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NuFlow 7000 Epoxy Lining for Fire Suppression Systems

NuFlow 7000 epoxy is listed by the International Code Council Evaluation Service (ICC-ES PMG-1532) for lining existing fire sprinkler systems in all residential and commercial applications.

NuFlow’s 7000 epoxy restores a wide range of pressurized water systems, including fire suppression systems. Fire sprinklers that are at risk for leaks or blockages can be safely and quickly lined with NuFlow 7000 rather than incurring the expense ad inconvenience associated with pipe replacement.

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The most common fire suppression systems are made of black steel and copper in the U.S., making the sprinklers are highly susceptible to galvanized corrosion, Microbiologically Influenced Corrosion (MIC), air pockets and leakage, all of which instigate these water-related fire sprinkler failures and ineffectiveness.

Fire sprinklers that are at risk for leaks, blockages or corrosion can be safely and quickly lined with NuFlow 7000 rather than incurring the expense and inconvenience associated with replacement. A proven-safe epoxy is blown into the pipe with a proprietary technique that coats the pipe interior, a process that has been utilized for decades in potable water applications.

Lining Process For
Fire Spinkler Systems

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1

Pipe system diagnosis and set-up

The existing pipe system is inspected for integrity and spot repairs on excessively worn joints and fittings. Valves are removed, and their locations temporarily fitted with unions and/or couplings that remain through the restoration sequence. Sitting water is drained from the pipe system and air is introduced into the system to test for leaks. Temporary bypass water piping provisions are installed as necessary.

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2

Pipe cleaning

Pipe runs are dried with heated, compressed air. Pipes are cleaned with an abrading agent. The debris from cleaning is gathered in a collection unit. Air is then again sent through the pipes to remove any residual debris.

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3

Pipe coating

An air pressure leak test is done prior to coating. Pipe system is reheated. Conditioned air is used to evenly distribute epoxy throughout piping segment. Continuous air is sent through the pipes to facilitate epoxy curing.

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4

System re-assembly and evaluation

After curing, all valves and fittings are returned. A final leak test is performed. Water pressure, volume and flow are tested. An even coat of epoxy now serves as a barrier between substances and pipe.

Benefits of Lining Fire
Sprinkler Systems

Corrosion in sprinkler systems increases the life-cycle costs of fire protection, especially when pipe replacement is involved. However, if the fire suppression systems incorporate sprinkler rehabilitation and cleaning routinely in their maintenance, the success rate of fire sprinkler operations will rise, the fire protection process will become more proactive, and the overall costs of in-building fire prevention will decrease.

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NuFlow 7000 for Fire
Suppression Systems

Can be installed from existing connection points to the pipe system

Prevents pinhole leaks

Smooth finish increases flow efficiency

MIC and corrosion prevention*

Tested at 1400°F

*NFPA 13 Standard of Installation of Sprinkler Systems 2016, entry 7.10.2 and 8.16.4.2.3.

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NuLine in-place pipe coating is an extremely effective pressurized water pipe rehabilitation solution, and it holds significant advantages for fire suppression systems.

  • Listed by the International Code Council Evaluation Service (ICC-ES) for use in lining fire sprinkler systems in all residential and commercial applications.
  • In-place pipe coating costs at least 50% less than the pipe replacement.
  • Internal pipe coatings are referred in the NFPA 13 code book (2016) for MIC and corrosion control.*
  • Before coating starts, sprinklers will be inspected and cleaned to remove the blockages and tuberculation caused by corrosion and MIC.
  • Epoxy coating effectively controls future pinhole leaks, corrosion and MIC by preventing metals from contacting water and oxygen.
  • In-place pipe coating causes very little disruption, if any, to building and facility operation.
  • In-place pipe coating is a long-term solution that will extend the useful life of existing sprinkler systems.

*In NFPA 13 Standard of Installation of Sprinkler Systems 2016, entry 7.10.2 states “Internal pipe coatings, excluding galvanizing, intended for control of microbiological or other corrosion shall be listed for use within fire sprinkler systems.” And entry 8.16.4.2.3 states “Where corrosive conditions exist, or piping is exposed to the weather, corrosion-resistant types of pipe, fittings, and hangers or protective corrosion-resistant coatings shall be used.”

Certified for Fire Suppression Systems by International Code Council Evaluation Service

The NuFlow 7000 epoxy has been listed by the International Code Council Evaluation Service (ICC-ES) for lining existing fire sprinkler systems in all residential and commercial applications. Fire sprinklers that are at risk for leaks or blockages can be safely and quickly lined with NuFlow 7000 rather than incurring the expense and inconvenience associated with replacement. The NuFlow 7000 epoxy, listed as PMG-1532, is the only product recognized by ICC-ES for application on copper, black steel or galvanized sprinkler pipe from 1/2 inch to 12 inches in diameter. The ICC Fire Suppression listing process included testing samples and an assessment of NuFlow’s quality system to ensure compliance with leading plumbing and mechanical codes and standards. This includes applicable sections of the International Fire Code®, International Building Code®, Uniform Plumbing Code®, as well as compliance with ASTM F2831-2019, ASTM D4541-2017 and ANSI/AWWA C210-2015, among others.

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During testing the epoxy was subjected to extreme conditions in order to simulate conditions a sprinkler system may encounter, including temperatures ranging from 400 F to -20 F. Additional IFC testing exceeded 1,600 F with no indication of leaking, cracking, flaking or other deformation in the lining material found. NuFlow 7000 is manufactured in compliance with the ISO 9001:2015 Quality Management System (QMS) to ensure consistent quality now and in the future.

While approvals from local fire officials are required before any fire sprinkler lining process can begin, fire marshals in multiple jurisdictions have already expressed interest in NuFlow 7000, and rapid approvals are anticipated for buildings needing to rehabilitate their sprinkler systems.

Pipe Lining vs. Pipe Replacement

Pipe Replacement

Pipe Rehabilitation Solution

Fire Suppression System
Case Studies

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