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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
placed after a specified term of service. For Viking ESFR Pendent Sprinklers, refer to the Installation Standards and the Authorities
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. Therefore, nothing should be hung from, attached to, or other-
wise 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.
E. Remove the system from service, drain all water, and relieve all pressure on the piping.
F. Using the special sprinkler wrench, remove the old sprinkler and install the new unit. Care must be taken to ensure that the re-
placement sprinkler is the proper model and style, with the correct orifice size, temperature rating, and response characteristics.
A fully stocked spare sprinkler cabinet should be provided for this purpose.
G. Place the system back in service and secure all valves. Check the replaced sprinklers and repair all leaks.
H. 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.
7. AVAILABILITY
The Viking Model VK510 Sprinkler is available through a network of domestic and international distributors. See The Viking
Corporation web site for the closest distributor or contact The Viking Corporation.
8. GUARANTEE
For details of warranty, refer to Viking's current list price schedule or contact Viking directly.
Form No. F_121022
Rev 01
TECHNICAL BULLETIN
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
December 2022
ESFR PENDENT SPRINKLER
UL: SPECIFIC APPLICATION ESFR SPRINKLER
FM: STORAGE SPRINKLER
NFPA: SPECIAL SPRINKLER
VK510 (K25.2)
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