An illustrative valve block includes a plate, a fluid transfer block, and a diaphragm. The plate includes a channel configured to receive a first fluid and a recess connected to the channel. The fluid transfer block includes an inlet connection configured to receive a second fluid and an outlet connection. The fluid transfer block also includes a plurality of valve inlet bores connected to the inlet connection. The plurality of valve inlet bores are distributed along at least part of a first curved shape. The fluid transfer block further includes a plurality of valve outlet bores each fluidly connected to the outlet connection. The plurality of valve outlet bores are distributed along at least part of a second curved shape. The diaphragm is between the pressure plate and the fluid transfer block. The plurality of valve inlet bores and the plurality of valve outlet bores adjoin the recess.

A diaphragm pressure regulator includes: a body defining a process surface and including: an exhaust port having a discharge opening, and at least one vent void interconnecting the process surface and the exhaust port; and an inlet port, and at least one process void communicating with the process surface and the inlet port; a reference housing including a cavity defining a reference surface and a reference port in fluid communication with the cavity; and a diaphragm disposed between the body and the reference housing, the diaphragm movable between a first position engaged with the vent voids, and a second position wherein the membrane is not engaged with at least one of the vent voids, wherein a dome is defined between the cavity and the reference side of the diaphragm; and wherein the reference housing includes a sump configured to segregate liquid from the reference side of the diaphragm.

A bleed valve for use in a gas turbine engine of an aircraft includes a high-pressure cavity coupled to a valve terminal, which is itself coupled to a cap, which cap includes a valve seat configured to be sealed by a tube that serves as the valve gate. The tube is operably coupled to a movable end of a bellows, which is positioned within the high-pressure cavity. The opening and closing of the valve is controlled by the movement of the bellows within the high-pressure cavity, and, in turn, the movement of the tube towards the valve seat, with the valve closing as the bellows compresses.

A diaphragm-type control valve having a diaphragm and a valve body is provided preferably for use in the separation of and fluid control between a fluid source and a pressurized gas volume. The diaphragm element and a port in the body together form an intermediate chamber that eliminates the need for a check-valve downstream of the valve. In one preferred embodiment, an inner surface of the valve body defines a chamber having an inlet and an outlet in communication with the chamber, and an elongated seat member defining a groove in communication with the port. A diaphragm member having upper and lower surfaces is disposed within the chamber. The lower surface preferably includes a pair of spaced apart elongated members defining a channel therebetween. The diaphragm member engages the seat member placing the channel in communication with the groove to define an air seat in communication with the port.

Some embodiments include an assembly with an inlet housing enclosing an outlet housing that includes an inlet. The outlet housing includes an outlet port and a channel or aperture coupled to an outlet and apertures coupled to atmosphere. A moveable or flexible member is positioned in the inlet housing coupled to the outlet housing, and can deform, flex and/or move based on a flow and/or pressure of fluid from the inlet. Based on the flow and/or pressure of fluid from the inlet, the moveable or flexible member can reversibly move from a first position to a second position and/or from a second position to a first position. The first position is characterized by the moveable or flexible member being coupled to, proximate to, sealed to the aperture, and the second position is characterized by the moveable or flexible member being moved away from the aperture.

A diaphragm for separating fluid chambers in a fluid assembly. The diaphragm includes a sheet of flexible material having a central region and a peripheral Region, and wherein the peripheral region is provided with a larger dimension peripheral feature extending axially from the plane of the sheet.

A valve assembly includes a fluid flow passage, a valve seat, and an actuator assembly. The actuator assembly includes an actuator body stationary relative to the valve seat and a valve member moveable relative to the valve seat between a first position in which the valve member engages the valve seat, and a second position in which the valve member is remote from the valve seat. The valve member includes at least one orifice extending therethrough. The actuator assembly further includes a bellows attached to the valve member and to the actuator body. An interior surface of the bellows, the actuator body, and the valve member define a control chamber therebetween. An exterior surface of the bellows and the valve member define an outer volume therebetween such that the outer volume is around the control chamber. The at least one orifice fluidly communicates the control chamber with the outer volume.

An illustrative valve block includes a plate, a fluid transfer block, and a diaphragm. The plate includes a channel configured to receive a first fluid and a recess connected to the channel. The fluid transfer block includes an inlet connection configured to receive a second fluid and an outlet connection. The fluid transfer block also includes a plurality of valve inlet bores connected to the inlet connection. The plurality of valve inlet bores are distributed along at least part of a first curved shape. The fluid transfer block further includes a plurality of valve outlet bores each fluidly connected to the outlet connection. The plurality of valve outlet bores are distributed along at least part of a second curved shape. The diaphragm is between the pressure plate and the fluid transfer block. The plurality of valve inlet bores and the plurality of valve outlet bores adjoin the recess.

Some embodiments include an assembly with an inlet housing enclosing an outlet housing that includes an inlet. The outlet housing includes an outlet port and a channel or aperture coupled to an outlet and apertures coupled to atmosphere. A moveable or flexible member is positioned in the inlet housing coupled to the outlet housing, and can deform, flex and/or move based on a flow and/or pressure of fluid from the inlet. Based on the flow and/or pressure of fluid from the inlet, the moveable or flexible member can reversibly move from a first position to a second position and/or from a second position to a first position. The first position is characterized by the moveable or flexible member being coupled to, proximate to, sealed to the aperture, and the second position is characterized by the moveable or flexible member being moved away from the aperture.

Fluid control valve assemblies for use in fire protection sprinkler systems to control the flow of firefighting fluid to the system sprinklers. The assemblies include a pressure-operated fluid control valve having an internal fluid chamber in which fluid contained therein acts on an internal diaphragm to control the flow of fluid from an inlet to an outlet of the valve. An environment-responsive control device in fluid communication with the internal fluid chamber along a first fluid communication line controls the flow of fluid out of the fluid chamber to initiate actuation of the valve. A fluid-flow latch in fluid communication with the outlet of the valve along a second fluid communication line subsequently controls the simultaneous flow of fluid out of the fluid chamber and the actuation of the valve.