Nullifire FS709 HP Intumescent Sealant and the iMist™ STH12 hose: A Key Innovation

The iMist™ STH12 stainless steel flexible hose, a key component of the iMist™ STX12 Fire Suppression System, is part of a cutting-edge watermist fire suppression solution that delivers superior flexibility, installation convenience, and reduced costs compared to traditional CPVC piped sprinkler systems. This next-generation alternative is ideal for new builds and retrofits, offering fast installation, water-saving benefits and minimum disruption.

The iMist™ STH12 hose, has been tested by warringtonfire in accordance with BS EN 1366-3:2021 and BS EN 1363-1:2020 (see Report No: WF 529380). When used in conjunction with Nullifire FS709 HP Intumescent Sealant as shown in the Tremco iMist Detail 10.07.24, the iMist™ STH12 hose offers up to 60 minutes of fire resistance (EI 60,) providing exceptional fire safety for a wide range of applications

Nullifire FS709 HP Intumescent Sealant and the iMist™ STH12 hose: A Key Innovation

A core associated component used with the iMist™ STH12 hose is Nullifire FS709 HP Intumescent Sealant, this sealant plays a critical role in maintaining the fire-resisting integrity of fire that the iMist™ hose passes through.  

With its high-performance properties, the Nullifire FS709 HP Intumescent Sealant creates an effective resisting seal between the iMist™ STH12 hose and the building structure. The Nullifire FS709 HP Intumescent Sealant is crucial for ensuring that the iMist™ system performs consistently in real-world conditions, delivering reliable fire suppression when it’s needed most.

The combination of the Nullifire FS709 HP Intumescent sealant and the flexible design of the iMist™ STH12 flexible hose makes the iMist™ system ideal for complex or challenging architectural spaces, providing a reliable and cost-effective fire suppression solution.

Key Features and Benefits:

• Cost Efficiency: The greatly reduced time required for the iMist™ STH12 flexible hose system makes it a more affordable fire suppression pipework solution than traditional CPVC pipework systems as it offers significant savings in installation cost.

• Flexible Installation: The flexibility of the iMist™ STH12 flexible hose simplifies installation in difficult spaces and eliminates the need for on-site cutting, assembly and glueing, making it a perfect choice for retrofits, historic buildings and complex architectural designs.

• Reduced Water Usage: Operating with 80% less water than conventional sprinkler systems, the iMist™ system minimizes water damage while maintaining effective fire suppression performance.

• High-Performance Fire Resistance: The iMist™ STH12 provides up to 60 minutes fire resistance when used in conjunction with Nullifire FS709 HP Intumescent Sealant, this ensures the iMist™ STX12 system delivers maximum protection for both new construction and retrofit projects.

By offering a smarter, more practical alternative to CPVC, the iMist™ STH12 hose, combined with the Nullifire FS709 HP Intumescent Sealant, sets a new benchmark for fire compliant sprinkler systems. Whether used in new builds or retrofits, the iMist™ STX12 system is reshaping fire protection.

Find out more about the Nullifire FS709 HP Intumescent Sealant here: FS709 HP Intumescent Sealant | Nullifire UK