Viking VK2843, VK2883, VK2923 Technical Data Manual

QUICK RESPONSE

ORDINARY HAZARD DRY

TECHNICAL DATA

The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058

Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [e-mail]

Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com.

HSW FUSIBLE LINK
SPRINKLERS (8.0K)

(VK2843, VK2883, & VK2923)

1. DESCRIPTION

Viking Quick Response Ordinary Hazard Dry Horizontal Sidewall Sprinklers are
thermosensitive spray sprinklers suitable for use in areas subject to freezing.
The sprinklers are designed for dry systems and preaction systems where it is
necessary to prevent water or condensation from entering the drop nipple before
sprinkler operation. They may also be installed in spaces subject to freezing
and supplied from a wet system in an adjacent heated area. The large orifice
dry sidewall sprinkler allows greater flows at lower pressures than standard
orifice sprinklers. The newly desinged deflector carries an expanded approval for
installation from 4” to 12” below the ceiling.

Viking Quick Response Ordinary Hazard Dry Horizontal Sidewall Sprinklers
are available in various finishes and temperature ratings to meet design
requirements. The special Polyester coating has been investigated for installation
in corrosive atmospheres and is cULus listed as corrosion resistant as indicated
in the Approval Chart.

NOTE: When installed in some corrosive environments, the Polyester 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 should be replaced or tested as
described in NFPA 25 on a more frequent basis.

Page 1 of 8

2. LISTINGS AND APPROVALS

cULus Listed: Category VNIV

NYC Approved: MEA 89-92-E, Volume 37

Refer to the Approval Chart on page 3 and Design Criteria on page 4 for cULus Listing requirements that must be followed.



3. TECHNICAL DATA

Specications:

Available since 2005.
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” NPT or 25 mm BSP
Nominal K-Factor: 8.0 U.S. (115.2 metric*) for lengths up to 48”.

* 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.

Covered by U.S. Patent numbers: 8,636,075 and 8,376,060

Material Standards:

Frame Casting: Brass UNS-C84400
Deflector: Phosphor Bronze UNS-C51000
Fusible Element Assembly: Nickel Alloy
Trigger and Support: Stainless Steel UNS-S31600
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Compression Screw: Brass UNS-C36000
Seat and Adapter Assembly: Brass UNS-C36000
Orifice: Copper UNS-C11000 or UNS-C21000
Tube: ERW Hydraulic Steel Tube
Inlet and Barrel End: QM Brass or Brass UNS-C31400 or Brass UNS-C31600
Support (Internal): Brass UNS-C36000 or Brass UNS-C31400 or Brass UNS-C31600
Barrel: Steel Pipe UNS-G10260, Electrodeposited Epoxy Base finish
Sleeve (for Adjustable Standard style only): Brass UNS-C26000 or UNS-C26800

Form No. F_022717 18.11.01 Rev 18.1.P65

Replaces Form No. F_022717 Rev 18.1

(Added P65 Warning.)

Page 2 of 8

QUICK RESPONSE

ORDINARY HAZARD DRY

TECHNICAL DATA

The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058

Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [e-mail]

Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com.

HSW FUSIBLE LINK
SPRINKLERS (8.0K)

(VK2843, VK2883, & VK2923)

Escutcheon Materials:

Adjustable Standard Dry Escutcheons: Brass UNS-C26000 or UNS-C26800
Recessed Dry Escutcheons: Cold Rolled Steel UNS-G10080

Ordering Information: (Also refer to the current Viking price list.)

Order Quick Response Ordinary Hazard Dry Horizontal Sidewall Sprinklers by first adding the appropriate suffix for the sprinkler

finish, the appropriate suffix for the temperature rating, and then the suffix for the length (“A” dimension) to sprinkler base part
number. Order in a specific length noted as the “A” dimension (see Figures 3, 5, and 6). The “A” dimension is the distance from
the face of the fitting (tee) to the desired finished surface of the wall in which it is to be installed.

