User talk:Raymond Dean

For the Thomas Savery section it states, "The 'fire engine' was not very effective and could not work beyond a limited depth of around 30 feet."

It is my understanding that the laws of physics prevent any vacuum pump from pulling up water from 30 feet. I've managed to use a peristaltic pump and pull water up from almost a 30 foot depth to water. To me, this sentence is misleading because no pump can pull water up from 30 feet.

Keep in mind, the depth to the water level below it can be 5 feet and the intake can be 100 feet below that and it will pull water up. It's the depth to the water not the depth of the intake.