An ejector device comprises a housing (110) having a motive fluid inlet (111) to receive motive fluid, a suction fluid inlet (112) to receive suction fluid and a fluid outlet (113) to output the motive fluid and the suction fluid. The ejector device comprises a nozzle and diffuser assembly (150) configured to fit within the housing (110). The nozzle and diffuser assembly (150) comprises a nozzle (160), a diffuser (170) and a connecting structure (180) connecting the nozzle (160) to the diffuser 170. The connecting structure (180) is configured to permit fluid flow between the nozzle (160) and the diffuser (170). The connecting structure (180) has apertures (182) configured to allow fluid to be drawn into the fluid flow between the nozzle 160 and the diffuser (170).

A water powered sump pump (10) is provided and has a flow control apparatus (12) connected to a source of water under pressure and to a suction generator. The flow control apparatus (12) includes a control valve assembly (90) having a drain outlet (99) positioned to drain all or most of the water from the assembly (90). The sump pump (10) also includes an actuator assembly (98) for actuating the control valve assembly via a lever (114) that engages the assembly (90) and a float assembly (138).

A water powered sump pump (10) is provided and has a flow control apparatus (12) connected to a source of water under pressure and to a suction generator. The flow control apparatus (12) includes a control valve assembly (90) having a drain outlet (99) positioned to drain all or most of the water from the assembly (90). The sump pump (10) also includes an actuator assembly (98) for actuating the control valve assembly via a lever (114) that engages the assembly (90) and a float assembly (138).

Device for depressurizing at least one chamber (E1, E2) of a turbomachine (1) intended to accommodate at least one bearing (7, 8) of a rotor of said turbomachine, which bearing is supplied with lubricating oil under pressure by a feed pump (15) and by an oil feed duct (16), said device comprising at least one breather tube (10) connected to said chamber in order to extract an oil mist therefrom, an oil separator (30) able to separate the oil from the air in said mist and a jet pump (11) pneumatically connected to said chamber by said breather tube and said oil separator, said pump comprising a pump tube (17) into which there open a primary circuit (21) supplied with fluid under pressure via a fluid feed duct and a secondary circuit (22) connected to said oil separator in order to place the chamber under a reduced pressure, characterized in that the primary circuit (21) comprises at least two pressurized-fluid injectors (13, 24) positioned in said tube and fed independently of one another.

Device for depressurizing at least one chamber (E1, E2) of a turbomachine (1) intended to accommodate at least one bearing (7, 8) of a rotor of said turbomachine, which bearing is supplied with lubricating oil under pressure by a feed pump (15) and by an oil feed duct (16), said device comprising at least one breather tube (10) connected to said chamber in order to extract an oil mist therefrom, an oil separator (30) able to separate the oil from the air in said mist and a jet pump (11) pneumatically connected to said chamber by said breather tube and said oil separator, said pump comprising a pump tube (17) into which there open a primary circuit (21) supplied with fluid under pressure via a fluid feed duct and a secondary circuit (22) connected to said oil separator in order to place the chamber under a reduced pressure, characterized in that the primary circuit (21) comprises at least two pressurized-fluid injectors (13, 24) positioned in said tube and fed independently of one another.

An assembly is provided that integrates a jet pump with a liquid trap to drain liquid fuel from vapor flow, such as vapor vented from a fuel tank. The assembly includes a housing that has a liquid trap configured to trap liquid carried in vapor flowing through the housing. A jet pump has a venturi nozzle and is in selective fluid communication with the liquid trap so that liquid flow through the venturi nozzle induces draining of the liquid trap.

An assembly is provided that integrates a jet pump with a liquid trap to drain liquid fuel from vapor flow, such as vapor vented from a fuel tank. The assembly includes a housing that has a liquid trap configured to trap liquid carried in vapor flowing through the housing. A jet pump has a venturi nozzle and is in selective fluid communication with the liquid trap so that liquid flow through the venturi nozzle induces draining of the liquid trap.

Apparatus, e.g., including a pump or rotary device, having a discharge casing and a discharge casing insert. The discharge casing may be configured with a discharge flow pathway for providing a flow of effluent being pumped and discharged, the discharge flow pathway having a discharge flow pathway wall, the discharge casing also configured with a discharge casing insert borehole that passes from an outer surface of the discharge casing through the discharge flow pathway wall. The discharge casing insert may include a discharge casing Venturi plug portion to be received in the discharge casing insert borehole and arranged in the discharge flow pathway, the discharge casing Venturi plug portion configured with a restricted discharge flow pathway for providing a partial obstruction in the discharge flow pathway and the flow of the effluent being pumped and discharged.

Apparatus, e.g., including a pump or rotary device, having a discharge casing and a discharge casing insert. The discharge casing may be configured with a discharge flow pathway for providing a flow of effluent being pumped and discharged, the discharge flow pathway having a discharge flow pathway wall, the discharge casing also configured with a discharge casing insert borehole that passes from an outer surface of the discharge casing through the discharge flow pathway wall. The discharge casing insert may include a discharge casing Venturi plug portion to be received in the discharge casing insert borehole and arranged in the discharge flow pathway, the discharge casing Venturi plug portion configured with a restricted discharge flow pathway for providing a partial obstruction in the discharge flow pathway and the flow of the effluent being pumped and discharged.

An ozone injector device comprising a housing, a corona tube disposed within the housing and configured to generate ozone, a check-valve removably coupled to the water passageway, a second end of the check-valve having a cavity with a movable float contained therein, an ozone inlet fitting removably coupled to the check-valve, the ozone inlet being in fluid communication with the corona tube via a corona discharge tube such that ozone entering the water passageway through the ozone inlet fitting must pass through the check valve, and a spring-loaded clearing piston positioned to move into and out of the water passageway, the clearing piston being biased upwards, and configured to prevent flow of ozone into the water passageway.