Viking MICROMATIC VK118 Technical Data Manual

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.
1. DESCRIPTION
Viking Micromatic Standard Response Conventional (Old Style) VK118 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.
Viking standard response sprinklers may be ordered and/or used as open sprinklers (glass bulb
and pip cap assembly removed) on deluge systems. Refer to
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
VdS Approved: Certificates G414005 and G4980003
LPCB Approved: Certificate 096e/06
CE Certified: Standard EN 12259-1, EC-certificate of constancy of performance: 0832-CPR-S0021
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)
Thread size: 1/2" NPT, 15 mm BSP
Nominal K-Factor: 5.6 U.S. (80.6 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 PTFE Coated Sprinklers: Belleville Spring-Exposed, Screw-Nickel Plated, Pip Cap-PTFE Coated
For Polyester Coated Sprinklers: Belleville Spring-Exposed
Ordering Information: (Also refer to the current Viking price list.)
Order Micromatic Standard Response Conventional Sprinkler VK118 by first adding the appropriate suffix for the sprinkler finish
®
and then the appropriate suffix for the temperature rating to the sprinkler base part number.
Finish Suffix: Brass = A, Chrome = F, White Polyester = M-/W, Black Polyester = M-/B, Wax Coated = C,
Wax Over Polyester = V-/W, and ENT = JN
Form No. F_022414 Rev 01
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
December 2023
RESPONSE CONVENTIONAL
Ordering Instructions in section 3.
MICROMATIC STANDARD
®
SPRINKLER VK118 (K5.6)
Replaces Form F_022414 Rev 18.1.P65
Page 1 of 5
(Added UKCA)