Viking VK680 Technical Data Manual

QUICK RESPONSE

TECHNICAL DATA

EXTENDED COVERAGE

CONCEALED HSW

SPRINKLER VK680 (K8.0)

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

Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]

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

1. DESCRIPTION

Viking QREC Concealed Horizontal Sidewall Sprinkler VK680 is a small high­sensitivity solder link and lever sprinkler designed for installation on concealed pipe
systems, where the appearance of a smooth wall is desired. The fast response
operating element and special flow shaper characteristics meet the challenges of
quick response extended coverage standards.

The sprinkler is hidden from view by a low profile, small diameter cover plate installed
flush to the wall. The cover plate is available in several decorative finishes to meet
design requirements. The two-piece design allows installation and testing of the
sprinkler prior to installation of the cover plate. After the system has been tested and
wall finish has been applied, the push-on design of the cover plate assembly allows
easy installation of the cover plate with up to 1/4” (6.4 mm) adjustment.

2. LISTINGS AND APPROVALS

cULus Listed: Category VNIV

CCCF Approved: Approved by the China Certification Center for Fire

Products (CCCF)

Refer to the Approval Chart and Design Criteria on this Technical Data Page
for cULus Listing requirements that must be followed.

For Light Hazard Occupancies Only



Page 1 of 5

3. TECHNICAL DATA

Specications:

Available since 2011.
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: 3/4” (20 mm) NPT
Nominal K-Factor: 8.0 U.S. (115.2 metric†)

† Metric K-factor measurement is in Bar. When pressure is measured in kPa, divide the metric K-factor shown by 10.0.

Available Cover Plate Horizontal Adjustment: 1/4” (6.4 mm)
Overall Length (Sprinkler Body): 2” (50.8 mm)
Patents Pending

Material Standards:

Sprinkler Body: QM Brass and Brass UNS-C84400
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with Teflon Tape
Seat: Brass UNS-C31400
Deflector Ring: Brass UNS-C23000
Deflector Pins: Stainless Steel UNS-S30200
Halo: Brass UNS-C31400 or Phosphor Bronze UNS-C51000
Flow Shaper: Phosphor Bronze UNS-C51000
Lever Bar Ring: Brass UNS-C31400 or Brass UNS-C84400
Compression Screw: 18-8 Stainless Steel
Fusible Link Assembly: Nickel Alloy and Eutectic Solder
Fusible Link Levers: Stainless Steel UNS-S31600
Guide Pin: Stainless Steel UNS-S43000
Shipping Cap: Polyethylene

Cover Assembly Materials:

Cover Plate Assembly: Copper UNS-C11000 and Brass UNS-C26800
Spring: Beryllium Nickel
Solder: Eutectic

Form No. F_050611 18.10.25 Rev 17.1.P65

Replaces Form No. F_050611 Rev 17.1

(Added P65 Warning.)

Page 2 of 5

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QUICK RESPONSE

TECHNICAL DATA

EXTENDED COVERAGE

CONCEALED HSW

SPRINKLER VK680 (K8.0)

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

Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]

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

Ordering Information: (Also refer to the current Viking price list.)
Viking QREC Concealed HSW Sprinkler VK680 and Cover Plate Assembly must be ordered separately:

Sprinkler: Part No. 17114AC (includes a 165 °F (74 °C) temperature rated sprinkler with a protective plastic cap covering the unit).
Cover Plate Assembly: Base Part No. 16207 (3-5/16” diameter)

Specify finish and temperature rating of the cover plate assembly by adding the appropriate suffixes for the finish and the cover

temperature rating to the base part number:
Finish Suffix: Polished Chrome = F, Painted White = M-/W, Painted Ivory = M-/I, Painted Black = M-/B
Temperature Suffix: 135 °F (57 °C) = A
For example, cover 16207 with a Polished Chrome finish and a 135 °F (57 °C) temperature rating = 16207FA.

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

Sprinkler Wrenches**:

A. Heavy Duty Wrench Part No. 16208W/R (available since 2010)
B. Head Cabinet Wrench Part Number 16267*** (available since 2010)
C. Optional Large Concealed Cover Plate Installer Tool Part No. 14867 (available since 2007)

**Requires a ½” ratchet (not available from Viking).
***Ideal for sprinkler cabinets.

Sprinkler Cabinet: Part No. 01731A (available since 1971)

4. INSTALLATION

Refer to appropriate NFPA Installation Standards.

