Viking VK478 Technical Data Manual
  1. Manuals
  2. Brands
  3. Viking Manuals
  4. Irrigation System
  5. VK478
  6. Technical data manual
Viking VK478 Technical Data Manual

Viking VK478 Technical Data Manual

Quick response flush pendent sprinkler k5.6
Hide thumbs

Advertisement

Table of Contents

Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
1. DESCRIPTION
Viking Quick Response Flush Pendent Sprinkler VK478 is a small high-sensitivity
fusible element sprinkler that is designed for concealed pipe systems where the
appearance of a smooth ceiling is desired.
The two-piece design of the sprinkler and ceiling ring allows for sprinkler installation
and testing prior to ceiling installation. The ceiling ring allows up to 5/8" (16 mm)
of vertical adjustment and can be removed and re-installed, giving access above
removable ceiling panels without shutting down the sprinkler system and remov-
ing the sprinkler.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
UKCA Approved: Standard EN 12259-1; Certificate Number 0832-UKCA-
CPR-S5030; UKCA DOC_S5030; 2021
LPCB Approved
NOTE: Refer to the Approval Chart and Design Criteria on page 3 for cULus Listing requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Available since 2016.
Minimum Operating Pressure: 7 PSI (0.5 bar)
Maximum Working Pressure: 175 PSI (12 bar).
Factory-tested hydrostatically to 500 PSI (34.5 bar).
Thread size: 1/2" NPT (15 mm BSP)
Nominal K-Factor: 5.6 U.S. (80.6 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: 2-1/8" (54 mm)
Material Standards:
Sprinkler Body: Brass UNS-C84400
Sprinkler Inlet: QM brass or brass UNS-C84400
Deflector Assembly: Copper UNS-C51000
Pin Assembly: Stainless steel UNS-S30200, C23000, and brass C36000
Seat Assembly: Brass UNS-C31400 or UNS-C31600
Belleville Spring Sealing Assembly: Nickel alloy, coated on both sides with PTFE tape
Fusible Element Assembly: Beryllium nickel and eutectic solder
Element Cover: Copper UNS-C11000
Lever Bar Assembly: Copper alloy UNS-C72500 and brass UNS-C36000
Lever Arm: Stainless Steel UNS-S31600
Element Assembly: Copper UNS-C11000 and nickel alloy
Ceiling Ring: Cold rolled steel UNS-G10080
Ordering Information: (Also refer to the current Viking price list.)
Order Quick Response Flush Pendent Sprinkler VK478 by first adding the appropriate suffix for the sprinkler and ceiling ring finish
and then the appropriate suffix for the temperature rating to the sprinkler base part number.
Finish Suffix: Painted white = M-/W, RAL9010 (pure white) = M-/RAL9010
Temperature Suffix: 165ºF (74ºC) = C and 205ºF (96ºC) = E
For example, sprinkler VK478 with a painted white finish and a 165ºF (74ºC) temperature rating = 19995MC/W.
(Includes protective plastic cap covering the unit, and a ceiling ring)
Available Finishes And Temperature Ratings: Refer to Table 1.
Form No. F_042612
Rev 01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Visit the Viking website for the latest edition of this technical data page.
October 2023
QUICK RESPONSE
FLUSH PENDENT
SPRINKLER VK478 (K5.6)
Replaces Form No. F_042612 Rev 18.P65
(Added UKCA approval throughout.)
Page 1 of 4

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the VK478 and is the answer not in the manual?

Questions and answers

Related Manuals for Viking VK478

Summary of Contents for Viking VK478

  • Page 1 Ordering Information: (Also refer to the current Viking price list.) Order Quick Response Flush Pendent Sprinkler VK478 by first adding the appropriate suffix for the sprinkler and ceiling ring finish and then the appropriate suffix for the temperature rating to the sprinkler base part number.

