Viking 12080 Service manual

ESFR PENDENT SPRINKLER
UL: SPECIFIC APPLICATION ESFR SPRINKLER
FM: STORAGE SPRINKLER
NFPA: SPECIAL SPRINKLER
VK510 (K25.2)
TECHNICAL BULLETIN
Page 1 of 7
Form No. F_121022 Rev 01 December 2022
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
1. DESCRIPTION
Viking Early Suppression Fast Response (ESFR) Pendent Sprinkler VK510
incorporates the capability to suppress specific high-challenge fires. The larger
K-Factor allows protection of higher hazard commodities at greater ceiling heights
with lower end-head pressures. K25.2 sprinklers can:
•Provide flexibility of fire protection designs.
•Reduce or eliminate the need for a system fire pump.
•Eliminate the use of in-rack sprinklers when protecting high piled storage of
certain specified materials up to:
UL (Refer to Table 4): 40 ft. (12,2 m) with ceilings up to 45 ft. (13,7 m)*
FM (Refer to Table 5):
45 ft. (13,7 m) with ceilings up to 50 ft. (15,2 m)*
NFPA 13 (Refer to Table 6): The VK510 is a Special Sprinkler as defined by
the National Fire Protection Association (NFPA 13, 2022 Ed.-Section 15.2).
Viking ESFR Pendent Sprinklers VK510 are primarily intended to protect the
following types of storage, which tend to produce severe-challenge fires: palletized
and solid pile storage as well as single, double, multiple, and portable open rack
storage (no open-top containers or solid shelves). The VK510 is listed to utilize a
minimum aisle width of 6’-0” (UL - 40’ storage or FM - 45’ storage).
Viking ESFR Pendent Sprinklers VK510 provide protection of most common
storage materials, including:
•Encapsulated or unencapsulated Class I, II, III, and IV commodities*.
•cULus Listed for protection of cartoned nonexpanded** Group A plastic
commodities*.
•FM Approved for protection of cartoned unexpanded** plastic commodities.*
*Refer the Approval Chart and Commodity Selection and Design Criteria Overview for Listing
and Approval requirements that must be followed.
**The terms nonexpanded and unexpanded are equivalent.
2. LISTINGS AND APPROVALS*
cULus Listed: Category VNWH (Listed as a Specific Application ESFR
Sprinkler)
FM Approved: Class 2026
VdS Approved: Certificate G4040015
LPCB Approved: Ref. No. 096g/01
China Approval: Approved according to China GB Standard
*Refer the Approval Chart and Commodity Selection and Design Criteria Overview for Listing and Approval requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Maximum Working Pressure: 175 psi (12 bar). Factory tested hydrostatically to 500 psi (34.5 bar).
Thread size: 1” NPT or 25 mm BSPT (Refer to Table 2)
Nominal K-factor: 25.2 U.S. (363 metric*)
* Metric K-factor measurement shown is in bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
Overall Length: 3-3/16” (81 mm)
Deflector Diameter: 1-3/4” (45 mm)
Material Standards:
Frame Casting: Brass UNS-C84400
Deflector: Phosphor Bronze UNS-C51000
Seat: Copper UNS-C11000 and Stainless Steel UNS-S30400
Belleville Spring Sealing Assembly:
Nickel Alloy, coated on both sides with PTFE Tape
TABLE 1
SPRINKLER GENERAL INFORMATION
Item Description
Sprinkler Identification
Number (SIN) VK510
K-factor, gpm/psi½(lpm/bar½)25.2 (363)
Thread Size 1” NPT (25 mm)
Sprinkler Orientation Pendent
Maximum Working Pressure 175 psi (12 bar)


