Howell-Bunger valve
<img src="https://eng-calculations.com/SVG/Hydraulic_engineering/Valves/Howell-Bunger valve.svg" alt="Howell-Bunger_valve" title="Howell-Bunger_valve">
https://eng-calculations.com/SVG/Hydraulic_engineering/Valves/Howell-Bunger valve.svg