Foam Water Sprinkler

Model: E1, EH
Orientation: Pendant
K-factor: 42 (2.94)
Thread: 1/2” NPT / BSPT
Maximum Working Pressure: 175 psi (12 bar)
Minimum Operating Pressure: 30 psi (2.1 bar)
Material: Bronze, Stainless Steel
Finish: Natural Finish
Standard: NFPA 13, NFPA 16
Approval: UL Listed & FM Approved
View technical datasheet for more information

EMACO Foam-Water Sprinkler is an open type discharge equipment used in foam-water fire protection systems. It is commonly installed in foam deluge systems where low-expansion foam is applied from overhead sprinklers.

Unlike conventional water sprinklers, it sprays foam solution instead of water as its extinguishing agent. The sprinkler is connected to a foam proportioning system that mixes water and foam concentrate before it enters the piping network. Once the system activates, the foam solution is discharged through the sprinkler. As the foam solution is discharged, it mixes with air and forms expanded firefighting foam. The foam then spreads across the protected area and forms a blanket over it. This blanket suppresses flammable vapours and cuts off oxygen from the fuel, which helps to extinguish the fire and reduce the chance of re-ignition.

Foam-water sprinklers are typically used in deluge foam systems designed according to NFPA 13 and NFPA 16. They are commonly installed in areas where Class B fires, such as flammable liquid and fuel fire is a risk.

Typical applications include:

Aircraft hangars
Fuel handling areas
Warehouses storing flammable liquids
Petrochemical facilities
Industrial processing areas

These sprinklers discharge in a spray pattern similar to a normal sprinkler head but are designed specifically for foam-water systems. The pattern allows it to distribute foam evenly over the protected area.

Design Specifications:

1/2″ NPT / BSPT threaded connection
Open type air-aspirating foam discharge outlet
Standard K-factor 42
Standard coverage area of 100 sq. ft.
Ideal operating pressure range between 30 psi (2.1 bar) and 60 psi (4.2 bar)
Maximum working pressure 12 bar (175 psi)
Bronze or stainless steel construction with natural finish
Designed for installation in foam-water systems following NFPA 13 and NFPA 16
UL Listed and FM Approved Foam Water Sprinkler

How does the EMACO Foam Water Sprinkler differ from a standard sprinkler?

Unlike standard sprinklers that activate individually when heat melts the thermal element, the EMACO Foam Water Sprinkler is an open-type sprinkler used in a deluge system. This means all sprinklers discharge foam-water simultaneously when the system is triggered. It is specifically engineered to deliver foam-water mixture for Class B hazards, providing rapid vapor suppression and wide-area coverage.

What type of fires is this sprinkler designed for?

The sprinkler is designed primarily for flammable liquid fires (Class B) such as fuel, chemicals, solvents, and hydrocarbons. When combined with foam-water solution, it effectively cools the fire area, suppresses vapors, and forms a foam blanket to prevent re-ignition. It can also provide cooling support in mixed-risk areas containing both Class A and Class B materials.

Can the Foam Water Sprinkler be installed in harsh industrial environments?

Yes. The sprinkler is available in corrosion-resistant brass and stainless-steel materials, making it suitable for coastal areas, chemical plants, offshore platforms, and high-humidity zones. For long-term durability, stainless steel is recommended in highly corrosive environments.

Does it require frequent maintenance?

Maintenance is typically low, but regular inspections are essential. The nozzle must remain free of obstructions to maintain consistent discharge patterns. Annual system testing should be performed to ensure proper deluge activation, foam mixing accuracy, and full spray coverage. Periodic cleaning and checking for corrosion significantly extend the sprinkler’s lifespan.

How long does a Foam Water Sprinkler last before replacement is needed?

With proper care, the sprinkler can remain functional for 10–15 years or more. Replacement is usually only required when there is visible corrosion, mechanical damage, clogging, or after system upgrades. Environments with heavy chemical exposure or saltwater humidity may require more frequent inspections to ensure optimal performance.

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