Aspects herein include a valve to provide regulated fluid flow. The valve comprises a valve housing having an inlet and an outlet. The valve further comprises a valve seat disposed between the inlet and the outlet of the valve. The valve seat has a seat opening defined by a seat opening dimension and is fixed in relation to the valve housing. The valve further comprises a poppet disposed between the valve seat and the outlet of the valve, the poppet having a seat face opposing the valve seat. The seat face tapers from a poppet large dimension larger than the seat-opening dimension disposed toward the inlet end to a poppet small dimension smaller than the seat-opening dimension disposed toward the outlet end. The valve further comprises a plunger operatively coupled with the poppet as well as a solenoid within the valve chamber operatively coupled with the plunger.

A pneumatic controller includes a manifold, a selector, and a biasing member. The manifold has a low pressure port, a high pressure port, an actuator port, and a vent. The selector is movable within the manifold between a first position and a second position, the low pressure port in fluid communication with the actuator port in the first position, the high pressure port in fluid communication with the actuator port in the second position. The biasing member is supported within the manifold and urges the selector towards the first position, wherein the low pressure port is in fluid communication with the vent in both the first position and the second position to cool the biasing member with low pressure fluid received at the low pressure port. Inline valves, gas turbine engines, and methods of controlling fluid flow through inline valves are also described.

An inline valve includes a valve body, a valve member, and a control manifold. The valve body has an exterior, an inlet, and an outlet. The valve member is supported within the valve body and is movable between a first position and a second position. The inlet in fluid communication with the outlet while the valve member is in the first position and the inlet fluidly separated from the outlet while the valve member is in the second position. The control manifold is supported by the valve body, has a reference fluid port and a control fluid port, and is in pneumatic communication with the valve member through the valve body exterior to passive movement of the valve member according to pressure at the valve body inlet. Gas turbine engines and methods of controlling valves are described.

A controller for an inline valve includes a manifold seating a set screw and has a reference fluid port, a control fluid port, and an actuator fluid port. A selector is movable within the manifold between a first position and a second position, the reference fluid port in fluid communication with the actuator fluid port in the first position, the control fluid port in fluid communication with the actuator fluid port in the second position. A biasing member is arranged between the selector and the set screw and urges the selector towards the first position. The set screw extends through an exterior of the manifold for adjustment of differential in pressures at the reference fluid port and the control fluid port responsive to which the selector moves between the first position and the second position. Inline valves and methods of controlling fluid flow through inline valves are also described.

A pneumatic controller for an inline valve includes a manifold with a set screw seated within it, a selector, and a biasing member. The manifold has a low pressure port, a high pressure port, and an actuator port. The selector is movable within the manifold between a first position and a second position, the low pressure port in fluid communication with the actuator port in the first position, the high pressure port in fluid communication with the actuator port in the second position. The biasing member urges the selector towards the first position with a biasing force and is spaced apart from the selector to limit eccentric force exerted on the selector. Inline valves and methods of controlling fluid flow through inline valves are also described.

A bleed air valve comprises a piston that moves along a guide, where the piston includes a first surface and an opposing second surface. A pressure divider network includes a divider network inlet having an inlet cross sectional area in fluid communication with a fluid passage, a divider network outlet having an outlet cross sectional area in fluid communication with ambient pressure, and a network chamber in fluid communication with the divider network inlet and the divider network outlet. The network chamber has a pressure value between pressure at the divider network inlet and pressure at the divider network outlet. A shuttle valve includes a shuttle inlet and a shuttle outlet, where the shuttle outlet is in fluid communication with the first surface. An electromechanical valve receives a command signal and in response provides compressed air to an electromechanical valve output that is in fluid communication with the shuttle inlet.

A bleed air valve comprises a piston that moves along a guide, where the piston includes a first surface and an opposing second surface. A pressure divider network includes a divider network inlet having an inlet cross sectional area in fluid communication with a fluid passage, a divider network outlet having an outlet cross sectional area in fluid communication with ambient pressure, and a network chamber in fluid communication with the divider network inlet and the divider network outlet. The network chamber has a pressure value between pressure at the divider network inlet and pressure at the divider network outlet. A shuttle valve includes a shuttle inlet and a shuttle outlet, where the shuttle outlet is in fluid communication with the first surface. An electromechanical valve receives a command signal and in response provides compressed air to an electromechanical valve output that is in fluid communication with the shuttle inlet.

Aspects herein include a valve to provide regulated fluid flow. The valve comprises a valve housing having an inlet and an outlet. The valve further comprises a valve seat disposed between the inlet and the outlet of the valve. The valve seat has a seat opening defined by a seat opening dimension and is fixed in relation to the valve housing. The valve further comprises a poppet disposed between the valve seat and the outlet of the valve, the poppet having a seat face opposing the valve seat. The seat face tapers from a poppet large dimension larger than the seat-opening dimension disposed toward the inlet end to a poppet small dimension smaller than the seat-opening dimension disposed toward the outlet end. The valve further comprises a plunger operatively coupled with the poppet as well as a solenoid within the valve chamber operatively coupled with the plunger.

Bistable electric valve comprising a housing (2) in which there is defined a chamber (10) having first and second openings (11a, 12a) and a main ferromagnetic obturator (15) displaceable between first and second working positions in which it respectively closes and opens the first opening (11a) for enabling and disabling respectively a flow of fluid from the second opening (12a) to the first opening (11a). The main obturator (15) has a through-hole (17) for establishing communication between the upstream and downstream regions. First and second permanent magnets (13, 14; 31, 32) are mounted in the housing (2) in the vicinity of the first and second openings (11a, 12a) for keeping the main obturator (15) in the first and second working positions, respectively. An auxiliary obturator (22) is mounted moveable in between the main obturator (15) and said second opening (12a) between first and second positions in which it closes and opens the through-hole (17), respectively. A third permanent magnet (21) is integral with the auxiliary obturator (22) and a control solenoid (6) is arranged around the path of the main obturator (15) and the auxiliary obturator (21) and is designed to generate a magnetic flux tending to cause the attraction of the main obturator (15) and the auxiliary obturator (22) towards one or other of said first and second openings (11a, 12a).

Bistable electric valve comprising a housing (2) in which there is defined a chamber (10) having first and second openings (11a, 12a) and a main ferromagnetic obturator (15) displaceable between first and second working positions in which it respectively closes and opens the first opening (11a) for enabling and disabling respectively a flow of fluid from the second opening (12a) to the first opening (11a). The main obturator (15) has a through-hole (17) for establishing communication between the upstream and downstream regions. First and second permanent magnets (13, 14; 31, 32) are mounted in the housing (2) in the vicinity of the first and second openings (11a, 12a) for keeping the main obturator (15) in the first and second working positions, respectively. An auxiliary obturator (22) is mounted moveable in between the main obturator (15) and said second opening (12a) between first and second positions in which it closes and opens the through-hole (17), respectively. A third permanent magnet (21) is integral with the auxiliary obturator (22) and a control solenoid (6) is arranged around the path of the main obturator (15) and the auxiliary obturator (21) and is designed to generate a magnetic flux tending to cause the attraction of the main obturator (15) and the auxiliary obturator (22) towards one or other of said first and second openings (11a, 12a).