ESFR PENDENT SPRINKLER
UL: SPECIFIC APPLICATION ESFR SPRINKLER
FM: STORAGE SPRINKLER
NFPA: SPECIAL SPRINKLER
VK510 (K25.2)
TECHNICAL BULLETIN
Page 2 of 7
Form No. F_121022 Rev 01 December 2022
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
Compression Screw: Stainless Steel UNS-S31603
Trigger and Support: Stainless Steel UNS-S31600
Fusible Element Assembly: Beryllium nickel coated with black acrylic paint.
Ordering Information: Refer to Table 2
4. INSTALLATION
NOTICE
Viking sprinklers are manufactured and tested to meet rigid requirements of the approving agencies. The sprinklers are designed
to be installed in accordance with recognized installation standards or FM Global Loss Prevention Data Sheets. System design
must be based on guidelines described in the latest edition of the applicable FM Global Loss Prevention Data Sheets indicated for
Storage sprinklers, the latest NFPA Standards indicated for ESFR sprinklers, the Authority Having Jurisdiction, and also with the
provisions of government codes, ordinances, and standards whenever applicable. Deviation from the standards or any alteration
to the sprinkler after it leaves the factory including, but not limited to: painting, plating, coating, or modification, may render the
sprinkler inoperative and will automatically nullify the approval and any guarantee made by The Viking Corporation.
A. Sprinklers must be handled with care. They must be stored in a cool, dry place in their original shipping container. Never install
sprinklers that have been dropped or damaged in any way. Such sprinklers should be destroyed immediately.
B. The sprinklers must be installed after the piping is in place to prevent mechanical damage. Before installing, be sure to have the
appropriate sprinkler model and style, with the correct orifice size, temperature rating, and response characteristics.
C. With the sprinkler contained in the plastic protective cap, apply a small amount of pipe-joint compound or tape to the male threads
only, while taking care not to allow a build-up of compound in the sprinkler orifice.
D. Use ONLY sprinkler wrench 13635W/B (shown in Figure 1) for installing VK510. With the sprinkler contained in the
protective cap, install the sprinkler onto the piping by applying the sprinkler wrench to the sprinkler wrench flats only,
while taking care not to damage the sprinkler operating parts.
• DO NOT use any other type of wrench, as this could damage the unit.
• DO NOT use the sprinkler deflector or fusible element to start or thread the sprinkler into a fitting.
• DO NOT exceep 30 ft. lbs. of torque (hand tight plus approximately 1 to 1-1/2 turns with the wrench) to install these sprinklers.
Over tightening may distort the sprinkler inlet with consequent leakage or impairment of the sprinkler.
E. After installation, 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. If a thread leak occurs, normally the unit must be removed, new
pipe-joint compound or tape applied, and then reinstalled. This is due to the fact that when the joint seal is damaged, the sealing
compound or tape is washed out of the joint. Immediately replace any damaged units, using the special sprinkler wrench only.
F. After installation and testing and repairing of all leaks, remove the protective caps from the sprinklers. Do NOT use
any type of tool to remove the cap. Remove the cap by hand: turn it slightly and pull it off the sprinkler. When remov-
ing caps, use care to prevent dislodging or damaging sprinkler fusible element. THE CAPS MUST BE REMOVED FROM
SPRINKLERS BEFORE PLACING THE SYSTEM IN SERVICE.
5. OPERATION
During fire conditions, the heat-sensitive fusible element assembly disengages, releasing the seat and belleville spring assembly
to open the waterway. Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern to
suppress the fire.
6. 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 the NFPA standard that describes care and maintenance of
sprinkler systems. In addition, the Authorities Having Jurisdiction may have additional maintenance, testing, and inspec-
tion requirements that must be followed.
NOTE:Wet pipe systems must be provided with adequate heat.
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 atmosphere, 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, re-

ESFR PENDENT SPRINKLER
UL: SPECIFIC APPLICATION ESFR SPRINKLER
FM: STORAGE SPRINKLER
NFPA: SPECIAL SPRINKLER
VK510 (K25.2)
TECHNICAL BULLETIN
Page 3 of 7
Form No. F_121022 Rev 01 December 2022
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
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.

