Telephone: 269-945-9501 Technical Services: 877-384-5464 Fax: 269-818-1680 Email: techsvcs@vikingcorp.com
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1. DESCRIPTION
Viking Stainless Steel Dry Pendent Sprinklers are thermosensitive spray sprin-
klers 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.
Viking Standard Response Dry Pendent Sprinklers are available in various finishes
and temperature ratings, to meet design requirements. These sprinklers are not
listed as corrosion-resistant sprinklers, and are not intended for use in cor-
rosive environments.
2. LISTINGS AND APPROVALS
NOTE: Viking Stainless Steel Dry Pendent Sprinklers carry no listings or approv-
als.
Viking Stainless Steel Dry Pendent Sprinklers are not intended for use in corrosive
environments. Use only sprinklers listed for corrosive environments when subject
to corrosive atmospheres.
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" NPT or 25 mm BSPT
Nominal K-Factor: 5.6 U.S. (80.6 metric*) for all lengths.
*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.
Glass-bulb fluid temperature rated to -65 °F (-55 °C)
Covered by the following U.S. Patents: 8,636,075 and 10,220,231
Material Standards:
Frame Casting: Stainless Steel UNS-S30300
Deflector: Stainless Steel UNS-N08367
Bulb: Glass, nominal 5 mm diameter
Belleville Spring Sealing Assembly: Nickel Alloy, coated on both sides with PTFE Tape
Spring Base: Brass UNS-C31400 or UNS-C31600
Compression Screw: Stainless Steel UNS-S31603
Pip Cap: Brass UNS-C31400 or UNS-C31600, Nickel Plated
Pip Cap Adapter: Brass UNS-C36000, Nickel Plated
Orifice: Copper UNS-C22000 or UNS-C11000, Nickel Plated
Tube: ERW Hydraulic Steel Tube
Support (Internal): Stainless Steel UNS-S30400
Barrel: Steel Pipe UNS-G10260, Electrodeposited Epoxy Base finish
Barrel End and Threads: QM Brass, Epoxy Coated
Escutcheon: Stainless Steel UNS-S30400
Ordering Information: (Also refer to the current Viking price list.)
Order Stainless Steel Dry Pendent Sprinklers by first adding 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 through 5). The "A" dimension is the distance from the face of the fitting (tee) to the desired finished surface of the ceiling.
These sprinklers may be ordered in standard lengths from 3" to 47" (76.2 mm to 1,194 mm) for the plain barrel style, and 3-1/4" to
47-1/2" (82.5 mm to 1,207 mm) for the adjustable recessed style.
Lengths exceeding the standard lengths are available on a "made-to-order" basis: Recessed Dry Pendent up to 65-1/2" (1,664 mm).
Plain Barrel Dry Pendent up to 65" (1,651 mm). Contact the manufacturer for more information.
Temperature Suffix: 155 °F (68 °C) = B, 175 °F (79 °C) = D, 200 °F (93 °C) = E, 286 °F (141 °C) = G
For example, sprinkler VK169 with 1" NPT Threads, a 155 °F (68 °C) temperature rating, and "A" length of 10" = Part No.
10360UB10.
Form No. F_060796
20.03.18
TECHNICAL DATA
The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058
Rev 20.1
STAINLESS STEEL
DRY PENDENT SPRINKLERS
Adjustable Recessed Plain Barrel
(Not Listed or Approved)
FD
Debra Crafton
Approved
Fire Marshal
11/16/2023 4:52:40 PM
Replaces Form No. F_060796 Rev 19.1
(Revised factory test specifications.)
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