ESFR DRY PENDENT SPRINKLER
VK512 K25.2 (GROOVED)
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
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Form No. F_071221 Rev 001 12.10.2021
New form.
After Installation:
1. The entire sprinkler system must be tested. The test must be conducted to comply with the Installation Standards. Make sure
the sprinkler has been properly tightened. Repair any leaks as necessary. Air testing the sprinkler piping prior to testing with
water may be considered in areas where leakage during testing must be prevented. Refer to the appropriate technical data and
the AHJ prior to air testing the sprinkler piping. Immediately replace any damaged units.
2. After installation and testing and repairing of all leaks, remove the protective shields from the sprinklers by hand.
Do NOT
use any type of tool to remove the shield. When removing shields, use care to prevent damaging sprinkler fusible element.
NOTICE: THE SHIELDS MUST BE REMOVED FROM SPRINKLERS BEFORE PLACING THE SYSTEM IN SERVICE!
3. System design must be based on ESFR design guidelines described in the latest standards and the Authorities Having
Jurisdiction. All requirements of recognized ESFR storage sprinkler system design standards apply to systems utilizing Viking
ESFR Dry Pendent Sprinklers.
6. OPERATION
During fire conditions, the heat-sensitive fusible element assembly disengages, releasing the internal parts to open the waterway.
Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern to suppress the fire.
7. INSPECTIONS, TESTS AND MAINTENANCE
NOTICE
The owner is responsible for maintaining the fire protection system and devices in proper operating condition. For
minimum maintenance and inspection requirements, refer to NFPA 25 or FM 2-81 for Inspection, Testing and Maintenance
requirements. In addition, the Authority Having Jurisdiction may have additional maintenance requirements that must be
followed.
A. The sprinklers must be inspected on a regular basis for corrosion, mechanical damage, obstructions, paint, etc. The frequency
of inspections may vary due to corrosive atmospheres, water supplies, and activity around the device.
B. Sprinklers that have been painted or mechanically damaged must be replaced immediately. Sprinklers showing signs of
corrosion shall be tested and/or replaced immediately as required. Installation standards require sprinklers to be tested and, if
necessary, replaced after a specified term of service. Refer to the installation standards and the Authority Having Jurisdiction
for the specified period of time after which testing and/or replacement is required. Sprinklers that have operated cannot be
reassembled or reused, but must be replaced. When replacing sprinklers, use only new sprinklers.
C. The sprinkler discharge pattern is critical for proper fire protection. Nothing should be hung from the sprinkler, attached to it, or
otherwise obstruct the discharge pattern. All obstructions must be immediately removed or, if necessary, additional sprinklers
installed.
D. When replacing existing sprinklers, the system must be removed from service. Refer to the appropriate system description
and/or valve instructions. Prior to removing the system from service, notify all Authorities Having Jurisdiction. Consideration
should be given to employment of a fire patrol in the affected area.
1. Remove the system from service, drain all water, and relieve all pressure on the piping.
2. Remove the ESFR dry sprinkler insulating boot assemblies.
3. Remove the old sprinkler and install the new unit. Care must be taken to ensure that the replacement sprinkler is the proper
model and style, with the correct orifice size, temperature rating, and response characteristics.
4. Install new ESFR dry sprinkler boot assemblies.
5. Place the system back in service and secure all valves. Check the replaced sprinklers and repair all leaks.
E. Sprinkler systems that have been subject to a fire must be returned to service as soon as possible. The entire system must be
inspected for damage and repaired or replaced as necessary. Sprinklers that have been exposed to corrosive products of combustion,
but have not operated, should be replaced. Refer to the Authorities Having Jurisdiction for minimum replacement requirements.
8. AVAILABILITY
Viking Sprinklers are available through a network of domestic and international distributors. See The Viking Corporation web site for
the closest distributor or contact The Viking Corporation.
9. GUARANTEE
For details of warranty, refer to Viking’s current list price schedule or contact Viking directly.
