Fire fighting foam mixing system

Details Fire fighting foam mixing system Fire fighting foam mixing system

1989-08-17

1991-04-23

Nilson, Robert G.

Fluid handling

Self-proportioning or correlating systems

Self-proportioning flow systems

1375122, 1375645, 169 15, G05D 1103

Patent

active

050092448

ABSTRACT:
A fire fighting foam proportioner for use in providing precise proportioning of foam to fire fighting liquid, e.g. water, is disclosed. It includes a tank for the storage of foam concentrate which is loaded using a hand pump. The storage tank is coupled to a fire fighting line through a differential pressure responsive valve in the fire fighting line and a proportioning valve used to select the foam concentration desired, for example 0.2 to 1 percent of the fire fighting liquid. The differential pressure responsive valve applies discharge pressure to the foam concentrate as a function of the fluid flow through the line and therefore provides precise flow concentration maintenance despite changes if flow and line pressure. The differential pressure responsive valve includes to coaxial valving members and low and high pressure ports which are coupled to control the discharged pressure to the tank. The proportioner valve include a rotor with a continuous variable groove for precise control.

REFERENCES:
patent: 919036 (1909-04-01), Langer
patent: 2571476 (1951-10-01), Offutt
patent: 2737199 (1956-03-01), Ingram
patent: 3044456 (1962-07-01), Tripp
patent: 3188055 (1965-06-01), Lutjens
patent: 3220435 (1965-11-01), Ellingson
patent: 4552027 (1985-11-01), Larner

Affiliated with

Also associated with

Rating

Fire fighting foam mixing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fire fighting foam mixing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fire fighting foam mixing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1615394