TFP2228
Page 2 of 4
Installation
TYCO Ultra Low Flow AQUAMIST Type
ULF AM28 Nozzles must be installed in
accordance with this section.
Do not install any bulb type nozzle if
the bulb is cracked or there is a loss
of liquid from the bulb. With the nozzle
held horizontally, a small air bubble
should be present. The diameter of
the air bubble is approximately 1,6 mm
(1/16 in.) for the 57
°
C (135
°
F) tempera-
ture rating.
A leak-tight 1/2 inch NPT nozzle joint
should be obtained by applying a min-
imum-to-maximum torque of 9,5 to
19,0 N·m (7 to 14 ft-lb). Higher levels
of torque can distort the nozzle inlet
and cause leakage or impairment of
the nozzle.
Type ULF AM28
The Type ULF AM28 AQUAMIST
Nozzles must be installed in accor-
dance with the following instructions:
Step 1.
Install the Type ULF AM28 in the
pendent position as shown in Figure 1.
Step 2.
With pipe thread sealant
ap plied to the pipe threads, hand-
tighten the nozzle into the nozzle fitting.
Step 3.
Tighten the nozzle into the
nozzle fitting using only the W-Type 6
Wrench (Ref. to Figure 2). With refer-
ence to Figure 1, apply the W-Type 6
Wrench to the wrench flats.
-
2
Orifice
Insert
Diffuser
Ejection
Spring
-
9
-
8
Bulb
Loading
Screw
-
6
-
7
Button
Frame
Sealing
Assembly
4 -
-
5
-
3
Strainer
Components:
1 -
2
1
SHAPE
DIFFUSER
3
6
5
7
4
9
8
WRENCH
FLATS
11,1 mm
(7/16")
NOMINAL
MAKE-IN
1/2"
NPT
ESCUTCHEON
PLATE SEATING
SURFACE
17,5 mm
(11/16")
44,5 mm
(1-3/4")
63,5 mm
(2-1/2")
19,3 mm
(3/4")
31,0 mm
(1.22")
WRENCH RECESS
(USE ONLY
END "A")
73,0 mm
(2-7/8") DIA.
57,2 mm
(2-1/4") DIA.
MOUNTING
SURFACE
FACE OF
NOZZLE
FITTING
11,1±3,2 mm
(7/16±1/8")
MOUNTING
PLATE
3,2 mm
(1/8")
AM28
38,1 mm (1-1/2")
31,8 mm (1-1/4")
12,7 mm (1/2")
6,4 mm (1/4")
CLOSURE
WRENCH
RECESS
PUSH WRENCH
IN TO ENSURE
ENGAGEMENT
WITH SPRINKLER
WRENCHING AREA
FIGURE 3
W-TYPE 6 WRENCH
FIGURE 1
TYPE ULF AM28 AQUAMIST NOZZLE
NOMINAL DIMENSIONS
FIGURE 2
STYLE 20 RECESSED ESCUTCHEON FOR USE WITH THE
TYPE ULF AM28 AQUAMIST NOZZLE
FIGURE 4
W-TYPE 7 RECESSED WRENCH