5. OPERATION

During fire conditions, when the temperature around the sprinkler approaches its operating temperature, the cover plate detaches.
Continued heating of the exposed sprinkler causes the fusible element to disengage, releasing the sealing assembly. Water flowing
through the sprinkler orifice strikes the flow shaper, 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 Model VK680 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.

All custom color painted cover plates will have an identifying label affixed

Form No. F_050611 18.10.25 Rev 17.1.P65

to the inside of the cover that indicates the custom color and will have a

Figure 1: Identification of Custom Paint for Concealed Covers

representative sample (a paint dot) of the paint on the label.

Page 3 of 5

QUICK RESPONSE

TECHNICAL DATA

EXTENDED COVERAGE

CONCEALED HSW

SPRINKLER VK680 (K8.0)

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

Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]

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

TABLE 1: AVAILABLE SPRINKLER TEMPERATURE RATINGS AND FINISHES

Sprinkler Temperature

Classification

Ordinary 165 °F (74 °C) 100 °F (38 °C) 135 °F (57 °C) 16207

Cover Plate Finishes: Polished Chrome, Painted White, Painted Ivory, or Painted Black

1

The sprinkler temperature rating is stamped on the inlet.

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.

3

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

Sprinkler Nominal

Temperature Rating

Maximum Ambient

1

Ceiling Temperature

Footnotes

Temperature Rating of the

2

Required Cover Assembly

Cover Plate

Base Part Number

3

The internal design of the
sprinkler wrench is shaped
to fit over the sprinkler and

protective cap to ensure that
the top of the wrench will be

oriented in the same direction

as the top of the sprinkler

deflector.

Figure 2: Sprinkler VK680 Installation and Correct Use of Wrench

Measure from the

centerline of the

sprinkler to the ceiling.

Centerline of sprinkler
(Corresponds with the

centerline of the wrench)

wrench

CEILING

shown then slide the wrench over the

sprinkler body and the protective cap.

Sprinkler bodySprinkler

Must be located with the centerline

of the sprinkler 4-3/8” to 12-3/8”

(112 to 314 mm) below the ceiling.

Orient the sprinkler and wrench as

The top of the sprinkler

is marked “TOP”.

Keep the top of the

element oriented parallel

to the ceiling.

Figure 3: Sprinkler VK680 Correct Deflector Orientation

Form No. F_050611 18.10.25 Rev 17.1.P65

Page 4 of 5

QUICK RESPONSE

TECHNICAL DATA

EXTENDED COVERAGE

CONCEALED HSW

SPRINKLER VK680 (K8.0)

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

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

Inches mm U.S. metric

Maximum Water

Working Pressure

2

psi (bar) Inches mm

Overall Length

(Sprinkler Body)

17114AC 3/4 -- 8.0 115.2 175 (12) 2 51

NOTICE - Product Below - ONLY for CCCF Approval

20379AC -- 20 mm 8.0 115.2 175 (12) 2 51

Approval Chart

QREC Concealed HSW Sprinkler VK680

For installation below smooth, flat, horizontal ceilings only.

Maximum Areas of

Coverage

4

Minimum Water Supply Requirements

(Width x Throw)

14’ x 22’ (4.3 m x 6.7 m) 31 gpm @ 15.0 psi (117.3 L/min @ 1.04 Bar)

16’ x 16’ (4.9 m x 4.9 m) 26 gpm @ 10.6 psi (98.4 L/min @ 0.73 Bar) AX1 AX1

16’ x 18’ (4.9 m x 5.5 m) 29 gpm @ 13.1 psi (109.8 L/min @ 0.91 Bar) AX1 AX1

16’ x 20’ (4.9 m x 6.1 m) 32 gpm @ 16.0 psi (121.1 L/min @ 1.1 Bar) AX1 AX1

16’ x 22’ (4.9 m x 6.7 m) 36 gpm @ 20.3 psi (136.3 L/min @ 1.4 Bar) AX1 AX1

18’ x 18’ (5.5 m x 5.5 m) 33 gpm @ 17.0 psi (124.9 L/min @ 1.2 Bar) AX1 AX1

18’ x 20’ (5.5 m x 6.1 m) 36 gpm @ 20.3 psi (136.3 L/min @ 1.4 Bar) AX1 AX1

18’ x 22’ (5.5 m x 6.7 m) 40 gpm @ 25 psi (151.4 L/min @ 1.72 Bar) AX1 AX1

14’ x 24’ (4.3 m x 7.3 m) 34 gpm @ 18.1 psi (128.7 L/min @ 1.25 Bar)

