Quick, Easy, Accurate and Independent Fire Sprinkler Head Testing

NFPA 25 requires building owners to have a sample of the installed sprinklers tested by a recognized testing lab.  Dyne Technologies offers free test kits and 5-business day turnaround on test results for an easy and convenient way to ensure that your sprinklers are staying in compliance.

Dyne Offers

  • free standard size sprinkler head test kit with free shipping within the continental (lower 48) United States. A kit contains four sprinkler head labeling bands, foam packing material with room for four standard size sprinkler heads (larger heads will need to be packed by the customer), and a return UPS label
  • dry sprinkler head test kits 

    Dry Sprinkler Head Kits contain packaging and paperwork for 1 dry sprinkler head. Adjustable sized kits available. Shipping is paid by Dyne to customers within the continental (lower 48) United States, customer is responsible for the shipping cost back to Dyne (any return shipping charged to Dyne will be added to your invoice)
    Small: holds one (1) dry sprinkler head up to 20", $10 each
    Large: holds one (1) dry sprinkler head up to 21" to 42", $12 each

  • test reports in 5-business days guaranteed
  • rush 1-business day turnaround available, please call ahead
  • online return form (print also available)
  • comprehensive reports
  • system tags
  • online access to results and forms
  • immediate communication with testing lab staff


State-of-the-art Sprinkler Test Tunnel
What to Test

NFPA 25 Standard for the Inspection, Testing, and Maintenance of Water Based Systems. 2017 Edition

NFPA 25 section states “a representative sample of the sprinklers in a system should consist of a minimum of 4 sprinklers or 1% of the number of sprinklers per individual sprinkler sample, whichever is greater.”

NFPA 25 Annex A states "As applied to the definition of a sprinkler system, each system riser serving a portion of a single floor of a facility or where individual floor control valves are used in a multistory building should be considered a separate sprinkler system. Multiple sprinkler systems can be supplied by a common supply main."

When to Test

NFPA 25 Section 5.3.1 Testing Sprinklers, makes the following recommendations for when to either test or replace sprinkler heads installed in systems.

Sprinkler Detail

First-Time Test Requirement

Subsequent Test Requirement

Standard Heads

After 50 Years in service

Every 10 Years and at 75 years in service and every 5 years thereafter

Manufactured prior to 1920

Must Be Replaced

Must Be Replaced

Manufactured Using Quick-Response Elements

After 20 Years in service

Every 10 Years

Solder type sprinklers with a temperature classification of extra high (325° F, 163° C) or greater that are exposed to semi continuous to continuous maximum allowable ambient temperature conditions

After 5 Years in service

Every 5 Years

Dry Sprinklers

After 10 Years in service

Every 10 years

Sprinklers exposed to harsh environments, including corrosive atmospheres and corrosive water supplies

After 5 Years in Service

Every 5 Years

Dyne performs both a visual inspection in addition to subjecting the sprinkler head to a plunge oven test to determine the release time. This test is designed to ensure the sprinkler head will release in a specified time when exposed to a specified temperature. As required by Underwriters Laboratory 199, International Standards Organization  6182-1, and Factory Mutual Class Number 2000, the Response Time Index (RTI) value (meter/second)1/2 between 80 and 350 is required for a standard sprinkler while a maximum value of 50 is required for a quick response head. If one of the heads in a system is determined to fail the test requirements, all the heads will need to be replaced.

  • NFPA 25: Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems

Using RTI values from: 

  • UL 199: Standard for Automatic Sprinklers for Fire-Protection Service
  • FM 2000: Automatic Control Mode Sprinklers for Fire Protection
  • ISO 6182-1: 2014 Fire protection -- Automatic sprinkler systems -- Part 1: Requirements and test methods for sprinklers