- Settore: Fire safety
- Number of terms: 98780
- Number of blossaries: 0
- Company Profile:
Established in 1896, NFPA's mission is to reduce the worldwide burden of fire and other hazards on the quality of life by providing and advocating consensus codes and standards, research, training, and education.
A foam concentrate tank fitted with an internal bladder which uses water flow through a modified venturi type proportioner to control the foam concentrate injection rate by displacing the foam concentrate within the bladder with water outside the bladder.
Industry:Fire safety
A foam concentrate tank with no bladder that uses water flow through an orifice to displace the foam concentrate in the tank with water to add foam concentrate through an orifice into a water line at a specified rate. This device is only suitable for foams having a specific gravity of at least 1. 15.
Industry:Fire safety
High back-pressure or forcing type. A foam maker utilizing the Venturi principle for aspirating air into a stream of foam solution forms foam under pressure.
Industry:Fire safety
A foam proportioning system that automatically adjusts the flow of foam concentrate into the water stream to maintain the desired proportioning ratio.
Industry:Fire safety
A foam proportioning system that requires manual adjustment to maintain the proportioning ratio when there is a change of flow or pressure through the foam proportioner.
Industry:Fire safety
A foam proportioning system that utilizes a foam pump and valve(s) to balance foam and water pressures at a modified venturi-type proportioner located in the foam solution delivery piping; a foam concentrate metering orifice is fitted in the foam inlet section of the proportioner.
Industry:Fire safety
A foam proportioning system utilizing a foam concentrate pump at all design flow rates, the constant pressure of which is greater than the maximum water pressure under all operating conditions.
Industry:Fire safety
A foam system that combines air under pressure with foam solution to create foam.
Industry:Fire safety
A foam-water sprinkler system employing open discharge devices, which are attached to a piping system that is connected to a water supply through a valve that is opened by the operation of a detection system, which is installed in the same areas as the discharge devices. When this valve opens, water flows into the piping system and discharges from all discharge devices attached thereto.
Industry:Fire safety
