Foam Storage Tanks

Viking Bladder Tanks are an integral part of a balanced pressure proportioning system used to mix water and firefighting foam to generate an effective extinguishing medium. They are used extensively due to their effectiveness in maintaining a stable water/foam ratio under the variable flow rates and pressure conditions that occur during system operation. They are also highly reliable as they require no external power for operation. Viking Bladder Tanks are particularly well-suited for multiple hazard systems, sprinkler systems, and other systems operating under variable, non-predictable flow and pressure conditions.

Model VFT Vertical Foam Concentrate Bladder Tanks

• Carbon steel pressure vessel containing an elastomeric bladder between the water and foam concentrate
• Constructed according to ASME Boiler and Pressure Vessel Code (BPVC) Sec.VIII Div.1 with U-1A (“U” Stamp certification process)
• From 25 to 4,000 gallon capacities
• 175 psi and 232 psi standard approved pressure ratings – 100% pressure tested
• Standalone or pre-assembled with Ratio Controller and water/foam pipe work
• Protective coatings available for salt water applications or harsh environments
• FM Approved, UL Listed, CE Compliant, ASME Certified

Model VFT Horizontal Foam Concentrate Bladder Tanks

• Carbon steel pressure vessel containing an elastomeric bladder between the water and foam concentrate
• Constructed according to ASME Boiler and Pressure Vessel Code (BPVC) Sec.VIII Div.1 with U-1A (“U” Stamp certification process)
• From 50 to 5,250 gallon capacities
• 175 psi and 232 psi standard approved pressure ratings – 100% pressure tested
• Standalone or pre-assembled with Ratio Controller and water/foam pipe work
• Protective coatings available for salt water applications or harsh environments
• FM Approved, UL Listed, CE Compliant, ASME Certified

36 Gallon Bladder Tank Hose Station

• Constructed according to ASME Boiler and Pressure Vessel Code (BPVC) Sec.VIII Div.1 with U-1A (“U” Stamp certification process)
• 30 psi and 145 psi standard approved pressure ratings – 100% pressure tested
• Pre-assembled with supplementary hose line as required by NFPA 409
• Galvanized steel hose reel with water supply through center of reel
• Protective coatings available for salt water applications or harsh environments
• Assembled with FM Approved and UL Listed components, CE Compliant, ASME Certified

SAFE-Tank® Secondary Containment Tanks

• Double wall flat bottom tank manufactured of high density cross-linked polyethylene (XLPE)
• Provides secondary containment to avoid equipment or property damage, chemical loss, or injury in the event of a spill
• Designed for above-ground, vertical installation
• From 105 to 6,550 gallon capacities

Introduction to Foam Products

Foam System Solutions

Viking foam systems are designed to distribute a foam-water solution to a specific hazard area within a protected facility. Typical facilities include incineration plants, logistic centers, aircraft hangars, refineries, and many other areas where flammable liquid spill fires could occur. The type and potential size of the hazard determines the number of discharge devices, type of foam concentrate, and foam-water discharge rate and duration. Characteristics of some flammable products may require higher densities and special foam liquid concentrates.

NFPA 11 and EN13565-2 contain requirements for foam-water systems, with requirements for foam systems also found in NFPA 13, NFPA 16, NFPA30, NFPA 409, and NPFA 418.

Viking – Tested and Trusted
Viking Foam Systems are FM Approved to FMS130 and UL Listed to UL162. These test standards require that foam system components – including foam concentrate, proportioning devices, storage tanks, and discharge devices – are tested together and approved or listed as a complete system. Many Viking products have also been tested to local approval standards. See Viking technical datasheets for details.

Viking Bladder Tanks carry ASME BPVC Certification, and conform to the rules governing the design, fabrication, assembly, and inspection of boiler and pressure vessel components during construction.

For all applicable approvals, please refer to Viking technical documentation or contact your local Viking SupplyNet location.