Foam Discharge Devices

Audible standards, relays, fault isolators and mounting bases

Low Expansion Synthetic Fluorine Free Foam (SFFF) systems consist of various FM Approved and/or UL Listed components to create a complete package to protect flammable liquids. Included in this package are pendent and upright foam water sprinklers, which are FM Approved non-aspirating foam discharge devices in both closed and open sprinkler configurations!

Foam Chamber

The Low Expansion Synthetic Fluorine Free Foam (SFFF) System consists of various FM Approved and/or UL Listed components to create a complete package to protect flammable liquids. Included in this package is a foam chamber, suitable for the protection of fixed roof mounted tanks and used as a low expansion Type II discharge device (as defined by NFPA 11), with approved and/or listed foam concentrates and proportioning devices.

Foam chambers are designed to apply a blanket of expanded foam over the surface of a flammable liquid fire as gently as possible to achieve extinguishment and/or vapor suppression. Typical applications include factories, large tank farms, oil refineries, and chemical plants. The foam chamber is UL listed with USP concentrate (Hydrocarbons only) at an application rate of 0.1 gpm/sq ft.

Foam Oscillating Unit

The Low Expansion Synthetic Fluorine Free Foam (SFFF) System consists of various FM Approved and/or UL Listed components to create a complete package to protect flammable liquids. Included in this package is a foam monitor, effectively covering a large application area with water or foam solutions!

Manual or oscillating monitors are usually part of a fixed flood or flow control system, but can also be supplied locally via hydrant supply or fire truck hose, and can also be mounted on a mobile trailer for greater versatility in challenging fire scenarios. Foam monitors are used in areas such as flammable liquid storage tank farms, loading racks, incineration facilities, recycling plants, aircraft hangars, helidecks and dock protection applications.

Viking offers Model VMT, VMH, VMW Monitors, Model VNN, VNS Nozzles, and Model VSO Oscillating Units.

Grate Nozzle Upgrade Kit

The Grate Nozzle Upgrade Kit is intended for use with Viking Grate Nozzles to upgrade the nozzle assembly from GN200 to GN202 models.

The FM Approved Model GN202 Grate Nozzle is available in 90°, 180° and 360° variations, with widths of 555 mm, 20“ and 26” to meet design requirements.

The grate nozzle is a low expansion foam discharge device that produces a uniform discharge pattern with a maximum distance of 50ʹ x 25ʹ (15.2 m x 7.6 m), offering effective flammable liquid protection. The nozzle is installed flush with the floor of the protection area within the discharge trench. The companion trench drain grate is specially engineered to accept the grate nozzle and serves as the cover for the drain grate.

GN202 Model Grate Nozzles

The Low Expansion Synthetic Fluorine Free Foam (SFFF) system consists of various FM Approved and/or UL Listed components to create a complete package. Included in this package is the FM Approved Model GN202 Nozzle Grate, available in 90°, 180° and 360° variations, with widths of 555 mm, 20“ and 26” to meet design requirements.

The grate nozzle is a low expansion foam discharge device that produces a uniform discharge pattern with a maximum distance of 50ʹ x 25ʹ (15.2 m x 7.6 m), offering efficient flammable liquid protection. The nozzle is installed flush with the floor of the protection area within the discharge trench. The companion trench discharge grate is specially engineered to accept the grate nozzle and serves as a cover for the discharge grate.

VFM Model Foam Maker

The Low Expansion Synthetic Fluorine Free Foam (SFFF) System consists of various FM Approved and/or UL Listed components to create a complete package for flammable liquid protection. Included in this package is the foam maker, which is an in-line fixed foam suction device used in low expansion foam discharge applications to protect pond embankments and other low level discharge applications.

The foam maker has been FM approved with 3% USP concentrate (Hydrocarbons only) at an application rate of 0.1 gpm/square foot, and with ARK concentrate (Polar solvents & Hydrocarbons) at the following application rates:

  • Ethanol 0.16 gpm/square meter.
  • Hydrocarbons & Acetone 0.2 gpm/sqm.
  • Isopropyl Alcohol (IPA) 0.25 gpm/sq ft.
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