TECHNICAL DATA
QREC CONCEALED HSW
SPRINKLER VK638-D (K8.0)
Page 3 of 7
Form No. F_082211 19.09.23 Rev 19.1
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: [email protected]
Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com
Sprinkler Base
Part Number
1
NPT Thread Size
Nominal K-Factor
Maximum Water
Working Pressure
Overall Length
(Sprinkler Body)
Inches
mm
U.S.
metric
2
Inches
mm
17375A-X
3/4
20
8.0
115.2
175 psi (12 Bar)
2-3/4
70
Approval Chart
Quick Response EC Concealed HSW Sprinkler VK638
For Light Hazard Occupancies Only.
For installation below smooth, flat, horizontal ceilings only.
Maximum Areas of Coverage
4
(Width x Throw)
Minimum Water Supply Requirements
4
Deflector-to-Ceiling
Distance
Listings and Approvals
3
(See Design Criteria)
cULus
5
NYC
28’ x 12’ (8.5 m x 3.7 m)
34 gpm @ 18.1 psi (128.7 L/min @ 1.24 Bar)
4 to 12” (102 to 305 mm)
AX1, BY1
See Footnote 6.
28’ x 14’ (8.5 m x 4.3 m)
40 gpm @ 25.0 psi (151.4 L/min @ 1.73 Bar)
4 to 12” (102 to 305 mm)
AX1, BY1
See Footnote 6.
Sprinkler Temperature Ratings
A - 135 °F (57 °C) and 155 °F (68 °C)
B - 175 °F (79 °C) and 200 °F (93 °C)
Cover Assembly
Temperature Ratings
X - 135 °F (57 °C) cover 13501
1
Y - 165 °F (74 °C) cover 13501
1
Cover Plate Finishes
1 - Polished Chrome, Painted White
7
, Painted Ivory
7
, or Painted
Black
7
Footnotes
1
Part number shown is the base part number. For complete part number, refer to current Viking price list schedule.
2
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.
3
This chart shows the listings and approvals available at the time of printing. Other approvals may be in process. Check with the manufacturer for any
additional approvals.
4
For areas of coverage smaller than shown, use the “Minimum Water Supply Requirement” for the next larger area listed. Flows and pressures listed
are per sprinkler.
5
Listed by Underwriter’s Laboratories, Inc. for use in the U.S. and Canada. cULus Listings are limited to Light Hazard occupancies with smooth, flat, hori-
zontal ceilings only. Always install horizontal sidewall sprinklers with the top of the deflector parallel with the ceiling. Refer to Figure 3.
6
Meets New York City requirements, effective July 1, 2008.
7
Painted finish consists of Polyester Baked Enamel. Other paint colors are available on request with the same listings as the standard paint colors.
Listings and approvals apply for any paint manufacturer. Contact Viking for additional information.
NOTE:
Custom colors are indicated on a label inside the cover assembly. Refer to Figure 5.
Figure 2:
Sprinkler Installation and Correct Use of Wrenches
