Tyco SB Manual

Type SB
Washdown Nozzle, Flush Deck
United States Navy
General
Description
The TYCO Type SB Flush Deck Nozzles
are washdown nozzles for use on
United States Navy ships. They are
welded into position flush with the
deck surface. The inlet to the nozzle is
sized for welding or brazing to 1/2 inch
(DN15) pipe.
The Flush Deck Nozzles have a Ball
that normally rests in the exit orifice to
prevent debris from falling into it. When
water is flowing, the Ball is lifted up and
remains centered by the combination
of the threaded insert and the inside
edges of the three webs. The sepa-
rable Truss Head Machine Screw and
Fender Washer supplied with the Type
SB Flush Deck Nozzles are used to
temporarily cover the nozzle when the
deck is being restored.
The Type SB Replacement Parts Kit
that includes a Web with Modified
Threaded Insert, Ball, Modified Insert,
Truss Head Machine Screw, and
Fender Washer is illustrated in Figure
2. A Threaded Insert Installation Tool is
also available.
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
Always refer to Technical Data
Sheet TFP700 for the "INSTALLER
WARNING" that provides cautions
with respect to handling and instal-
lation of sprinkler systems and com-
ponents. Improper handling and
Installation can permanently damage
a sprinkler system or its compo-
nents and cause the sprinkler to fail
to operate in a fire situation or cause
it to operate prematurely.
Page 1 of 4
Technical
Data
Approvals
The Type SB Flush Deck Nozzles and
related items are manufactured in com-
pliance with NAVSEA Drawing No. 803-
1385828. They have been qualified to
the High Impact Shock requirements
of MIL-S-901C (Navy), Grade A, Hull
Mounted, Class I, Light Weight Test.
Discharge Coefficient
5.1 GPM/psi ½ (73,4 LPM/bar ½
Water Discharge Pattern
The approximate water discharge
pattern at zero wind velocity is shown
in Figure 3, for reference purposes only.
Nozzle spacing is to be in accordance
with the applicable standards of the
Naval Sea Systems Command.
The recommended range of flowing
pressure at the Nozzle inlet is 30 to 50
psi (2,1 to 3,4 bar).
Thread Connection
1/2 in. (DN15) welding or brazing
Markings
Stainless Steel Nozzle:
SS-SB-110-.438
Replacement Stainless Steel Web:
SS SB
Weight
Stainless Steel: 1.0 lb (0,45 kg)
AUGUST 2018
Worldwide
Contacts
)
Physical Characteristics
The Body of the stainless steel Nozzle
and the stainless steel Replacement
Web are cast from austenitic stainless
steel per ASTM A 351 (UNS J92800).
Maximum carbon content is 0.03
percent for weldability. The castings
are solution annealed for maximum
corrosion resistance.
• The Ball is Type 302 stainless steel.
• The Modified Threaded Insert is
stainless steel per AMS7245.
• The Truss Head Machine Screw is a
Type 18-8 stainless steel.
• The Fender Washer is plated (zinc
or cadmium) SAE 1008-1020 carbon
steel.
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