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Double Outlet Vent
One Year Manufacturer Warranty

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Morrison Brothers 155 Series Double Outlet Vent

.75in., 1in., 1.25in., 2in., or 3in.

Ships From Manufacturer

Select Model & Quantity:

Model # Description Price Qty
155---0100 AV 3/4 in., Threaded $17.54
155---0200 AV 1 in., Threaded $19.93
155---0300 AV 1.25 in., Threaded $23.63
155---0400 AV 1.5 in., Threaded $25.84
155---0500 AV 2 in., Threaded $31.10
155---0600 AV 3 in. Threaded Style $90.58
155S--0100 AV 3/4 in., Slip-On $20.16
155S--0200 AV 1 in., Slip-On $21.67
155S--0300 AV 1.25 in., Slip-On $25.71
155S--0400 AV 1.5 in., Slip-On $28.25
155S--0500 AV 2 in., Slip-On $33.81
155S--0600 AV 3 in., Slip-On $98.50
155BSP0200 AV 1 in., BSP $20.96
155BSP0400 AV 1.5 in., BSP $25.97
155BSP0600 AV 3 in., BSP $90.58
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Morrison Bros. Co. 155 Series Double Outlet Vent
Manuals and Information:
155 Series Spec Sheet

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

Features:
  • Outlet ports on either side of the airway for maximum venting
  • Rain resistant design
  • Screen helps prevent debris and insects from entering the airway
  • 155 has female NPT threads
  • 155S is slip on with a set screw
Construction:
  • Body: Aluminum
  • Screens: 20 mesh stainless steel

NOTE: Open vents will allow unrestricted evaporation of product.

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 mechnisms 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.