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FIG 155FA

Double Outlet Vent With Flash Arrester

T-style open vent used primarily on small storage tanks.

WARNING: DO NOT FILL OR UNLOAD FUEL FROM A STORAGE TANK UNLESS IT IS CERTAIN THAT THE TANK VENTS WILL OPERATE PROPERLY. Morrison tank vents are designed only for use on shop fabricated atmospheric tanks which have been built and tested in accordance with UL 142, NFPA 30 & 30A, and API 650 and in accordance with all applicable local, state, and federal laws. In normal operation, dust and debris can accumulate in vent openings and block air passages. Certain atmospheric conditions such as a sudden drop in temperature, below freezing temperatures, and freezing rain can cause moisture to enter the vent and freeze which can restrict internal movement of vent mechanisms and block air passages. All storage tank vent air passages must be completely free of restriction and all vent mechanisms must have free movement in order to insure proper operation. Any restriction of airflow can cause excessive pressure or vacuum to build up in the storage tank, which can result in structural damage to the tank, fuel spillage, property damage, fire, injury, and death. Monthly inspection, and immediate inspection during freezing conditions, by someone familiar with the proper operation of storage tank vents, is required to insure venting devices are functioning properly before filling or unloading a tank.

Product Features

Standard Features

Outlet ports on either side of the airway for maximum venting

The cone shaped flash arrester prevents outside flames from entering the tank

Female NPT threads, or easy to install slip on style with set screw

Rain resistant design

Screens help prevent debris and insects from entering the airway


Construction Details

  • Body: Aluminum
  • Screens: 20 mesh stainless steel
  • Flash arrester: Anodized aluminum, perforated metal

Product Ordering Instructions

Figure Suffix Size Description Weight (lbs)
155FA 0500 AVAJ 2” Double Outlet Vent With Flash Arrester 1.5
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