Model TAV-D
Air Vent, Dry
Page 1 of 4
NOVEMBER 2019
TFP1262
Worldwide
Contacts
www.tyco-fire.com
IMPORTANT
Refer to Technical Data Sheet
TFP2300 for warnings pertaining to
regulatory and health information.
General
Description
The TYCO Model TAV-D Air Vent, Dry,
provides oxygen venting in dry pipe
fire sprinkler systems. As a fire sprin-
kler system is filled with a continuous
supply of nitrogen gas from the TYCO
Nitrogen Generator, the Air Vent allows
oxygen rich gas to be vented from the
fire sprinkler system. Over a short
period of time the Air Vent will almost
completely remove oxygen from the fire
sprinkler system (< 2% oxygen).
The Air Vent must be installed as
shown on the engineering design doc-
uments. If a location is not specified,
install the Air Vent on the fire sprinkler
system riser on the system side of the
main control valve. The vent is also
installed to provide source gas when
used in conjunction with the TYCO
TSGA SMART Gas Analyzer.
The Air Vent is equipped with a levered
Float Valve that allows oxygen to
discharge but prevents water from
leaking through the restricted venting
orifice in the event that water enters
the fire sprinkler system, as shown
in Figure 1. A Backpressure Regula-
tor is also included to prevent total
system depressurization from the vent
assembly.
The Restricted Venting Orifice allows
oxygen to be vented from the fire
sprinkler system at a controlled rate to
achieve a minimum nitrogen concen-
tration of 98%. A special fitting is pro-
vided to receive 5/32 in. tubing when
the vent is used in conjunction with
the TYCO Model TSGA SMART Gas
Analyzer.
There are two models of the TYCO Air
Vent, the TAV-D and the TSV-D. The
units both operate as described above
but the TSV-D model includes an elec-
tronic solenoid valve wired to a control
panel that automatically closes the vent
once the desired nitrogen concentra-
tion is reached. The control panel is
also equipped with a reset switch to
allow the venting process to restart
should oxygen be reintroduced into the
fire sprinkler system.
NOTICE
The TYCO Model TAV-D Air Vent, Dry,
described herein must be installed and
maintained in compliance with this
document, in addition to the standards
of any other authorities having jurisdic-
tion. Failure to do so may impair the
performance of the related devices.
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
Service Pressure
Up to 175 psig (12 bar)
System Connection
1 in. NPT Male
Temperature Range
40°F to 120°F (4.5°C to 49°C)
Dimensions
13.5 in. (W) x 4.25 in. (D) x 7.5 in. (H)
(343 mm (W) x 108 mm (D) X 191 mm (H))