Ultra Low Flow AQUAMIST Nozzles
Type ULF AM24
Automatic (Closed)
Page 1 of 2
SEPTEMBER 2018
TFP2224
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.
Worldwide
Contacts
www.tyco-fire.com
General
Description
The TYCO Ultra Low Flow AQUAMIST
Nozzles Type ULF AM24 are closed
(automatic) nozzles intended for use
with engineered, water-mist systems.
They are low-pressure nozzles that
utilize a single fluid jet impinging on a
diffuser to produce a spray having a
range of water droplet sizes suitable
for the control of Class A fires.
It is recommended that the end user be
consulted with respect to the suitabil-
ity of the materials of construction and
finish for any given corrosive environ-
ment. The effects of ambient tempera-
ture, concentration of chemicals, and
gas/chemical velocity should be con-
sidered, at a minimum, along with the
corrosive nature to which the nozzles
may be exposed.
NOTICE
The Type ULF AM24 AQUAMIST
Nozzles described herein must be
installed and maintained in compliance
with this document, as well as with the
applicable standards of the NATIONAL
FIRE PROTECTION ASSOCIATION
(NFPA), in addition to the standards
of any authorities having jurisdiction.
Failure to do so may impair the per-
formance of these devices.
The design of individual water-mist
systems can vary considerably,
depending on the characteristics and
nature of the hazard and the basic
purpose of the water-mist system.
Because of these variations, the design
of water-mist systems for fire protec-
tion must only be performed by expe-
rienced designers who thoroughly
understand the limitations as well as
capabilities of such systems.
The owner is responsible for main-
taining their fire protection system
and devices in proper operating con-
dition. Contact the installing contrac-
tor or product manufacturer with any
questions.
Technical
Data
Discharge Coefficient
K = 9,2 LPM/bar
1/2
(0.64 GPM/psi
1/2
)
Thread Connection
1/2 in. NPT
Response Time Index
Quick Response
Finish
Natural Brass
Chrome Plated
Pure White
Signal White
Temperature Ratings
Refer to Table A
Physical Characteristics
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
Inlet Strainer . . . . . . . . . . . . . . . . . . . . . . Copper
Orifice Insert . . . . . . . . . . . . . . . . . . . . . . .Bronze
Button . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bronze
Sealing Assembly . . Beryllium Nickel w/TEFLON
Ejection Spring . . . . . . . . . . . . . . Stainless Steel
Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Glass
Diffuser . . . . . . . . . . . . . . . . . . . . . . . . . . .Bronze
Loading Screw . . . . . . . . . . . . . . . . . . . . .Bronze
The smallest waterway (orifice) diam-
eter of the Orifice Insert is nominally
4,4 mm (0.172 in.). The diameter of the
Inlet Strainer perforations is nominally
3,2 mm (0.125 in.).
Design
Criteria
Obtain guidance for the design of a
water-mist system that utilizes the
TYCO Type ULF AM24 AQUAMIST
Nozzles from the Technical Services
department.
The Type ULF AM24 can only be
installed in non-recessed applications.
Installation
The TYCO Type ULF AM24 AQUAMIST
Nozzles must be installed in accor-
dance with this section.
General Instructions
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) to 2,4 mm
(3/32 in.) for the 93°C (200°F) tempera-
ture ratings.
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 lb-ft). Higher levels
of torque can distort the nozzle inlet
and cause leakage or impairment of
the nozzle.
For flush installations, use the Style 20
Escutcheon.
Step 1.
Install the Type ULF AM24
Nozzle in the pendent position as
shown in Figure 1.
Step 2.
With pipe-thread sealant
applied 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
Nozzle Wrench, refer to Figure 2. With
reference to Figure 1, apply the wrench
to the Nozzle Wrench Flats.
