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QUICK RESPONSE  

CONCEALED PENDENT  

SPRINKLER VK4611 (K2.8)

TECHNICAL DATA

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

Page 1 of 8

Form No. F_061620    21.10.07  Rev 21.2

1.  DESCRIPTION

Viking Quick Response Concealed Pendent Sprinkler VK4611 is a 

small thermosensitive, glass-bulb sprinkler designed for installation 

on concealed pipe systems where the appearance of a smooth 

ceiling is desired. The low-profile cover assemblies provide up to ½” 

 

(13 mm) of vertical adjustment.

Features: 

•  K2.8 (40.3 metric).

•  Quick response glass bulb operating element.

•  Integral threaded adapter cup accepts push-on or thread-on cover plates.

•  Low-profile, small diameter, removeable cover plates offer almost flush 

appearance upon installation and allow ease of maintenance.

•  Protective cap prevents damage during installation and finishing and keeps 

errant overspray from coating internal parts.

•  Various finishes available to meet design requirements.

•  Optional Electroless Nickel PTFE (ENT) coating provides corrosion resistance 

(see Approval Chart).

2.  LISTINGS AND APPROVALS

cULus Listed: 

Category VNIV

Refer to the Approval Charts and Design Criteria on for cULus Listing requirements 

that must be followed.

3.  TECHNICAL DATA

Specifications:

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: 1/2” (15 mm) NPT or 15 mm BSPT

Nominal K-Factor: 2.8 U.S. (40.3 metric*)

Glass-bulb fluid temperature rated to -65 °F (-55 °C)

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

Material Standards:

Sprinkler Frame: QM Brass

Deflector: Phosphor Bronze UNS-C51000

Deflector Pins: Stainless Steel UNS-S43000

Pip Cap and Insert Assembly: Copper UNS-C11000, SS UNS-S30400 and SS UNS-S31600

Compression Screw: UNS-C36000

Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape

Cover Adapter: Cold Rolled Steel JIS G3141 and Carbon Steel UNS-G10100 (per JIS G3141) 

Shipping Cap: High Density Polyethylene

Cover Plate Materials:

Cover Plate Assembly: Copper UNS-C11000 and Brass UNS-C26800 or or Stainless Steel UNS-S30400

Spring: Beryllium Nickel

Solder: Eutectic

Ordering Information:

 Sprinkler Assembly and Cover Plate must be ordered separately. Refer to Tables 1 and 2.

4.  INSTALLATION

Refer to appropriate NFPA Installation Standards and installation instructions in this document.

Replaces Form No. F_061620 Rev 21.1

(Replaced wrench part numbers, new cap design)

For Light Hazard Occupancies Only

Содержание VK4611

Страница 1: ...s Listed Category VNIV Refer to the Approval Charts and Design Criteria on for cULus Listing requirements that must be followed 3 TECHNICAL DATA Specifications 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 2 15 mm NPT or 15 mm BSPT Nominal K Factor 2 8 U S 40 3 metric Glass bulb fluid temperature ra...

Страница 2: ...ting 4 Order a cover plate refer to Table 2 Example 23438AE 200 F 93 C Temperature Rated Sprinkler with a standard Brass finish Sprinkler Base Part No Size 1 Finishes 2 Temperature Ratings NPT Inch BSPT mm Description Suffix1 Sprinkler Temperature Classification Nominal Rating Bulb Color Max Ambient Ceiling Temperature2 Suffix 23438 1 2 Brass A Oridinary 155 F 68 C Red 100 F 38 C B 23440 15 ENT 3 ...

Страница 3: ...hed Chrome F 23174 3 5 16 84 Round 23463 3 5 16 84 Round Brushed Chrome F B 23179 3 5 16 84 Square 23482 3 5 16 84 Square Bright Brass B Antique Brass B A Brushed Brass B B Brushed Copper E B Painted White M W Painted Ivory M I Painted Black M B 3 Temperature Rating Matrix1 2 Cover Plate Nominal Rating Required Temperature Classification Sprinkler Nominal Rating Sprinkler Maximum Ambient Ceiling T...

Страница 4: ...ny additional approvals 4 Listed by Underwriter s Laboratories for use in the U S and Canada 5 The 135 F 57 C covers have an orange label The 165 F 74 C covers have a white label 6 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 7 cULus Listed as corrosi...

Страница 5: ...a page www vikinggroupinc com Page 5 of 8 Form No F_061620 21 10 07 Rev 21 2 Figure 2 Identification of Custom Paint Figure 3 Square Cover Assembly All custom color painted cover plates will have an identifying label affixed to the inside of the cover that indicates the custom color and will have a representative sample a paint dot of the paint on the label F A C T O R Y A P PLIED CUSTOM P A I N T...

Страница 6: ... 13 mm If the bottom of the cover is flush with the surface of the ceiling when installed the sprinkler adapter cup will be recessed 1 2 15 mm See Figure 5 Figure 4 Sprinkler Dimensions 3 76 mm 21 4 57 mm 1 2 NPT or BSPT Nominal pipe engagement 7 16 11 mm Install the sprinkler so the finished surface of the ceiling lines up within the marked 1 2 13 mm range on the protective cap A Figure 5 Sprinkl...

