A regulator valve assembly for a compressed fluid source may comprise a valve housing defining a main fluid channel, a secondary fluid channel, a primary outlet, a primary inlet, and a secondary inlet. A poppet may be located in the main fluid channel, The poppet may define a poppet channel and a poppet outlet. The poppet channel may be fluidly connected to the secondary inlet. A rod may be configured to translate in and out the poppet outlet. A pin may be biased toward the secondary fluid channel. The pin may be configured to translate into a translation path of the rod. A solenoid valve may be configured to control a flow of fluid into the secondary fluid channel.

A bypass flow valve is provided. The bypass flow valve includes a valve piston and a first annulus disposed on a first end of the valve piston. The first annulus has an inlet and an outlet and surrounds a first valve sleeve. The first valve sleeve contains an arrangement of a first plurality of ports providing fluid communication to the valve piston. The arrangement of the first plurality of ports includes a first region of the first valve sleeve in line with the inlet of the first annulus and a second region of the first valve sleeve in line with the outlet of the first annulus. The second region has fewer ports than the first region.

An electropneumatic proportional flow control device improves electropneumatic control of pneumatically operated valves. Improved turn down ratios in regards to the electromagnetic response of the device to a supplied control voltage is achieved using two variable spring devices, one linear, as part of the pressure regulator valve component, and the other non-linear, as part of the proportional valve component and which are magnetically responsive to different magnetic forces. The use of both the linear and non-linear springs together results in an increased turndown-ratio, especially during initial valve control.

A bypass flow valve is provided. The bypass flow valve includes a valve piston and a first annulus disposed on a first end of the valve piston. The first annulus has an inlet and an outlet and surrounds a first valve sleeve. The first valve sleeve contains an arrangement of a first plurality of ports providing fluid communication to the valve piston. The arrangement of the first plurality of ports includes a first region of the first valve sleeve in line with the inlet of the first annulus and a second region of the first valve sleeve in line with the outlet of the first annulus. The second region has fewer ports than the first region.

A passive, modulating flow control valve including a poppet having a precisely designed and constant unbalanced area. A spring rate is selected to achieve the desired poppet travel over the desired range of differential pressure. Preferably, the spring preload is selected such that the poppet will remain fully open until a specified minimum differential pressure is reached. The unbalanced area and spring force allow the poppet to reposition proportional to the differential pressure throughout the design range of differential pressure. An array of radial holes in the poppet are used to define the trim characteristics. As the poppet is pushed closed by the differential pressure, few radial holes remain uncovered, which increases the flow resistance. The single modulating poppet includes flow and trim characteristics that respond directly to differential pressure acting on it to achieve tight control of the mass flow rate.

A method for producing a nonlinear cylindrical spring produced by winding or coiling a spring wire having wire diameters varying over its length, and formed from a blank with a constant diameter. A drum roller shapes the blank and, between the outer lateral surface of an inner rotor driven in rotation about a central longitudinal axis and the inner lateral surface of a drum concentric with the rotor, has an annular gap which tapers continuously from an input side to an output side, the clear opening width of which, viewed in the radial direction, is greater than the diameter of the blank on the input side and equal to or smaller than the minimum wire diameter of the spring wire on the output side, and the blank is shaped by moving it into the annular gap from the input side to the output side.

A pressure reducing valve of an air damping system of motor vehicle chassis makes available a constant output pressure when the input pressure varies. The pressure reducing valve has a housing with a general longitudinal axis, at least one fluid input opening and at least one axial fluid passage opening. In the housing a valve piston with a valve body is mounted displaceably which forms a seat valve with the axial fluid passage opening. An elastic diaphragm arranged stationarily in the housing is coupled to the valve piston and forms two axially active differential pressure areas. A pressure return passage penetrates the valve piston and guides an output pressure present downstream of the seat valve onto the elastic diaphragm.

A device for controlling a fluid mass flow for a device for compressing a gaseous fluid from a low to a high pressure level. The device has a housing with fluid connections at different pressure levels, and a closure element arranged to move in a translatory manner within the housing along a longitudinal axis, with effective surfaces assigned to the fluid connections. The closure element regulates a flow cross-section of a flow path extending between a first and a second fluid connection. The device has a receiving element for receiving the closure element. A primary segment is arranged to be completely surrounded by the receiving element as a first section of the closure element and a secondary segment is arranged to be completely surrounded by the housing as a second section of the closure element and the receiving element is arranged to be completely surrounded by the housing.

A machine for preparing coffee, including a brewing chamber; a water supply for supplying a flow of water to the brewing chamber; and an adaptive flow control device for the flow of water, positioned in series with the water supply and the brewing chamber.

A fluid regulating unit includes a body, a pressure regulator, and a control valve. The body has an inlet, an outlet configured to output a regulated flow of fluid, and a flow path defined between the inlet and the outlet. The body integrates a pressure regulator and a control valve, each of which is disposed in the flow path. The pressure regulator has a regulator body, a control assembly configured to control a fluid flow through the regulator body, a sensor operatively coupled to the control assembly to control a position of the control element, and a bonnet movably coupled to the regulator body. The regulator body and the bonnet define a reference chamber disposed in the flow path. The reference chamber is configured to apply a reference force to the sensor to control the fluid flow through the regulator body.