165*F ESFR Storage Fusible Link Pendent Fire Sprinkler K 22.4 Viking VK506

Description

165*F, 1" NPT Viking Early Suppression Fast Response (ESFR) Pendent Sprinkler, K22.4
Model: VK506
Viking Early Suppression Fast Response (ESFR) Pendent Sprinkler VK506 incorporates the capability to suppress specific high-challenge fires. The addition of a larger K-Factor allows ESFR performance at lower end-head pressures than ESFR K14 sprinklers. K22.4 ESFR sprinklers can:
Eliminate the use of in-rack sprinklers when protecting high-piled storage of certain
specified materials up to 40 ft. (12.2 m) with ceilings up to 45 ft. (13.7 m)*
Reduce or eliminate the need for a system fire pump.
Provide flexibility when sizing system piping.
Viking VK506 ESFR Pendent Sprinklers are primarily intended to protect the following types of storage, which tend to produce severe-challenge fires: palletized and solid pile storage and single, double, multiple row, and portable open rack storage (no open-top containers or solid shelves).
Viking ESFR Pendent VK506 Sprinklers provide protection of most common storage
materials, including:
Encapsulated or unencapsulated Class I, II, III, and IV commodities*.
cULus Listed for protection of cartoned unexpanded plastic commodities and FM Approved for protection of cartoned and uncartoned
unexpanded plastic commodities*.
FM Approved for protection of exposed expanded polystyrene and exposed expanded polyurethane commodities*.
Refer the Approval Charts and Design Criteria on pages 128c-e for cULus Listing and FM Approval requirements that must be followed. In addition, some storage arrangements of rolled paper, flammable liquids, aerosols, and rubber tires may be protected by Viking
ESFR Pendent Sprinkler VK506
Technical data
Specifications:
Available since 2013.
Minimum Operating Pressure:
Refer to NFPA 13 or FM Global Loss Prevention Data Sheets.
Maximum Working Pressure:
175 psi (12 bar). Factory tested hydro statically to 500 psi (34.5 bar).
Thread size:
1” NPT for Sprinkler 18493, 25 mm BSP for Sprinkler 18494
Nominal K-Factor:
22.4 U.S. (320 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” (44.5 mm)
Covered by one or more of the following patents: US5,829,532 US5,829,532��; US6,059,044 US6,059,044��; US6,336,509 US6,336,509��;
US6,502,643; US6,868,917; AU722593; GB2336777
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
Compression Screw:
Stainless Steel UNS-S31603
Trigger and Support:
Stainless Steel UNS-S31600
Fusible Element Assembly:
Beryllium Nickel, coated with black acrylic paint