Страница 7: ...e to the sprinkler assembly can occur if the proper wrench is not used Other sprinkler wrenches available from Viking may fit into the sprinkler adapter cup however only the wrenches shown here are designed to properly install this sprinkler Step 2 Rotate the wrench slightly in either direction until the tines on the wrench D line up with the vent openings E on the adapter cup and lock into place ...

Страница 8: ...chnical data page www vikinggroupinc com Page 8 of 8 Form No F_061620 21 10 07 Rev 21 2 Figure 8 Installing the Cover Plate Install the cover plate by inserting the adpater into the adapter cup and pushing or threading into place depending on style Snug the cover plate in place by rotating clockwise Ensure the cover plate is flush with the ceiling as shown to allow airflow through the sprinkler as...

Страница 9: ...stall sprinklers onto piping at the floor level Install sprinklers after the piping is in place to prevent mechanical damage DO NOT allow impacts such as hammer blows directly to sprinklers or to fittings pipe or couplings in close proximity to sprinklers Sprinklers can be damaged from direct or indirect impacts DO NOT attempt to remove drywall paint etc from sprinklers Take care not to over tight...

Страница 10: ...D CAPS MUST BE REMOVED FROM SPRINKLERS BEFORE PLACING THE SYSTEM IN SERVICE Figure 1 Sprinkler shield being removed from a pendent sprinkler Figure 2 Sprinkler cap being removed from a pendent sprinkler Figure 3 Sprinkler cap being re moved from and upright sprinkler HOW TO REMOVE SHIELDS AND CAPS No tools are necessary to remove the shields or caps from sprinklers DO NOT use any sharp objects to ...

Страница 11: ... these sprinklers NOTE The protective cap is temporarily removed during installation and then placed back on the sprinkler for protection until finish work is completed Do not over tighten the sprinklers into fittings during installation Do not use the sprinkler deflector to start or thread the sprinklers into fittings during installation Do not attempt to remove drywall paint etc from the sprinkl...

Страница 12: ...t the corrosion resistant properties of the sprinkler Use care when locating sprinklers near fixtures that can generate heat Do not install sprinklers where they would be exposed to temperatures exceed ing the maximum recommended ambient temperature for the temperature rating used Inspect the coated sprinklers frequently soon after installation to verify the integrity of the corrosion resistant co...

Страница 13: ...t readings to be expected In addition recognized installation rules may require a higher temperature classifica tion depending upon sprinkler location occupancy classification commodity classification storage height and other hazards In all cases the maximum expected ceiling temperature dictates the lowest allowable temperature classification Sprinklers located immediately adjacent to a heat sourc...

Страница 14: ...ly intended for installation with a concealed piping system The assembly con sists of a sprinkler installed in a decorative adjustable recessed escutcheon that minimizes the protrusion of the sprinkler beyond the ceiling or wall without adversely affecting the sprinkler distribution or sensitivity Refer to the appropriate technical data page for allowable sprinkler models temperature ratings and o...

Страница 15: ...TENANCE Refer to NFPA 25 for Inspection Testing and Maintenance requirements 7 AVAILABILITY Viking sprinklers are 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 IMPORTAN...

Страница 16: ...he sprinkler technical data page Never install any glass bulb sprinkler if the bulb is cracked or if there is a loss of liquid from the bulb A small air bubble should be present in the glass bulb Any sprinkler with a loss of liquid from the glass bulb or damage to the fusible element should be destroyed immediately Note Installing glass bulb sprinklers in direct sunlight ultraviolet light may affe...

Страница 17: ...uctile iron or Nibco CPVC threaded tee fittings for wet systems that meet the dimensional requirements of ANSI B16 3 Class 150 or cast iron threaded tee fittings that meet the dimensional requirements of ANSI B16 4 Class 125 even at branch line ends The threaded end of the dry sprinkler is designed to allow the seal to penetrate and extend into the fitting to a predetermined depth This prevents co...

Страница 18: ...ther To remove caps from frame style sprinklers turn the caps slightly and pull them off the sprinklers SPRINKLER CAPS OR BULB SHIELDS MUST BE REMOVED FROM SPRINKLERS BEFORE PLACING THE SYSTEM IN SERVICE Retain a protective cap or shield in the spare sprinkler cabinet 5 For flush style sprinklers the ceiling ring can now be installed onto the sprinkler body Align the ceiling ring with the sprinkle...

Страница 19: ...Prior to removing the system from service notify all Authorities Having Jurisdiction Consideration should be given to employment of a fire patrol in the affected area 1 Remove the system from service drain all water and relieve all pressure on the piping 2a For frame style sprinklers use the special sprinkler wrench to remove the old sprinkler by turning it counterclockwise to unthread it from the...

Страница 20: ...ction of fire protection products are provided herin as they relate to legally mandated jurisdictional regions WARNING STATE OF CALIFORNIA USA Installing or servicing fire protection products such as sprinklers valves piping etc can expose you to chemicals including but not li mited to lead nickel butadiene titaninum dioxide chromium carbon black and acrylonitrile which are known to the State of C...

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