The 100 Year Project | New York | Larner-Johnson® Flow Control Valves | Plunger Or Needle Type Valve

[@sbr630]

It would be great if you publish how the valve actually works. Thanks a lot.

[@ryanb1874]

Are these for jets

[@ryanb1874]

Nevermind. It's been proven simple designs using flat cylindrical plates, w a fraction of inch gap at full open, produces non destructive laminar flow. At thousands of gallons a minute with surface areas of several inches.