Tyco AquaMist ULF AM27 Manual

Ultra Low Flow AQUAMIST Nozzles
Type ULF AM27
Automatic (Closed)
General
Description
The TYCO Ultra Low Flow AQUAMIST
Nozzles Type ULF AM27 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 AM27 AQUAMIST
Nozzles de scribed herein must be
installed and maintained in compliance
with this document and with the appli-
cable 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 performance
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
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
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.

Approvals

The TYCO Type ULF AM27 AQUA-
MIST Nozzles in a 57°C (135°F) tem-
perature rating and in a natural brass
finish are Factory Mutual Approved
when used as part of an engineered,
wet pipe water mist system. In particu-
lar, the FM Approval testing was per-
formed in accordance with FM Class
5560, Approval Standard for Water Mist
Systems.
Technical
Data
Discharge Coefficient
K = 11,7 LPM/bar ½
(K = 0.81 GPM/psi ½ )
Thread Connection
1/2 inch NPT
Finish
Natural Brass
Chrome Plated
White Coated
Temperature Ratings
Refer to Table A

Physical Characteristics

Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brass
Strainer . . . . . . . . . . . . . . . . . . . . . . . . . . Copper
Orifice Insert . . . . . . . . . . . . . . . . . . . . . . .Bronze
Button . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bronze
Sealing Assembly . . Beryllium Nickel w/TEFLON
Ejection Spring . . . . . . . . . . . . . . Stainless Steel
Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Glass
Diffuser/Loading Screw . . . . . . . Stainless Steel
The smallest waterway (orifice) diam-
eter of the Orifice Insert is nominally 4,3
mm (0.169 inches). The diameter of the
Inlet Strainer perforations is nominally
3,2 mm (0.125 inches).
AUGUST 2018
Worldwide
www.tyco-fire.com
Contacts
Design
Criteria
Obtain guidance for the design of a
water-mist system that utilizes the
TYCO Type ULF AM27 AQUAMIST
Nozzles from the Technical Services
department.
TFP2227