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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
3. TECHNICAL DATA
Specifications:
Minimum Operating Pressure: Refer to Design Criteria in this technical data sheet.
Rated to 175 psi (12 bar) water working pressure
Factory tested hydrostatically to 500 psi (34.5 bar)
Thread size: 1/2" (15 mm) NPT
Nominal K-Factor: 5.6 U.S. (80 metric*)
* Metric K-factor measurement shown is when pressure is measured in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Overall Length: 2-1/4" (57 mm)
Material Standards:
Frame Casting: Brass UNS-C84400 or QM Brass
Deflector: Phosphor Bronze UNS-C51000
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
Ordering Information: (Refer to Table 1.)
4. INSTALLATION
Refer to appropriate NFPA Installation Standards.
5. OPERATION
During a fire condition, the heat sensitive liquid in the glass bulb expands, causing the glass to shatter, releasing the pip cap and
sealing spring assembly. Water flowing through the sprinkler orifice strikes the deflector, forming a uniform spray pattern to extinguish
or control the fire, and protect the piping in the interstitial space.
6. INSPECTIONS, TESTS AND MAINTENANCE
Refer to NFPA 25 for Inspection, Testing and Maintenance requirements.
7. AVAILABILITY
The Viking QR COIN
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.
Wrench Flat
Figure 1:
Standard Sprinkler Wrench 21475M/B
Form No. F_081216
21.03.06 Rev 20.3
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Sprinkler is available through a network of domestic and international distributors. See The Viking
®
Protective clip
TECHNICAL DATA
COIN
RESPONSE UPRIGHT
SPRINKLER VK950
(SPECIFIC APPLICATION)
1-3/4"
(45 mm)
2-1/4"
(57 mm)
7/16" (11 mm)
Nominal pipe engagement
Figure 2:
Sprinkler Dimensions
2 of 14
QUICK
®
1/2" NPT
(15mm)
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