A Positive-Shutoff Fuel Valve
Pneumatically actuated ball valve utilizes continuous contact ball seat seals and dynamic delta seals in lieu of bellows to seal against low pressure leads in fuel supply lines.
Tolpen, J.↗
Engineering topics
Tolpen, J.
Publications and source records attributed to Tolpen, J..
Flow-Straightener Sleeve for Pump Valve
Flow-straightening sleeve contains vanes in modified honeycomb pattern. Each vane curved fluid-dynamic wing that helps straighten and smooth out flow of fluid passing over it. Sleeve performs more reliably and quietly, possibility of damage to internal valve parts greatly reduced, valve life expectancy increased and time between overhauls extended.
Tolpen, J.↗