Additional Product Information
Foam Chambers are air-aspirating devices designed to protect flammable liquid storage tanks by applying foam down the inside wall of the tank. The unit protects various tanks including cone roof tanks with or without internal floaters, most open tanks, and open top floating roof tanks.
The foam chamber contains an orifice plate (sized for the required flow and inlet pressure), air inlets, an expansion area, and a discharge deflector to direct the gentle application of expanded foam onto the fuel surface A vapor seal prevents entrance of vapors into the foam chamber and supply pipe.
Additional features include a choice of four foam chamber sizes for various foam solution flow rate requirements, a hinged inspection hatch with captive bolt securement for ease of inspection and maintenance, and a choice of primed or standard red finish. (A polyamide “CR” epoxy finish is available for marine and other corrosive environments.) After bursting, the Teflon vapor seal allows unrestricted flow of expanded foam when the system is discharging. UL Listed with an assortment of ANSUL concentrates.
Floating Roof Foam Makers
Floating Roof Foam Makers (FLR) are air-aspirating foam discharge devices used to protect floating roof, flammable liquid storage tanks. Specifically, the protected storage tanks must be of open-top construction with either double-deck or pontoon-type floating roofs. This type of construction eliminates the need for a vapor seal, allowing the use of foam makers rather than foam chambers. Additional applications include protection of diked flammable liquid storage and spill areas.
Floating Roof Foam Makers are used with various types of proportioning systems such as bladder tanks, balanced pressure pump proportioning systems, or line proportioners. The foam makers can be used with appropriate ANSUL low-expansion foam agents for the flammable liquid being protected.
FLR-30-FP and FLR-90-FP Rim Seal Foam Pourers are air aspirating foam discharge devices that protect floating roof, flammable liquid storage tanks. The tanks must be open-top construction with either double-deck or pontoon-type floating roofs. The advantage of foam pourers is better expansion for rim seal protection.
Rim Seal Foam Pourers are used with various types of proportioning systems such as bladder tanks, balanced pressure pump proportioning systems, or line proportioners. They can be used with appropriate ANSUL low-expansion foam agents for the flammable liquid being protected.
The pourer utilizes the UL Listed FLR-30 or FLR-90 Foam Makers and discharges fully aspirated foam directly to the annular seal area of open top floating roof storage tanks for fire or vapor suppression. The design allows for uniform and cohesive foam flow and provides protection from the wind, ensuring gentle discharge of the foam onto the protected area of the tank. This gentle application minimizes submergence and agitation, increasing the effectiveness of the foam blanket.
High Back-Pressure Foam Makers (HBPFM)
High Back-Pressure Foam Makers are designed to generate expanded foam for the purpose of subsurface injection into a cone-roof liquid hydrocarbon storage tank.* The foam maker is typically located outside the diked area surrounding the storage tank. Expanded foam is injected through a dedicated foam line or into a product line to the storage tank.
The high back-pressure foam maker is capable of generating expanded foam within the optimum expansion ratio range of 2:1 to 4:1 for subsurface injection. The foam maker can discharge against a back pressure as high as 40% of the operating inlet pressure. A minimum foam maker inlet pressure of 100 psi (6.9 bar) is typically required for satisfactory operation.
High back-pressure foam makers can be used with various types of proportioning equipment including bladder tanks, balanced pressure pump proportioning systems, in-line balanced pressure proportioning systems, and foam trucks. Select from ANSUL fluroprotein and AFFF concentrates for subsurface injection.
The high back-pressure foam maker consists of a preassembled body, discharge tube, turbulator, and metering orifice. Fixed style foam makers are available in ten models (HBPFM) with nominal flow rates ranging from 100 to 550 gpm (379 to 2082 Lpm). Five portable models (HBPFM-P) with fire hose threads have nominal flow rates ranging from 100 to 300 gpm (379 to 1136 Lpm).
* The flammable liquid being protected must be a hydrocarbon product. Polar solvent flammable liquids or hydrocarbons containing more than 10% alcohol are destructive to subsurface injected foams. The storage tank protected should be of cone-roof construction without any type of internal floater. NFPA 11 does not recommend subsurface injection systems for open top or covered floating roof tanks because of the possibility of improper distribution of foam to the fuel surface.