Salt water fire fighting supply normally excluding salt water

Details Salt water fire fighting supply normally excluding salt water Salt water fire fighting supply normally excluding salt water

1977-08-03

1979-02-20

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Self-controlled branched flow systems

137567, 169 13, A62C 3700

Patent

active

041401468

ABSTRACT:
A fresh water tank or sump is positioned with respect to a salt water or seawater supply in a manner such that the level of fresh water in the sump is substantially higher than the highest expected level of the salt water. A salt water supply pipe is connected into the fresh water tank at a point well below the normal level of fresh water in the tank but at a point above the suction of at least one pump adapted to pump water for fighting fire from the tank to a fire fighting water supply system. The seawater supply pipe is equipped with a flap or equivalent valve which is maintained closed by the hydrostatic head of the fresh water which is higher than that of the salt water at said flap valve.

REFERENCES:
patent: 662229 (1900-11-01), Ewart

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