A bypass flow regulator for a vacuum waste system (VWS) is disclosed. The bypass flow regulator includes a valve assembly installable in an aircraft vent line leading outside the aircraft from an onboard VWS waste tank. The vent line directs an airstream pumped from the waste tank to an external outlet under suction (from which outlet the airstream is ejected from the aircraft). The valve assembly includes a group of valves (e.g., umbrella valves) set into the path of the airstream. The valves may collectively modulate the flow rate of the airstream by adjusting their effective flow area.

A fluid flow control system serving as an inflow port from a fluid reservoir (R) to the interior of a production pipe (S) is in the form of a housing (3b, 3c, 3d, 3e, 3f, 3g, 3h, 3i, 3j, 3k, 3l). The housing has a primary flow path (18) and a secondary flow path (19). The secondary flow path is in fluid communication with a chamber (B) in which is arranged an actuator (5) for a valve device (4), the valve device arranged to open and close the primary flow path. At least one flow restrictor (1,2) is arranged in the secondary flow path, the flow restrictor arranged to provide a pressure to chamber (B) sufficient to actuate the valve to an open position when the fluid flowing through the secondary flow path is oil, and a pressure sufficient to actuate the valve to a closed position when the fluid has a viscosity and/or density less than oil.

A flow regulator for a compressed natural gas (CNG) system is defined by a housing having at least one inlet port, at least one outlet port and at least one interior passage fluidically interconnecting the inlet and outlet ports. A mechanical bypass valve is disposed between the inlet and outlet ports and enabled by a movable biased feature which moves based on inlet pressure and in which the bypass valve is closed only after inlet pressure is greater than a predetermined threshold. The bypass valve is a fail safe wherein gas regulation does not occur until the inlet pressure is sufficient to close the bypass valve. The flow regulator further includes a coolant bowl defined by a serpentine channel formed in a coolant plate as well as a balanced valve as a regulator control feature in conjunction with a weighting or loading mechanism having a diaphragm.

A bleed air selector valve allows selection and extraction of bleed air from a plurality of different engine bleed air ports to optimize engine efficiency and to maintain bleed requirements using a single line replaceable unit. The bleed air selector valve uses a relatively simple arrangement of poppets, check valves, and thermostatic compensation to augment high and low temperature to within acceptable limits. The bleed air selector valve significantly reduces weight, cost, envelope, and system complexity as compared to known two-port bleed systems with heat exchanger thermal compensation.

A device and method to improve accuracy of a water meter where a fluid is introduced into a valve assembly having an external casing. The fluid contacts a toggle stopper having a shaft, plate, and guides. A calibrated spring positioned around the shaft in contact with the plate assesses if the desired fluid meets a predetermined pressure. If yes, the calibrated spring compresses thereby toggling the plate within the chamber to allow desired fluid to enter the chamber. If no, the calibrated spring remains in an expanded state to seal the valve assembly. Upon such seal, there is an equalizing of both the desired and undesired fluids to the same pressure by decreasing the volume of the undesired fluid, causing the calibrated spring to compress and reopen.

Flow control valves may be positioned downstream of water meters to increase pressure and compress entrained water vapour passing through the meters. However, turbulence within such valves can cause the valve's head to move radially, bending a shaft within the valve which may break. Accordingly, there is provided a flow control valve comprising: a housing having a flow passage; a valve seat defined within the flow passage; a valve head moveable to a closed position to engage the valve seat and seal the flow passage; a shaft secured to the valve head; a support slidingly mounting the shaft within the housing; a spring biasing the valve head to the closed position and configured to maintain the valve head in the closed position until a predetermined pressure is applied; and a guide assembly extending along at least a portion of the flow passage to constrain radial movement of the valve head.

It is provided a fluid flow control device for establishing a controllable fluid communication between an external fluid reservoir and a base pipe constituting part of a production string, as well as a production string and a method using such a fluid flow control device. The fluid flow control device comprises a primary flow path arranged inside a fluid control device housing, a secondary flow path and a movable valve element arranged at and/or within the primary flow path. The inlet of the secondary flow path is arranged separate from the inlet of the primary flow path.

A flow limiter component including a monocoque body having first, second, and third sections along a longitudinal axis. The first section includes a first end defining a first edge of the monocoque body and a bordering second end, and a first inner diameter defining a first chamber inside the first section. The second section includes a solid wall, with an orifice disposed therein, in fluid communication with the first chamber, the orifice defined by a second inner diameter. The third section includes a third end bordering the second section and a fourth end defining a second edge of the body, and a third inner diameter, the third inner diameter defining a second chamber in the third section. The second chamber is in fluid communication with the orifice. The first inner diameter is greater than the third inner diameter, and the third inner diameter is greater than the second inner diameter.

A cooling system includes a coolant source to cool down components of a processing chamber and a return line for the coolant coupled between the processing chamber and the coolant source. The return line has a valve, which includes a flow compartment having a first inlet and an outlet that support a default flow rate of the coolant, the flow compartment also having a second inlet. The valve has a plunger with a tip to variably open and close the second inlet to vary a flow rate of the coolant from the default flow rate. The valve has a shape memory alloy (SMA) spring positioned on the plunger between a side of the valve and the tip, the SMA spring attached to the tip to variably withdraw the tip from the second inlet in response to a rise in temperature of the coolant above a threshold temperature value.

A liquid sprayer powered by an inflatable standup paddle board (iSUP), comprising: a container; a sprayer hose; and an air hose. The container is configured to hold a liquid, the sprayer hose comprises a spray nozzle and is configured to pass the liquid from the container through the spray nozzle. The air hose may be configured to connect to the container and to an iSUP. The air hose may comprise a flow regulator and one-way check valve. The flow regulator is configured to start, stop, increase, and decrease a flow of air from the iSUP into the container. The one-way check valve substantially prevents the liquid from entering the iSUP. The container may accept the flow of air from the iSUP when connected to the iSUP, such that the container is pressurized. When the container is pressurized, the spray nozzle passes the liquid out of the liquid sprayer.