Model AV-1-300 Alarm Check Valve, 300 psi (20,7 bar)
2-1/2, 4, 6 & 8 Inch (DN65, DN100, DN150 & DN200)
Vertical or Horizontal* Installation
Worldwide
Contacts
www.tyco-fire.com
Page 1 of 20
SEPTEMBER 2014
TFP910
General
Description
The TYCO Model AV-1-300 Alarm
Check Valves are divided seat ring,
rubber-faced clapper, waterflow alarm
check valves that are intended for
use in wet pipe (automatic sprinkler)
fire protection systems. They may be
installed vertically or horizontally*,
and they are designed to automati-
cally actuate electric and/or hydraulic
alarms when there is a steady flow of
water into the system that is equivalent
to the discharge rate of one or more
sprinklers.
A separately ordered Model RC-1
Retard Chamber (Ref. Technical Data
Sheet TFP920) is required for installa-
tions subject to variable pressures. It is
used to help prevent false alarms asso-
ciated with pressure variations in public
water supplies.
The AV-1-300 Alarm Check Valve Trim
includes pressure gauges to monitor
system pressure conditions, a bypass
check valve, a main drain valve, and
an alarm test valve. The bypass check
valve reduces the possibility of false
alarms by permitting slow as well as
small transient increases in water sup-
ply pressure to be passed through to
the system without opening the water-
way clapper.
NOTICE
The TYCO Model AV-1-300 Alarm
Check Valves described herein must
be installed and maintained in com-
pliance 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. Fail-
ure to do so may impair the integrity of
these devices.
The owner is responsible for main-
taining their fire protection system
and devices in proper operating
condition. Contact the installing con-
tractor or product manufacturer with
any questions.
Technical
Data
Approvals
UL and C-UL Listed
FM Approved
Working Water Pressure Range
20 to 300 psi (1,4 to 20,7 bar)
Friction Loss
Refer to Graph A.
End Connections
Groove x Groove
Flange x Groove
Flange x Flange
Refer to Table A for size applicability
Weights
Refer to Table A.
Physical Characteristics
The body is ductile iron, the hand-hole
cover is ductile iron, and the seat ring
is bronze. The clapper for the 2-1/2
inch (DN65) valve size is stainless steel.
The clapper for the larger valve sizes
is ductile iron. All valve sizes utilize an
EPDM clapper facing.
Flanged connections are available
drilled per ANSI, ISO, AS, and JIS
specifications as detailed in Table B.
Threaded port connections for the
AV-1-300 Valves are available NPT
threaded or threaded per ISO 7-1 as
detailed in the Ordering Procedure sec-
tion. Valves with NPT threaded ports
will readily accept the trim arrange-
ments detailed in Figures 4 through 6.
* 4, 6, and 8 inch (DN100, DN150, and DN200) valve sizes
For Fire Protection pressure rating, listing
and approval information, contact
your Tyco Representative.