ESFR PENDENT SPRINKLER
UL: SPECIFIC APPLICATION ESFR SPRINKLER
FM: STORAGE SPRINKLER
NFPA: SPECIAL SPRINKLER
VK510 (K25.2)
TECHNICAL BULLETIN
Page 4 of 7
Form No. F_121022 Rev 01 December 2022
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
TABLE 2: ORDERING INFORMATION
Instructions: Using the sprinkler base part number,
(1) add the suffix for the desired Finish
(2) add the suffix for the desired Temperature Rating.
Sprinkler
Base Part
No.
Size 1: Finishes 2: Temperature Ratings1
NPT
Inch
BSPT
mm Description Suffix Nominal
Rating
Frame
Paint
Color
Temperature
Classification
Max. Ambient Ceiling
Temperature2Suffix
12080 1 -- Brass A 165 °F (74 °C) None Ordinary 100 °F (38 °C) C
12200 -- 25 205 °F (96 °C) White Intermediate 150 °F (65 °C) E
20373 -- 25 Example: 12080AC = VK510 with Brass Finish and 165 °F (74 °C) Nominal temperature
rating. This sprinkler is to be installed into an area with a maximum ambient tempe-
rature of 100 °F (38 °C) meaning if the area will experience temperatures above the
maximum ambient rating, you shall use a higher temperature-rated sprinkler.
Accessories
Sprinkler Wrenches (see Figure 1):
Standard Wrench: Part No. 13635W/B (double-ended wrench - Use Side B ONLY.)
Sprinkler Cabinet:
Up to 6 sprinklers: Part number 01731A
Footnotes
1. The sprinkler temperature rating is stamped on the deflector.
2. Based on NFPA 13, NFPA 13R, and NFPA 13D. Other limits may apply, depending on fire loading, sprinkler location, and other requirements of the Authority Having
Jurisdiction. Refer to specific installation standards.

ESFR PENDENT SPRINKLER
UL: SPECIFIC APPLICATION ESFR SPRINKLER
FM: STORAGE SPRINKLER
NFPA: SPECIAL SPRINKLER
VK510 (K25.2)
TECHNICAL BULLETIN
Page 5 of 7
Form No. F_121022 Rev 01 December 2022
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
Approval Chart
ESFR Pendent Sprinkler VK510
Maximum 175 PSI (12 bar) WWP
Base Part
Number1SIN Thread Size
Nominal K-Factor Overall Length Listings and Approvals3,4,6
(Refer also to Tables 3 and 4.)
U.S. metric2Inches mm cULus5NYC VDS LPCB FM6China
Approval
12080 VK510 1” NPT 25.2 363 3-3/16 81 A1 See Footnote7. A1 A1 A1 --
12200 VK510 25 mm BSPT 25.2 363 3-3/16 81 A1 See Footnote 7. A1 A1 A1 --
203738VK510 1” NPT 25.2 363 3-3/16 81 B1 -- -- -- B1 B1
Approved Temperature Ratings
A - 165 °F (74 °C) and 205 °F (96 °C)
B - 165 °F (74 °C)
Approved Finish
1 - Brass
Footnotes
1. Base part number shown. For complete part number, refer to the price list.
2. Metric K-Factor measurement shown is when pressure is measured in bar. When pressure is measured in kPa, divide the metric K-Factor shown by 10.0.
3. This chart shows listings and approvals available at the time of printing. Other approvals may be in process.
4. Refer to the latest standards of NFPA 13, FM Global Loss Prevention Data Sheets, LPCB Loss Prevention Standards, and the latest VdS standards.
5. Listed by Underwriters Laboratories Inc. for use in the U.S. and Canada as a Specific Application ESFR Sprinkler (refer to the deflector position requirements).
6. FM Approved as a quick response pendent Storage sprinkler. Refer toTables 3 & 5.
7. Meets New York City requirements, effective July 1, 2008.
8. Approved according to China GB Standard.
Protective Sprinkler
Cap
Wrench Flat
Use Side B Only
Figure 1: Sprinkler Wrench Figure 2: Sprinkler Dimensions
Dimensions are
approximate.
3-3/16”
(81 mm)
1-9/16”
(40 mm)
1-5/8”
(42 mm)
1-3/4”
(45 mm)

