The Ansul SILV-EX® Plus Class A Fire Control Concentrate is a premium expansion foam concentrate specifically designed for Class A fuel fires involving wood, paper, coal, rubber, and other common combustible materials. Formulated with specialty hydrocarbon surfactants, stabilizers, corrosion inhibitors, and solvents, SILV-EX Plus delivers superior wetting, penetrating, and cooling performance while providing excellent cold-weather reliability. Proven effective on deep-seated fires such as tire fires, structure fires, paper fires, coal fires, and wildland fires, it is a trusted solution for municipal, industrial, and forestry firefighting applications.

By dramatically reducing the surface tension of water, SILV-EX Plus allows water to penetrate deeper into burning materials, making water up to five times more effective on Class A fuels. The brilliant white foam creates a dense insulating blanket that suppresses combustible vapors, reflects heat, reduces the risk of reignition, and clings to vertical surfaces for added structure protection. Compatible with aspirating and non-aspirating nozzles, compressed air foam systems (CAFS), and aerial firefighting operations, SILV-EX Plus provides exceptional extinguishment performance while remaining biodegradable and environmentally responsible.

Features

• Designed for low-, medium-, and high-expansion foam applications
• Effective on Class A fires involving wood, paper, coal, rubber, structures, and wildland fuels
• Proven performance on deep-seated fires including tire, paper, coal, and structure fires
• Superior wetting and penetrating characteristics improve extinguishment efficiency
• Makes water up to five times more effective on Class A fuels
• Creates a dense insulating foam blanket that helps prevent reignition
• Suppresses combustible vapors while cooling the fuel source
• Brilliant white foam reflects heat and enhances exposure protection
• Clings to vertical surfaces for structure protection
• Compatible with CAFS, aspirating and non-aspirating nozzles, and aerial firefighting operations
• Can be proportioned with fresh, brackish, or seawater
• Low proportioning rates reduce concentrate storage and water hauling requirements
• Biodegradable formula with no EPA reportable contents
• Will not harm fish, wildlife, or new forest growth when used as directed
• Excellent cold-weather performance
• Approximately 20–25 year shelf life when properly stored

Specifications

• Brand: Ansul
• Product Type: Class A Fire Control Foam Concentrate
• Container Size: 5 Gallon (19 L) Pail
• Part Number: 434467
• Foam Expansion: Low, Medium, and High Expansion
• Appearance: Light Amber Clear Liquid
• pH: 7.0 – 8.5
• Flash Point: Greater than 200°F (93.3°C)
• Pour Point: 22°F (-5.5°C)
• Typical Proportioning Range: 0.1% – 1.0%
• Compatible Water Sources: Fresh Water, Brackish Water, and Seawater
• Recommended Storage Temperature: 30°F to 120°F (-1°C to 49°C)
• Shelf Life: Approximately 20–25 Years
• Compliance: NFPA 1150, USDA Forest Service Specification 5100-307a, Canadair Approved for CL-215 and CL-415 Aircraft