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A jet pump has a chamber with a jet nozzle at the inlet port and a diffuser fitted into the outlet port with a suction port fitted in the chamber. A ball valve having a passage therethrough is fitted ahead of the jet nozzle and angular rotation of the ball valve creates a swirling action in the jet

A jet pump has a chamber with a jet nozzle at the inlet port and a diffuser fitted into the outlet port with a suction port fitted in the chamber. A ball valve having a passage therethrough is fitted ahead of the jet nozzle and angular rotation of the ball valve creates a swirling action in the jet nozzle and adjustment thereof will provide maximum pumping action for various operating conditions.

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A jet pump comprising a housing assembly defining a chamber having a tubular inlet port for motive liquid, and a tubular outlet port in axial alignment, a jet nozzle fitted in the inlet port and having its discharge end within the chamber, a ball valve having a cylindrical passage therethrough dispo

A jet pump comprising a housing assembly defining a chamber having a tubular inlet port for motive liquid, and a tubular outlet port in axial alignment, a jet nozzle fitted in the inlet port and having its discharge end within the chamber, a ball valve having a cylindrical passage therethrough disposed in the inlet port spaced from the jet nozzle, the passage through the valve being normally arranged at an acute angle to the axis of the inlet port, a diffuser fitted in the outlet port, and a suction port fitted in said chamber whereby angular rotation of the ball valve to an acute angle with respect to the inlet port creates a swirling motion in liquid passing therethrough, said swirling motion being adjustable by rotation of the ball valve to provide maximum pumping action for various operating conditions.