The present disclosure relates to a hydrostatically adjustable flow control valve. In one embodiment, the valve includes a fixed sleeve that slidably receives a spool. A spring biases the spool relative to the fixed sleeve. A primary orifice is used to deliver fluid to the interior area of the fixed sleeve and spool. A control device is used to selectively vary the rate at which fluid drains from the interior area. Draining the fluid results in the spool being received within the interior of the fixed sleeve. The movement of the spool opens flow ports within the sleeve. This, in turn, allows fluid to exit the valve. Conversely, the control device can be set to prevent fluid drainage. This results in the spool extending from interior of the fixed sleeve, the closure of the flow ports, and the sealing of the valve.

An air release structure of an integrated flow control mechanism includes a flow control housing, a radiator nipple provided on an upper portion of the flow control housing and forming a bypass passage portion together with the flow control housing, a float provided in the bypass passage portion and an elastic member to support the float elastically and to selectively open the bypass passage portion.

A breather device includes an intake path configured to communicate between an interior space of a target case and an exterior space, an exhaust path configured to communicate between the interior space and the exterior space and at least partially separated from the intake path, an intake valve inserted in the intake path and configured to allow outside air to flow into the interior space only when an internal pressure Pi is lower, at least by a fixed extent, than an external pressure Po, and an exhaust valve inserted in the exhaust path and configured to allow gas within the interior space to flow toward the exterior space only when the internal pressure Pi is higher, at least by a fixed extent, than the external pressure Po, and a water stop filter disposed downstream of the intake valve in an intake air flowing direction in the intake path.

A breather device includes an intake path configured to communicate between an interior space of a target case and an exterior space, an exhaust path configured to communicate between the interior space and the exterior space and at least partially separated from the intake path, an intake valve inserted in the intake path and configured to allow outside air to flow into the interior space only when an internal pressure Pi is lower, at least by a fixed extent, than an external pressure Po, and an exhaust valve inserted in the exhaust path and configured to allow gas within the interior space to flow toward the exterior space only when the internal pressure Pi is higher, at least by a fixed extent, than the external pressure Po, and a water stop filter disposed downstream of the intake valve in an intake air flowing direction in the intake path.

A combined dirt collector and cutout cock (CDC & COC) device for a rail car control to prevent unintentional re-pressurization of the control valve and rail car braking system. The device has an inlet configured for interconnection to an air supply, an outlet configured for interconnection to a control valve of a rail car, a valve moveable between a first position where an inlet is connected to an outlet and a second position where the inlet is isolated from the outlet, and a control valve vent positioned downstream of the valve and configured to open in response to the valve being moved into the second position. The valve may include a ball having a first passageway for selectively connecting and disconnecting the inlet from the outlet and a second passageway formed therethrough that is positioned to interconnect the outlet with the vent when the valve is in the second position.

A combined dirt collector and cutout cock (CDC & COC) device for a rail car control to prevent unintentional re-pressurization of the control valve and rail car braking system. The device has an inlet configured for interconnection to an air supply, an outlet configured for interconnection to a control valve of a rail car, a valve moveable between a first position where an inlet is connected to an outlet and a second position where the inlet is isolated from the outlet, and a control valve vent positioned downstream of the valve and configured to open in response to the valve being moved into the second position. The valve may include a ball having a first passageway for selectively connecting and disconnecting the inlet from the outlet and a second passageway formed therethrough that is positioned to interconnect the outlet with the vent when the valve is in the second position.

A valve system for controlling a corrosive process liquid flow, while avoiding corrosion due to a liquid/vapor interface of the process liquid, causes the process liquid to flow from the valve through a purge port into a vertical segment of a purge line. During valve initialization, a non-reactive gas backpressure within the purge line is controlled to establish the liquid/vapor interface at a desired height within the vertical segment, as determined by an interface level sensor, which can be ultrasonic. The vertical segment is constructed from, or lined with, a material that can withstand contact with the liquid/vapor interface. During valve operation, the non-reactive gas pressure can continue to be regulated, or a purge valve can be shut, trapping a fixed quantity of the non-reactive gas within the purge line. The valve can include a heater configured to prevent a molten process liquid from solidifying within the valve.

A deaeration valve includes a housing and a ball in fluid communication with housing. The ball can include a body, a seat defining a bleed passage therein, and a deaeration pin slidably disposed within the bleed passage. Further, the deaeration pin may include a head, a retention feature, and a shaft positioned between the head and the retention feature.

A three-way valve for a liquid fuel supply system includes a housing defining a liquid fuel inlet, a purge gas inlet, and at least one drain port. The liquid fuel inlet is sized to receive liquid fuel therethrough for selectively channeling the liquid fuel to a combustor of a gas turbine engine. The purge gas inlet is sized to receive purge gas therethrough for selectively purging liquid fuel from said three-way valve. The at least one drain port is oriented to selectively channel liquid fuel from said three-way valve when purge gas is purging liquid fuel from said three-way valve.

A three-way valve for a liquid fuel supply system includes a housing defining a liquid fuel inlet, a purge gas inlet, and at least one drain port. The liquid fuel inlet is sized to receive liquid fuel therethrough for selectively channeling the liquid fuel to a combustor of a gas turbine engine. The purge gas inlet is sized to receive purge gas therethrough for selectively purging liquid fuel from said three-way valve. The at least one drain port is oriented to selectively channel liquid fuel from said three-way valve when purge gas is purging liquid fuel from said three-way valve.