In accordance with at least one aspect of this disclosure, a flow control device can include, a first plate having one or more windows defining a flow path therethrough, a second plate configured to abut the first plate, and an actuator operatively connected to one or more of the first plate and/or the second plate. The actuator can be configured to drive the first plate and/or the second plate relative to one another to enlarge or reduce the flow path through the one or more windows in the first plate.

A spool and sleeve assembly for a metering valve comprises a spool body defining a center axis, and a sleeve body having a bore that receives the spool body. The sleeve body includes at least one metering window open to the bore and is moveable between a metering position to control flow through the metering window and a shutoff position where flow is prevented from exiting an outlet end of the bore. A seal assembly reacts between the spool body and the sleeve body to provide at least a first sealing interface and a second sealing interface axially spaced from the first sealing interface when the spool body is in the shutoff position. A metering valve for a fuel system is also disclosed.

A bleed air pressure regulation system for an aircraft anti-icing system comprises a first, upstream pressure regulating valve and a second, downstream pressure regulating valve arranged in series in a bleed airflow path. The respective pressure regulating valves each have a regulating pressure chamber in fluid communication with a respective pressure setting valve. Each pressure setting valve is in fluid communication with a bleed air inlet upstream of the first, upstream pressure regulating valve. The first, upstream pressure regulating valve is set to regulate the pressure of the bleed air to a first pressure and the second, downstream pressure regulating valve is set to regulate the pressure of the bleed air to a second pressure which is higher than the first pressure.

A solenoid valve includes a main valve that controls a flow rate of a working fluid, a sleeve in which the main valve is slidably inserted, and a solenoid unit that displaces the main valve. The sleeve includes a slide support and a large-diameter portion. The main valve is slidably supported by the slide support. The large-diameter portion is closer to an open end of the insertion hole than the slide support is, and has a diameter larger than an outer diameter of the slide support. The sleeve is fixed inside the insertion hole by causing the large-diameter portion to be pushed against the valve block by the solenoid unit.

A cage valve, flow trim components, and method for signalling erosion of flow trim. The valve is of the type having flow trim arranged across an inlet bore and aligned with an outlet bore, and including a stationary tubular cage and an internal or external flow control member such as a plug or flow collar slidable along the side wall of the cage to cover or uncover flow ports in the side wall. The flow control member includes an end plate which closes an upstream end of the cage. A cavity is formed in the flow control member upstream of the end plate. A transmitter, such as a proximity beacon, positioned in the cavity transmits a first signal indicative of intact flow trim when no fluid is in the beacon cavity and transmits a zero value signal or no signal indicative of eroded flow trim when fluid enters the cavity.

A spool assembly is disclosed for use in a valve. The spool assembly may have a cylindrical body with a first end, a second end, and a bore passing from the first end through the second end. The spool assembly may also have a first insert with a first land slidably disposed inside the bore at the first end, and a second insert separate from the first insert. The second insert may have a second land slidably disposed inside the bore at the second end.

An anti-freeze faucet contains: a first pipe, a second pipe, a check valve, and a control valve. The first pipe includes a hollow portion, an orifice, an outlet, and an inflow segment having two inlets. The second inserts into the hollow portion and includes a first connection segment, a second connection segment, and an air conduit, wherein the first connection segment has an air hole. The check valve is accommodated in the inflow segment and corresponding to the two inlets. The control valve is housed in the hollow portion and includes a base, a fitting bushing, and a coupling holder, wherein the base has two channels, and between the base and the fitting bushing is defined an accommodation chamber, the coupling holder has a rotation disc with a cold-water vent and a hot-water vent, and the coupling holder has multiple first openings and multiple second openings.

The present invention relates to a valve to be used when blowing air into squeezing pads from a high pressure blower such as a side duct blower, said valve comprising a valve chamber comprising a primary set of openings with a first opening connected to said high pressure blower and a second opening connected to said squeezing pads, whereby air can be transferred through said valve chamber between said squeezing pads and said high pressure blower, said valve chamber further comprising a third opening, whereby air from said first opening can pass through said third opening, and where air not passing through said third opening passes through said second opening, said valve further comprising a valve spool for blocking said third opening and thereby changing the amount of air passing through said third opening. The valve spool for blocking said third opening comprises a limiter element, wherein said limiter element and/or said third opening has a varying diameter along its longitudinal axis, where the limiter element is adapted to be inserted along its longitudinal axis in said third opening, and where the extent of insertion of said limiter element changes the amount of air passing through said third opening. The invention further relates to a lift head with the above valve.

The invention relates to a process for a control valve having a valve seat and a throttle element, which throttle element has a sealing edge for sealing the valve seat, and furthermore a first opening area and a second opening area, which throttle element can furthermore be positioned relative to the valve seat by a positioning motion such that the first opening area will be effective in a first opening position thereof and/or the second opening area will be effective in a second opening position thereof, characterized in that a sealing element is arranged on the throttle element and/or the valve seat such that the throttle element will pass over a sealing position as it transitions from the first opening position to the second opening position, in which sealing position the first opening area will be effective and the second opening range will not be effective.

Anti-rotation assemblies for use with fluid valves are disclosed. An example apparatus includes a retainer collar coupled at an end of a plug, the plug including a plug collar around which the retainer collar is disposed, the plug and the retainer collar being substantially flush at an interface between the plug and the retainer collar, a fastener extending transversely through the retainer collar and the plug collar to couple the retainer collar at the end of the plug, when the retainer collar and the plug are disposed within a valve body, a stem extends through the retainer collar and the plug to enable the plug to be moved within the valve body; and an anti-rotation collar to receive the retainer collar, the anti-rotation collar coupled at an end of a cage, the anti-rotation collar and the retainer collar having corresponding non-circular cross-sections to inhibit rotation of the retainer collar and the plug when the plug is moved within the valve body.