Page 31 - NG-1 1150, NG-1 1500, NG-1 2000, NG-1 3000 - Stand-Alone Nitrogen Generator System Installation Manual
P. 31

Auxiliary Equipment
    For use under U.S. Patents
8,720,591, 9,144,700, 9,186,533 and 9,610466 B2
General Description
Model Number:
Service Pressure: System Connection: Temperature Range: Dimensions:
Up to 175 PSIG (12 Bar)
1 in. NPT Male
40°F to 120°F (4.5°C to 49°C)
12.0 in. (W) x 4.65 in. (D) x 9.1 in. (H)
(305 mm (W) x 118 mm (D) x 231 mm (H))
Support Hanger Not Required
 The TYCO TAV-D Vent provides oxygen venting in dry pipe and preaction fire sprinkler systems. The restricted venting orifice allows oxygen to be vented from the fire sprinkler system at a controlled rate to achieve a minimum nitrogen concentration of 98%. The TYCO TAV-D Vent is equipped with a levered float valve that allows gas to discharge but prevents liquid water from leaking through the restricted venting orifice in the event water enters the fire sprinkler system. A backpressure regulator is also included to prevent total system depressurization from the vent assembly. A special fitting is provided to receive 5/32” tubing when the vent is used in conjunction with the TYCO SMART Gas Analyzer.
Installation Instructions
1. The TYCO TAV-D Vent is equipped with a ball valve to be connected to the fire sprinkler riser. The contractor must install a 1” outlet (welded or mechanical) to connect the vent assembly to the sprinkler system on the system side of the main control valve. The ball valve must remain in the closed position until the TYCO Nitrogen Generator System has been commissioned.
NOTE: The vent assembly does not require a support hanger.
2. Install the vent assembly in a level position. Recommended mounting height is 5’-10’ (1.5-3m) above
the finished floor, but a minimum of 2’ (.6m) above the dry pipe or preaction valve.
NOTE: Piping to the vent assembly cannot be installed in a configuration that would trap water and prevent drainage to the sprinkler system; a water trap impedes the ability of the vent assembly to vent oxygen from the fire sprinkler system.
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