Patent ID: 11934208
Assignee: TYCO FIRE PRODUCTS LP
Field: Control (Instruments)
Classification: CPC G  A | IPC A  G

Claim 1:
2. The system of claim 1, the variable foam concentrate orifice comprising:
a foam inlet fluidly coupled to the foam concentrate supply; and
a variable orifice fluidly coupled to the foam inlet;
wherein the actuator is coupled to a plate, such that the plate is movable by the actuator to adjust a size of the variable orifice, such that when the temperature associated with the foam concentrate is below a minimum working temperature the plate is in a first position and a first orifice area is obtained, and when the temperature associated with the foam concentrate is at or above the minimum working temperature the actuator moves the plate to a second position to adjust the size of the variable orifice and obtain a second orifice area.