Viking MICROFAST VK302 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
The Viking Microfast
thermosensitive glass bulb spray sprinkler available with various finishes and tem-
perature ratings 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 environments and are Listed and Approved as indicated in the Approval
Charts.
2. LISTINGS AND APPROVALS
cULus Listed: Category VNIV
FM Approved: Class Series 2000
VdS Approved: Certificates G414009, G414010, G4040095, and 4880045
LPCB Approved: Certificate 096e/06
CE: Standard EN 12259-1,Declaration of Performance DOP_Sprinklers_LPCB_5-2-19, DOP_VK302ENT_29-1-20 & DOP_VK302-
57C_30-9-20
China Approval: Approved according to China GB standard
MED Certified: Standard EN 12259-1, EC-certificate of conformity 0832-MED-1003
Refer to Approval Chart 1 and Design Criteria cULus Listing requirements, and refer to Approval Chart 2 and Design Criteria for
FM Approval requirements that must be followed.
3. TECHNICAL DATA
Specifications:
Minimum Operating Pressure: 7 psi (0.5 bar)
Rated to 175 psi (12 bar) water working pressure
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: 2-1/4" (58 mm)
*cULus Listing, FM Approval, 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).
Material Standards:
Frame Casting: Brass UNS-C84400 or QM Brass
Deflector: Phosphor Bronze UNS-C51000 or Copper UNS-C19500
Bulb: Glass, nominal 3 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.
Ordering Information: (Also refer to the current Viking price list.)
Order Quick Response Pendent Sprinklers 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.
Form No. F_033314 Rev 01
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Quick Response Pendent Sprinkler VK302 is a small
®
April 2023
TECHNICAL DATA
MICROFAST QUICK
®
RESPONSE PENDENT
SPRINKLER VK302 (K5.6)
Replaces Form No. F_033314 Rev 20.1
(added venting statement.)
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