  • Page 2: Technical Data

    Based on NFPA-13. Other limits may apply, depending on fire loading, sprinkler location, and other requirements of the Authority Having Jurisdiction. Refer to specific installation standards. Part number shown is the base part number for replacement ceiling rings. For complete part number, refer to current Viking price list schedule. Form No. F_042612...
  • Page 3 (Also refer to the Approval Chart above.) cULus Listing Requirements: Quick Response Flush Pendent Sprinkler VK478 is cULus Listed for installation in accordance with the latest edition of NFPA 13 for standard coverage pendent spray sprinklers as indicated below: For hazard occupancies up to and including Ordinary Hazard, Group II according to NFPA.
  • Page 4 SPRINKLER VK478 (K5.6) 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. 2-1/8” (54 mm) Diameter...
  • Page 5 Refer to the appropriate technical data page and NFPA standards for complete care, handling, installation, and maintenance instructions. For additional product and system information Viking data pages and installation instructions are available on the Viking Web site at www.vikinggroupinc.com.
  • Page 6 * Refer to the appropriate current technical data pages for complete care, handling, and installation instructions. Data pages are included with each shipment from Viking or Viking distributors. They can also be found on the Web site at www. vikinggroupinc.com.
  • Page 7 • while ceiling finish work is being completed. Use only the designated Viking recessed sprinkler wrench (refer to the appropriate sprinkler data page) to install these sprinklers. NOTE: The protective cap is • temporarily removed during installation and then placed back on the sprinkler for protection until finish work is completed.
  • Page 8 Take care not to crack the wax coating on the units. • For touching up the wax coating after installation, wax is available from Viking in bar form. Refer to Table 1 below. The coating MUST be repaired after •...

  • Page 9: Listings And Approvals

    1. DESCRIPTION Viking fire sprinklers consist of a threaded frame with a specific waterway or orifice size and a deflector for distributing water in a specified pattern. A closed or sealed sprinkler refers to a complete assembly, including the thermosensitive operating element. An open sprinkler does not use an operating element and is open at all times.
  • Page 10 TECHNICAL DATA SPRINKLER OVERVIEW 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 VERTICAL SIDEWALL (VSW) SPRINKLER: A sprinkler intended for installation near the wall and ceiling. The deflector provides a water spray pattern outward in a quarter-spherical pattern and can be installed in the upright or pendent position with the flow arrow in the direction of discharge.
  • Page 11 Refer to NFPA 25 for Inspection, Testing and Maintenance requirements. 7. 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. 8. GUARANTEE For details of warranty, refer to Viking’s current list price schedule or contact Viking directly.
  • Page 12 STANDARD RESPONSE, QUICK RESPONSE, EXTENDED COVERAGE, AND DRY SPRINKLERS Viking thermosensitive spray sprinklers consist of a small frame and either a glass bulb or a fusible operating element. Available styles include pendent, flush pendent, concealed pendent, upright, horizontal sidewall, vertical sidewall, or conventional, depending on the particular sprinkler model selected.
  • Page 13 C. Installation Instructions - Dry Sprinklers WARNING: Viking dry sprinklers are to be installed in the 1” outlet (for dry and preaction systems), or run of malleable, ductile iron, or Nibco CPVC* threaded tee fittings (for wet systems) that meet the dimensional requirements of ANSI B16.3 (Class 150), or cast iron threaded tee fittings that meet the dimensional requirements of ANSI B16.4 (Class 125), even at branch line ends.

  • Page 14: Operation

    4. After installation, the entire sprinkler system must be tested. The test must be conducted to comply with the installation stand- ards. Viking high pressure sprinklers may be hydrostatically tested at a maximum of 300 psi (20.7 bar) for limited periods of time (two hours), for the purpose of acceptance by the Authority Having Jurisdiction.
  • Page 15 Refer to the Authority Having Jurisdiction for minimum replacement requirements. 7. 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.

  • Page 16: Warranty Terms And Conditions

    For more information, go to www.P65Warnings.ca.gov 2. WARRANTY TERMS AND CONDITIONS For details of warranty, refer to Viking’s current list price schedule at www.vikinggroupinc.com or contact Viking directly. New Bulletin Form No. F_111218 18.11.15...

Table of Contents