Viking MICROMATIC VK120 Technical Data Manual

Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
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1. DESCRIPTION
Viking Micromatic Standard Response Conventional (Old Style) VK120 Sprinklers are
®
small, thermosensitive, glass-bulb spray sprinklers available in several different finishes,
temperature ratings, and K-factors to meet design requirements. The special Polyester,
and Electroless Nickel PTFE (ENT) coatings can be used in decorative applications where
colors are desired. In addition, these coatings have been investigated for installation in
corrosive atmospheres and are listed as corrosion resistant as indicated in the Approval
Chart.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
VdS Approved: Certificate G414012 and G4980008
LPCB Approved: Certificate 096e/06
CE Certified: Standard EN 12259-1, EC-certificate of constancy of performance
0832-CPR-S0021, EC-Certificate of Conformity 0832-CPD-2001
MED Certified: Standard EN 12259-1, EC-certificate 0832-MED-1003
UKCA Approved: Standard EN 12259-1; Certificate Number 0832-UKCA-CPR-S5029; UKCA DOC_S5029; 2021
NOTE: Other International approval certificates are available upon request.
Refer to Approval Chart 1 and Design Criteria for cULus Listing requirements.
3. TECHNICAL DATA
Specifications:
Minimum Operating Pressure: 7 psi (0.5 bar)*
Maximum Working Pressure: 175 psi (12 bar)
Factory tested hydrostatically to 500 psi (34.5 bar)
Testing: U.S.A. Patent No. 4,831,870
Thread size: 3/4" NPT, 20 mm BSP
Nominal K-Factor: 8.0 U.S. (115.2 metric**)
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Overall Length: 2-3/16" (56 mm)
*cULus Listing and NFPA 13 installs require a minimum of 7 psi (0.5 bar). The minimum operating pressure for LPCB and CE Approvals ONLY is 5
psi (0.35 bar).
** Metric K-factor measurement shown is in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
Material Standards:
Frame Casting: Brass UNS-C84400 or QM Brass
Deflector: Brass UNS-C26000
Bulb: Glass, nominal 5 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Screw: Brass UNS-C36000
Pip Cap and Insert Assembly: Copper UNS-C11000 and Stainless Steel UNS-S30400
For Polyester Coated Sprinklers: Belleville Spring-Exposed
For ENT Coated Sprinklers: Belleville Spring - Exposed, Screw and Pipcap - ENT plated
Form No. F_032914 Rev 01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
November 2023
MICROMATIC
RESPONSE CONVENTIONAL
SPRINKLER VK120 (K8.0)
NOTE: As of May 2018 all logos have been
removed from the wrench boss.
Replaces Form No. F_032914 Rev 18.3
(Added UKCA Approval, removed 10228 and 10168.)
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STANDARD
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