National Foam High Expansion 2%

National Foam High Expansion 2%

National Foam High Expansion foam concentrates are superior quality synthetic foam concentrates for extinguishing fires where total flooding application is desired. Foam generated from high expansion foam concentrates effect extinguishment in two ways; total flooding of the involved area limits the amount of oxygen required to support free combustion and the foam provides a slow, continuous release of foam solution for cooling and penetration.

High Expansion foam concentrates are low energy foaming agents designed for use with corresponding high expansion foam generators. High Expansion foam is suitable for use in combating fires in buildings, process areas, warehouses, and aircraft hangar systems. High expansion foam systems can be used for protection of LNG storage areas by quickly blanketing the flammable liquid surface and helping to control vapor release.

Environmentally responsible HI-EX 2% is the next generation in high expansion firefighting foam concentrates and is approved by Underwriters Laboratories.

Features:

• Stable long-lasting uniform bubble structure
• Suitable for use with fresh or sea water
• Compatible with standard proportioning equipment
• Excellent wetting and penetrating capabilities when used combating Class A fires
• Suitable for use with foam compatible dry powder extinguishing agents

Applications
National Foam HI-EX 2% is suitable for use in combating fires in buildings, process areas, warehouses, aircraft hangar systems, or anywhere total flooding is desired. High expansion foam systems can be used for protection of LNG storage areas by quickly blanketing the flammable liquid surface, and helping to control vapor release. HI-EX 2% also demonstrates excellent wetting capabilities when used as a wetting agent in combating Class A fires. Although developed for use in high expansion foam generating equipment, HI-EX® 2% can be used in both medium and low expansion foam equipment.

Storage and Handling
National Foam HI-EX 2% is ideally stored in its original shipping container or in tanks or other containers that have been designed for such foam storage. Recommended construction materials are stainless steel (Type 304L or 316), high density cross-linked polyethylene, or reinforced fiber-glass polyester (isophthalic polyester resin) with a vinyl ester resin internal layer coating (50-100 mils). Refer to National Foam Technical Bulletin NFTB100 for further information.

Please review and follow the tank, eductor, and pump manufacturer recommendations for maintaining your system, particularly when changing concentrated foam or additive products. Use the system and the product in compliance with the manufacturer directions.