16’ x 24’ (4.9 m x 7.3 m) 39 gpm @ 23.8 psi (147.6 L/min @ 1.64 Bar) AX1 --

14’ x 24’ (4.3 m x 7.3 m) 35 gpm @ 19.2 psi (132.5 L/min @ 1.32 Bar)

16’ x 24’ (4.9 m x 7.3 m) 40 gpm @ 25 psi (151.4 L/min @ 1.72 Bar) AX1 --

Sprinkler Temperature

Rating

A - 165 °F (74 °C)

Cover Assembly

Temperature Rating

X - 135 °F (57 °C) cover 16207

For Light Hazard Occupancies Only.

Sprinkler Distance

4

Below the Ceiling

Must be installed

with the centerline

of the sprinkler

4-3/8” to 12-3/8”

(112 to

314 mm) below the

ceiling.

4-3/8” (112 mm)

to 6-3/8” (162 mm)

6-3/8” (162 mm)

to 12-3/8” (314 mm)

1

1 - Polished Chrome, Painted White7, Painted Ivory7, or Painted Black

Listings and Approvals

(Refer also to Design Criteria on page 4.)

5

cULus

NYC

AX1

AX1 --

See Footnote 6.

AX1 --

Cover Plate Finishes

3

AX1

7

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,

Footnotes

horizontal ceilings only. Always install horizontal sidewall sprinkler VK680 with the top of the sprinkler element oriented parallel with the ceiling. Refer
to Figure 3 on page 4.

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 1.

Form No. F_050611 18.10.25 Rev 17.1.P65

Page 5 of 5

QUICK RESPONSE

TECHNICAL DATA

EXTENDED COVERAGE

CONCEALED HSW

SPRINKLER VK680 (K8.0)

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

Telephone: [phone] Technical Services: 877-384-5464 Fax: [phone] Email: [email protected]

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

(Also refer to the Approval Chart on page 3.)

DESIGN CRITERIA

cULus Listing Requirements:

QREC Concealed HSW Sprinkler VK680 is cULus Listed for installation in accordance with the latest edition of NFPA 13 for extended coverage sidewall

spray sprinklers:

• Limited to Light Hazard occupancies with smooth, flat, horizontal ceilings only.

• Minimum distance between sprinklers: 9 ft. (2.7 m)

• THE TOP OF THE SPRINKLER BODY AND THE TOP OF THE INSTALLATION WRENCH ARE MARKED “TOP”. Orient the top of the sprinkler

element parallel with the ceiling as shown in Figure 3.

• Minimum distance from end walls is 4 in. (102 mm).

• Maximum distance from the end wall shall be no more than one-half of the allowable distance between sprinklers. The distance shall be measured

perpendicular to the wall.

• The sprinkler installation and obstruction rules contained in NFPA 13 for extended coverage sidewall spray sprinklers must be followed.

NOTE: Concealed sprinklers must be installed in neutral or negative pressure plenums only.

IMPORTANT: Always refer to Bulletin Form No. F_091699 - Care and Handling of Sprinklers. Also refer to Form No. F_080614
for general care, installation, and maintenance information. Viking sprinklers are to be installed in accordance with the latest
edition of Viking technical data, the appropriate standards of NFPA, FM Global, LPCB, APSAD, VdS or other similar organiza­tions, and also with the provisions of governmental codes, ordinances, and standards, whenever applicable.

Concealed Sprinkler Wrench** 16208W/R

** A 1/2” ratchet is required (not available from Viking).

To install the Cover Plate assembly, gently push it onto the

sprinkler body with even pressure using the palm of the hand.

2-3/16” (56 mm)

diameter opening

required in the wall.

3/4”

(20 mm)

NPT

Concealed

sprinkler body

with protective

cap

Figure 4: Sprinkler VK680 Dimensions and Cover Installation

Form No. F_050611 18.10.25 Rev 17.1.P65

1-15/16”
(49 mm)

Minimum

1/4” (6 mm) Horizontal

adjustment available.

2-3/16”

(56 mm)

Maximum

Replaces Form No. F_050611 Rev 17.1

(Added P65 Warning.)

3-5/16”

(84 mm)

1/4”

(6 mm)