ESFR PENDENT SPRINKLER
UL: SPECIFIC APPLICATION ESFR SPRINKLER
FM: STORAGE SPRINKLER
NFPA: SPECIAL SPRINKLER
VK510 (K25.2)
TECHNICAL BULLETIN
Page 6 of 7
Form No. F_121022 Rev 01 December 2022
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
TABLE 4:
COMMODITY SELECTION AND DESIGN CRITERIA OVERVIEW FOR
UL SPECIFIC APPLICATION VK510
Description 45 ft. (14.6 m) Ceilings
Sprinkler Type ESFR
Temperature Rating 165 ºF (74 ºC) and 205 ºF (96 ºC)
Response Type ESFR
Sprinkler Position Pendent, frame arms aligned with pipe, deflectors parallel with ceiling or roof
System Type Wet Pipe System only
Maximum Area of Coverage 100 ft2 (9,3 m2)
Minimum Area of Coverage 64 ft2 (5,9 m2)
Maximum Ceiling Slope 2 in 12
Maximum Spacing 10 ft. spacing (3,0 m)
Minimum Spacing 8 ft. spacing (2,4 m)
Deflector Distance from Walls Minimum of 4 in. (102 mm) from walls but no more than 1/2 the allowable distance permitted between
sprinklers
Deflector to Top of Storage Minimum of 36 in. (914 mm)
Deflector to Ceiling Distance
Ceiling/roof heights up to 40 ft. (12,2 m):
6-18 in. (152-457 mm)
Ceiling/roof heights of 40-45 ft. (12,2-13,7 m):
6-14 in. (152-356 mm)
Maximum Ceiling Height 45 ft. (13,7 m)
Maximum Storage Height 40 ft. (12,2 m)
Storage Arrangement Palletized, solid piled, open frame; single row, double row, or multiple row and portable rack arrangement
Commodity Class I-IV, Cartoned unexpanded plastic
Sprinkler System Design Refer to NFPA 13.
Obstruction Critera Refer to NFPA 13 Chapter 14.
Minimum Aisle Width Refer to NFPA 13.
Hose Stream Allowance and
Water Supply Duration 250 gpm (946 lpm) for 60 minutes or as determined by the listing
* The maximum coverage area must not exceed 100 ft2 (9,29 m2).
TABLE 5:
DESIGN CRITERIA FOR
FM STORAGE SPRINKLER VK510
Refer to the most current editions of FM Data Sheets 2-0 and 8-9
for the VK510 FM Storage Sprinkler design criteria.

ESFR PENDENT SPRINKLER
UL: SPECIFIC APPLICATION ESFR SPRINKLER
FM: STORAGE SPRINKLER
NFPA: SPECIAL SPRINKLER
VK510 (K25.2)
TECHNICAL BULLETIN
Page 7 of 7
Form No. F_121022 Rev 01 December 2022
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
TABLE 6:
COMMODITY SELECTION AND DESIGN CRITERIA OVERVIEW FOR
NFPA 13 SPECIAL SPRINKLER VK510
Description 50 Ft. (15,2 m) Ceilings
Sprinkler Type QR Storage**
Temperature Rating 165 ºF (74 ºC) and 205 ºF (96 ºC)
Response Type QR
Sprinkler Position Pendent, frame arms aligned with pipe, deflectors parallel to floor.
System Type Wet Pipe System only
Maximum Area of Coverage* 100 ft2(9,29m2)
Refer to FM 2-0, Table 17
Minimum Area of Coverage 64 ft2(5,9 m2)
Refer to FM 2-0, Table 17
Maximum Ceiling Slope 10° slope
Refer to FM 2-0, Section 2.2.1.6
Maximum Spacing 10 ft. spacing (3,0 m)
Minimum Spacing 8 ft. spacing (2,4 m)
Deflector Distance from Walls Minimum of 4 in. (102 mm) from walls but no more than 1/2 the allowable distance permitted between sprinklers
Deflector to Top of Storage Minimum of 36 inches (914 mm)
Deflector** to Ceiling Distance Refer to FM 8-9 or FM 2-0
Maximum Ceiling Height 50 ft. (15,2 m)
Maximum Storage Height 45 ft. (13,5 m)
Storage Arrangement Single, double, and multiple row racks
Storage Aisles Between Racks Minimum 6 ft (1,8 m) wide
Commodity Class I-IV, Cartoned unexpanded plastics
Sprinkler System Design Refer to FM 8-9
Obstruction Criteria Refer to FM 2-0
Hose Stream Allowance and
Water Supply Duration 250 gpm (950 Lpm) for 60 minutes or as determined by the approval
* The maximum coverage area must not exceed 100 ft2(9,29 m2).
** For FM, the measurement is from the centerline of the thermal sensing element to the ceiling.
*** Approved storage sprinklers are also FM Approved for use as non-storage sprinklers.