A ventilation flow rate regulator for a pressurised tank of a vehicle. The regulator includes a body including a gas inlet and a gas outlet, and at least one restrictor mounted movably relative to the body. The restrictor is mounted to reduce a cross-section of at least one path of a gas flow proceeding from the inlet to the outlet, when a flow rate at the inlet is greater than a predetermined threshold. The regulator is arranged so that the cross-section remains non-zero irrespective of a flow rate.

A flow rate regulator (1) having a regulator housing (2), wherein said regulator housing (2) has an outer circumferential edge region (5) that can be placed on an end circumferential edge region (3) of a jet regulator (6) and/or of a sieve (11) and including a central annular gap (12), in which an annular throttle body (13) made of elastic material is present, bounding a control gap (15) between same and an inner and/or outer circumferential wall (14) of the annular gap (12) having a control profile, wherein the open flow-through cross-section of said control gap is changeable under the pressure of the flowing water. The flow rate regulator (1) according to the invention is characterized in that said regulator has a shell-shaped regulator housing (2), the outer circumferential edge region (5) of which is designed as a radially outwardly protruding ring flange, and in that the inner shell chamber (18) of the regulator housing (2) open to the outlet side is dimensioned for receiving a sub-region of the sieve (11) protruding past the end circumferential edge region (3) of the jet regulator (6).

A pneumatic controller for connecting to a vacuum source and providing a vacuum output signal. The pneumatic controller includes a valve body defining a number of different chambers. At least two of the chambers that are separated by diaphragm and one of these chambers is maintained at vacuum pressure. In response to a pressure differential between the two chambers, the diaphragm deforms causing a valve to move from a first position, where an output port is coupled to atmospheric pressure, to a second position, where the output port is coupled to vacuum pressure. The valve is inhibited for moving between the first and second positions unless a sufficient vacuum pressure is present. Movement of the valve from the second position to the first position is also delayed until the two chambers are substantially equalized.

A check valve, including a valve and a valve support surface, to permit a fluid to move through the check valve in a first direction and resist a fluid flow through the valve in a second direction, the valve having a valve diaphragm and an isolating bridge, with a portion of the valve engaging against valve support surface to resist deformation or stretching of the valve when a backflow of fluid into the check valve occurs. The valve support surface having a first support surface and a second support surface, and the valve positioned with the valve diaphragm spaced apart from the first support surface, and the isolating bridge spaced apart from the second support surface.

An excess flow and thermal valve assembly includes a valve housing, a valve carried in the housing and displaceable during excess flow conditions to reduce flow of fluid through the assembly, and an intumescent or intumescent material carried in the valve housing and expandable during excess temperature conditions to reduce flow of fluid through the assembly.

A jet regulator (1) is provided including a jet regulator housing having an interior in which there is provided a perforated plate (5) with a plurality of throughflow holes (6) for dividing up the water that flows through, of which at least one of the throughflow holes (6), at least in an outflow-side hole portion, widens in a tapered or conical or stepped manner toward an outflow side. On the outflow side of the perforated plate (5) and at a distance therefrom, there is provided an encircling impingement chamfer (19) which narrows a clear housing cross section in a region of the impingement chamfer progressively in the flow direction.

A two-way flow control valve includes a valve body, a control member, a cover mounted and a gasket. The valve body has a first water hole, a plurality of first ribs and a plurality of first flanges. The cover has a second water hole, a plurality of second ribs and a plurality of second flanges. The control member has a passage. The control member is provided with two V-shaped inclined planes which are clamped respectively by the first flanges of the valve body and the second flanges of the cover. When the water passing through the two-way flow control valve is large enough to reach a determined value, the control member is stretched and deformed to reduce the diameter of the passage, and to partially block the first water hole of the valve body or the second water hole of the cover.

A flow control valve includes a valve body with inlet and outlet ports, and an intermediate chamber therebetween. The valve further includes a static flow rate regulator for the fluid, accessible from outside the valve body and adapted to vary the cross-section of a passage orifice between the inlet and the outlet of the valve. The valve further includes a dynamic flow rate balancer, regulating flow rate based on a change of the incoming flow rate. The flow rate balancer includes a perforated element interposed between the inlet port and the intermediate chamber, allowing fluid passage only through at least one opening of the perforated element and an elastic element at one face of the perforated element facing the inlet port of the fluid into the valve body. An increase in the inlet/outlet differential pressure corresponds to an enlargement of the elastic element, guaranteeing a constant flow rate.

A check valve, including a valve and a valve support surface, to permit a fluid to move through the check valve in a first direction and resist a fluid flow through the valve in a second direction, the valve having a valve diaphragm and an isolating bridge, with a portion of the valve engaging against valve support surface to resist deformation or stretching of the valve when a backflow of fluid into the check valve occurs. The valve support surface having a first surface portion and a second surface portion, and the valve positioned with the valve diaphragm spaced apart from the first surface portion, and the isolating bridge spaced apart from the second surface portion.

A pneumatic controller for connecting to a vacuum source and providing a vacuum output signal. The pneumatic controller includes a valve body defining a number of different chambers. At least two of the chambers that are separated by diaphragm and one of these chambers is maintained at vacuum pressure. In response to a pressure differential between the two chambers, the diaphragm deforms causing a valve to move from a first position, where an output port is coupled to atmospheric pressure, to a second position, where the output port is coupled to vacuum pressure. The valve is inhibited for moving between the first and second positions unless a sufficient vacuum pressure is present. Movement of the valve from the second position to the first position is also delayed until the two chambers are substantially equalized.