the second side opening (24). At least part of a pressure control device (18) is accommodated by said first insert element (21), and at least part of a flow rate adjustment device (19) is accommodated by said second insert element (22).

A control valve including: a valve body, a flow shutter operatively interposed between an inlet and an outlet, a driving spindle having at least a first actuating end and a second end connected to the flow shutter. The valve also includes a differential pressure automatic regulation device, comprising: a cup-shaped body arranged around the driving spindle and axially mobile with respect to said driving spindle; a spring operatively interposed between the valve body and the cup-shaped body to push the latter away from the flow shutter; a rolling membrane having a radially inner edge fixed to the cup-shaped body and a radially outer edge fixed to the valve body to delimit a first chamber in fluid communication with the inlet and a second chamber in fluid communication with the outlet.

A flow and pressure stabilization device comprises a housing; a first fluid chamber; a gas chamber; a deformable bladder that separates the first fluid chamber from the gas chamber and at least partially defines a volume of the first fluid chamber; a second fluid chamber in fluid communication with the first fluid chamber via a fluid passage; and a variable flow valve in fluid communication with the second fluid chamber, the variable flow valve comprising: a fluid port in fluid communication with a fluid outlet; a deformable diaphragm positioned adjacent the fluid port, the diaphragm at least partially defining a volume of the second fluid chamber; and an outflow control button coupled to the diaphragm and extending at least partially into the fluid port, the outflow control button comprising an at least partially tapered surface.

Various embodiments include a control valve comprising a first valve assembly between an inlet and an outlet. The first valve assembly comprises: a valve seat fixed relative to the valve body with an opening in a sidewall; a slider rotating inside the valve seat to block the opening, but stationary in an axial direction; a regulating valve plug with an opening at one end, surrounding the valve seat and movable in the axial direction to block the opening in the sidewall of the valve seat; and a first valve stem connected to the slider and to the regulating valve plug, the first valve stem having one end extending out of the valve body. A first overlap between the slider and the opening and a second overlap of the plug and the opening are changed by movement of the first valve stem.

A dispensing system includes a container for a fluid substance having a hollow stem and dispensing means for feeding the pressurised substance thereto. A cap includes a base body including a first seat for coupling to the stem, the base body partially defining a conduit presenting a first end in fluid communication with the seat and a second end coupled with a spray nozzle. A pressure regulator regulates passage of the substance according to the pressure in the stem to reduce passage due to an increase in pressure in the cavity and increase the passage otherwise, in order to maintain an essentially constant pressure downstream of the regulator even in the presence of variable upstream pressure. A valve element on the conduit between the regulator and the nozzle may close the conduit when the pressure present inside the latter is below a predetermined threshold and open the conduit otherwise.

A flow and pressure stabilization device comprises a housing; a first fluid chamber; a gas chamber; a deformable bladder that separates the first fluid chamber from the gas chamber and at least partially defines a volume of the first fluid chamber; a second fluid chamber in fluid communication with the first fluid chamber via a fluid passage; and a variable flow valve in fluid communication with the second fluid chamber, the variable flow valve comprising: a fluid port in fluid communication with a fluid outlet; a deformable diaphragm positioned adjacent the fluid port, the diaphragm at least partially defining a volume of the second fluid chamber; and an outflow control button coupled to the diaphragm and extending at least partially into the fluid port, the outflow control button comprising an at least partially tapered surface.

A valve includes an inlet unit including an inlet hole into which a fluid is introduced, a pressure adjusting unit which adjusts a pressure of the fluid introduced through the inlet unit, and a discharging unit having an opening and closing member which selectively discharges the fluid which had its pressure adjusted, and a water outlet hole which discharges the fluid passing through the opening and closing member to the outside, wherein a cross-sectional area of the inlet hole is greater than a cross-sectional area of the water outlet hole and a flow direction of a fluid from the pressure adjusting unit to the opening and closing member and a flow direction of a fluid from the opening and closing member to the water outlet hole are perpendicular to each other.

A valve seat assembly for use in a fluid control valve. The valve seat assembly includes a pad holder and a support ring. The pad holder includes a support body configured to support a seat pad and a plurality of alignment struts projecting radially outwardly from the support body. The support ring extends around the radially outer perimeter of the alignment struts. The pad holder slides into and out of an operative position in the support ring.