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QUICK RESPONSE 

ORDINARY HAZARD DRY 

HSW FUSIBLE LINK  

SPRINKLERS (8.0K)  

(VK2843, VK2883, & VK2923)

TECHNICAL DATA

Page 3 of 8

Form No. F_022717     18.11.01     Rev 18.1.P65

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.

Approval Chart

Quick Response Ordinary Hazard Dry 

HSW Fusible Link Sprinklers (8.0K) 

Maximum 175 PSI (12 bar) WWP

Sprinkler 

Base Part 

Number

1

SIN

Style

Thread Size

Nominal 

K-Factor

2

Order Length 

Increment

Listings and Approvals

(Refer also to Design Criteria on page 4.)

NPT

BSP

Inches mm cULus

5

FM NYC

6

VdS LPCB

21491U

VK2883 Adjustable 

Standard

1”

--

8.0 U.S.

(115.2 metric

3

)

1/2”

12.7

A1

--

A1

--

--

--

--

21492U

VK2883

--

25 mm

1/2”

12.7

A1

--

A1

--

--

--

--

21485U

VK2923 Adjustable 

Recessed

1”

--

1/4”

6.35

B2

--

B2

--

--

--

--

21486U

VK2923

--

25 mm

1/4”

6.35

B2

--

B2

--

--

--

--

21497U

VK2843

Plain Barrel

1”

--

1/2”

12.7

A3

--

A3

--

--

--

--

21498U

VK2843

--

25 mm

1/2”

12.7

A3

--

A3

--

--

--

--

Approved Temperature Ratings

A - 165 °F (74 °C), 205 °F (96 °C), and 280 °F (138 

°C)

B - 165 °F (74 °C) and 205 °F (96 °C)

Approved Finishes and “A” Dimensions

1 - Chrome or White Polyester sprinkler with a Chrome or White Polyester Sleeve and Escutcheon 

with “A” dimensions 1-1/2” to 45-1/2” (38.1 mm to 1,156 mm)

2 - Chrome or White Polyester with “A” dimensions 3-1/4” to 47-1/2” (82.5 mm to 1,207 mm)
3 - Chrome or Brass with “A” dimensions 3” to 47” (76.2 mm to 1,194 mm)

Footnotes

1

 Part number shown is the base part number. For complete part number, refer to current Viking price list schedule.

2

 K-Factor applies for standard lengths (“A” Dimensions indicated above).

3

 Metric K-factor shown is for use when pressure is measured in bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.

4

 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. 

5

 Listed by Underwriter’s Laboratories for use in the U.S. and Canada.

6

 Accepted for use, City of New York Department of Buildings, MEA 89-92-E, Vol. 37.

TABLE 1: AVAILABLE SPRINKLER TEMPERATURE RATINGS AND FINISHES

Sprinkler Temperature 

Classification

Sprinkler Nominal 

Temperature Rating

1

Maximum Ambient 

Ceiling Temperature

2

Frame Paint 

Color

2

Ordinary

165 °F (74 °C)

100 °F (38 °C)

None

Intermediate

205 °F (96 °C)

150 °F (65 °C)

White

High

280 °F (138 °C)

225 °F (107 °C)

Blue

Sprinkler Finishes:

 Brass, Chrome, and White Polyester

Footnotes

1

 The sprinkler temperature rating is stamped on the deflector. 

2

 Based on NFPA-13. Other limits may apply, depending on fire loading, sprinkler location, and other requirements of the Authority Having Jurisdiction. 

Refer to specific installation standards.

Summary of Contents for VK2843

Page 1: ...olyester finish may change color This natural discoloration over time is not in itself an indication of corrosion and should not be treated as such All sprinklers installed in corrosive environments s...

Page 2: ...Horizontal Sidewall up to 62 1 575 mm Plain Barrel Dry Horizontal Sidewall up to 64 1 626 mm Contact the manufacturer for more information Finish Suffix Brass A Chrome F and White Polyester M W Temper...

Page 3: ...1 2 to 45 1 2 38 1 mm to 1 156 mm 2 Chrome or White Polyester with A dimensions 3 1 4 to 47 1 2 82 5 mm to 1 207 mm 3 Chrome or Brass with A dimensions 3 to 47 76 2 mm to 1 194 mm Footnotes 1 Part nu...

Page 4: ...Fusible Link Sprinklers are cULus Listed as indicated in the Approval Chart for installation in accordance with the latest edition of NFPA 13 for standard spray sprinklers Designed for use in Light a...

Page 5: ...5 mm shorter than the A Dimension To locate the deflector at the maximum distance from the wall with no adjustment available order the standard dry horizontal sidewall sprinikler 1 25 mm longer than t...

Page 6: ...1 16 27 mm 5 Escutcheon outer diameter 3 1 16 78 mm 6 Top of deflector to centerline 5 8 16 mm Determining the A Dimension Adustable Recessed HSW Sprinkler with Model E 1 Escutcheon 1 Determine the d...

Page 7: ...to deflector distance 2 1 4 57 mm 4 Top of deflector to centerline 5 8 16 mm 5 Pipe outside diameter Same as 1 13 mm Schedule 40 pipe 1 5 16 33 mm Determining the A Dimension Plain Barrel Dry HSW Spri...

Page 8: ...eaded tee fitting per ANSI 16 4 Class 125 only Exposed Barrel Outer surface of wall Ambient Temperature of the Protected Area at the Discharge End of the Sprinkler Exposed Barrel Ambient Temperature 4...

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