Viking M Installation

September 16, 2005
1. PRODUCT NAME
Viking Model M Standard Response Dry
Pendent Sprinklers
• Adjustable Recessed, Adjustable Stan-
dard, or Plain Barrel
2. MANUFACTURER
The Viking Corporation
210 N. Industrial Park Road
Hastings, Michigan 49058, USA
Telephone: (269) 945-9501
(877) 384-5464
Fax: (269) 945-9599
e-mail: techsvcs@vikingcorp.com
3. PRODUCT DESCRIPTION
Viking Standard Response Dry Pendent
Sprinklers are thermosensitive glass-bulb
spray sprinklers suitable for use in areas
subject to freezing. The sprinklers are de-
signed for dry systems and preaction sys-
tems where it is necessary to prevent wa-
ter 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 pendent sprinkler is of the familiar
Model M design with a 5 mm glass bulb. Vi-
king Standard Response Dry Pendent
Sprinklers are available in several finishes
and temperature ratings, standard or large
orifice, to meet design requirements. The
large orifice dry pendent sprinkler allows
greater flows at lower pressures than stan-
dard orifice dry pendent sprinklers.
The assembly features a sealed brass inlet
and a durable, threaded steel barrel with
an electrodeposited epoxy base coating.
The seal at the threaded end of the assem-
bly is held in place by force transmitted
from the compression screw, through the
glass bulb and internal parts, onto a spe-
cial sealing spring.
During fire conditions, the heat-sensitive
liquid in the glass bulb expands, causing
the glass to shatter, 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.
The Viking Dry Pendent Sprinkler may be
installed with the barrel exposed, or with
one of two escutcheon styles.
• A recessed style escutcheon with up to
5/8" (15,8 mm) adjustment (see Figure
3) provides an aesthetically pleasing re-
cessed appearance.
• For standard installations, the sprinkler
is available with an adjustable surface-
mounted ceiling escutcheon, finished to
allow up to 2" (51 mm) of adjustment. Re-
fer to Figure 1.
Both styles of escutcheons slip on from be-
low the ceiling to allow installation of the
sprinkler prior to ceiling construction.
Viking Standard Response Dry Pendent
Sprinklers are available in ¼" (6,35 mm) in-
crements for the recessed style, and in ½"
(12,7 mm) increments for the "adjustable
Note: Units of measure in parentheses may be approximations.
Form No. F_071591
TECHNICAL DATA
Adjustable
Recessed
Sprinkler Temperature Nominal Sprinkler Temp.
Classification Rating (Fusing Point)
Ordinary
Intermediate
Intermediate
High
1
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.
2
Temperature rating is stamped on the deflector.
ceiling escutcheon" style, and the plain bar-
rel style, installed with no escutcheon.
These sprinklers may be ordered in mini-
mum lengths from 1-1/2" (38,1 mm) for the
adjustable standard style, 3" (76,2 mm) for
the plain barrel style, and 3-1/4" (82,5 mm)
for the adjustable recessed style. They
have listings and approvals with a maxi-
mum length of 45-1/2" (1 156 mm) for the
adjustable standard style*, 47" (1 194 mm)
for the plain barrel style*, and 47-1/2" (1 207
mm) for the adjustable recessed style*.
* Lengths exceeding the standard lengths are avail-
able, with no approvals, on a "made-to-order" basis:
• Recessed Dry Pendent up to 65-1/2" (1 664 mm).
• Adjustable Standard Dry Pendent up to 63-1/2"
(1 613 mm).
• Plain Barrel Dry Pendent up to 65" (1 651 mm).
Contact the manufacturer for more information.
4. TECHNICAL DATA
LISTINGS AND APPROVALS
Refer to the chart on page 101 d.
Glass-bulb fluid temperature rated to
-65 °F (-55 °C).
Rated to 175 psi (1 207 kPa) water work-
ing pressure.
Thread Size: 1" NPT or 25 mm BSP
Nominal K-Factors:
For Standard Orifice Sprinklers VK150,
VK151, VK154, VK155, VK158, and
VK159: 5.6 U.S. (8,1 metric**) for all
listed and approved lengths.
For Large Orifice Sprinklers VK163, VK164,
and VK166: 8.0 U.S. (11,5 metric**) for
lengths up to 20". For lengths exceeding
20", refer to Figure 4 on page 101 d.
**Metric K-Factor shown is for use when pressure is
measured in kPa. When pressure is measured in
BAR, multiply the metric K-Factor shown by 10.0.
STANDARD RESPONSE
DRY PENDENT SPRINKLERS
Adjustable
Standard
Plain
Barrel
Maximum Ambient
Ceiling Temp.
155 °F (68 °C) 100 °F (38 °C)
175 °F (79 °C) 150 °F (65 °C)
200 °F (93 °C) 150 °F (65 °C)
286 °F (141 °C) 225 °F (107 °C)
Min. operating pressure: 7 psi (48,3 kPa)
Factory tested pneumatically at 100 psi
(685 kPa).
SPRINKLER MATERIALS
Frame: Brass Castings UNS-C84400
Deflector: Brass UNS-C26000
Bulb: Glass, nominal 5 mm diameter
Belleville Spring Sealing Assembly: Nickel
Alloy, coated on both sides with Teflon
Tape
Spring Base: Brass UNS-C31400 or
UNS-C31600
Displacement Ring: Brass UNS-C51000
Screw: Brass UNS-C36000
Pip Cap:
UNS-C31600 for standard orifice sprin-
klers. Brass UNS-C36000 for large ori-
fice sprinklers
Pip Cap Adapter: Brass UNS-C36000
Seat: Copper UNS-C21000
Orifice: Copper UNS-C21000
Washer: Stainless Steel UNS-S30400
Spacer: Stainless Steel UNS-S30400
Gasket: Buna-N
Tube: ERW Hydraulic Steel Tube
Inlet: Brass UNS-C31600
Support (Internal): Stainless Steel UNS-
S30400 for standard orifice sprinklers.
Brass UNS-C36000 for large orifice
sprinklers.
Spring (Internal):
UNS-S30200
Barrel: Steel Pipe UNS-G10260, Electro-
deposited Epoxy Base finish
Sleeve (for Adjustable Standard style only):
Brass UNS-C26000 or UNS-C26800
Replaces page 101 a-d, dated May 13, 2005
(revised the K-Factor graph).
Sprinkler 101 a
Bulb
1
2
Color
Red
Yellow
Green
Blue
Brass UNS-C31400 or
Stainless Steel