Larner-Johnson Valve

Larner-Johnson Valve

A Larner-Johnson Valve is a mechanism used in dams and water pumping to control the flow of water through large water pipes. It was manufactured in the early 20th Century by the Larner-Johnson Company in the USA. The valves are still manufactured in the United Kingdom By Blackhall Engineering Limited.

External links

* [http://content.lib.washington.edu/cdm4/item_viewer.php?CISOROOT=%2Fww-swps&CISOPTR=226&DMSCALE=100&DMWIDTH=500&DMHEIGHT=500&DMMODE=viewer&DMFULL=0&DMX=133&DMY=17&DMTEXT=Johnson&DMTHUMB=0&REC=2&DMROTATE=0&x=268&y=178 Photo of a Larner-Johnson Valve]


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