These sprinklers are listed and approved in lengths from 1-1/2” to 45-1/2” (38 mm to 1,156 mm) for the Adjustable Standard style,

3” to 47” (76 mm to 1,194 mm) for the Plain Barrel style, and 3-1/4” to 47-1/2” (83 mm to 1,207 mm) for the Adjustable Recessed
style.

Lengths exceeding the standard lengths are available, with no approvals, on a “made-to-order” basis: Recessed Dry Horizontal

Sidewall up to 64-1/2 (1,632 mm). Adjustable Standard Dry 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
Temperature Suffix: 165 °F (74 °C)= C, 205 °F (96 °C) = E, 280 °F (138 °C) = G
For example, sprinkler VK2923 with 1” NPT Threads, Chrome finish, 165 °F (74 °C) temperature rating, and “A” length of 10” =

Part No. 21485FB10.

Available Finishes And Temperature Ratings: Refer to Table 1.
Accessories: (Also refer to the Viking website.)

Sprinkler Wrenches:
A. Standard Wrench: Part No. 07297W/B (available since 1991)

B. Wrench for recessed sprinklers: Part No. 07565W/B** (available since 1991)
**A ½” ratchet is required (not available from Viking).

Dry Sprinkler Protective Cover: Part No. 15610
Replacement Escutcheons:

A. Adjustable Standard Dry Escutcheon: Base Part No. 08086F
B. Model E-1 Recessed Dry Escutcheon Cup: Base Part No. 05459A

4. INSTALLATION

Refer to appropriate NFPA Installation Standards.

Figure 1: Standard Sprinkler Wrench

07297W/B

5. OPERATION

During fire conditions, the heat-sensitive fusible element assembly disengages, releasing the internal parts to open the waterway.
Water flowing through the sprinkler orifice strikes the sprinkler deflector, forming a uniform spray pattern to extinguish or control
the fire.

6. INSPECTIONS, TESTS AND MAINTENANCE

Refer to NFPA 25 for Inspection, Testing and Maintenance requirements.

7. AVAILABILITY

The Viking Quick Response Ordinary Hazard Dry Horizontal Sidewall Sprinkler is available through a network of domestic and
international distributors. See The Viking 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.

Form No. F_022717 18.11.01 Rev 18.1.P65

Page 3 of 8

QUICK RESPONSE

ORDINARY HAZARD DRY

TECHNICAL DATA

The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058

Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [e-mail]

Visit the Viking website for the latest edition of this technical data page www.vikinggroupinc.com.

TABLE 1: AVAILABLE SPRINKLER TEMPERATURE RATINGS AND FINISHES

HSW FUSIBLE LINK
SPRINKLERS (8.0K)

(VK2843, VK2883, & VK2923)

Sprinkler Temperature

Classification

Sprinkler Nominal

Temperature Rating

1

Ceiling Temperature

2

Maximum Ambient

Frame Paint

2

Color

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.

Approval Chart

Quick Response Ordinary Hazard Dry

HSW Fusible Link Sprinklers (8.0K)

Maximum 175 PSI (12 bar) WWP

Sprinkler

Base Part

Number

21491U VK2883

21492U VK2883 -- 25 mm 1/2” 12.7 A1 -- A1 -- -- -- --

21485U VK2923

21486U VK2923 -- 25 mm 1/4” 6.35 B2 -- B2 -- -- -- --

21497U VK2843

21498U VK2843 -- 25 mm 1/2” 12.7 A3 -- A3 -- -- -- --

SIN Style

1

Adjustable

Standard

Adjustable

Recessed

Plain Barrel

Thread Size

NPT BSP Inches mm cULus5FM NYC6VdS LPCB

Nominal

K-Factor

2

1” --

1” -- 1/4” 6.35 B2 -- B2 -- -- -- --

8.0 U.S.

(115.2 metric3)

1” -- 1/2” 12.7 A3 -- A3 -- -- -- --

Order Length

Increment

1/2” 12.7 A1 -- A1 -- -- -- --

Listings and Approvals

(Refer also to Design Criteria on page 4.)

4

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)

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.

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

Approved Finishes and “A” Dimensions

Form No. F_022717 18.11.01 Rev 18.1.P65