National Foam Handline Proportioners are venturi devices that introduce Foam Concentrate into a flowing stream of water at a controlled rate of either 1%, 3% or 6%. As water flows through the venturi (water orifice) at a high velocity, a negative pressure area develops at the discharge of the venturi. Handline Proportioners are designed for hose line applications.
The National Foam HLP-17M Foam Equipment name is one of 17 Foam Equipment from Kidde Fire Fighting (National Foam) featured on TheBigRedGuide.com. View technical specifications, download datasheets and compare the HLP-17M with other Foam Equipment.