Description
The FIG 155 and 155S are T-style open vents for small aboveground storage tanks, providing unrestricted airflow through dual outlet ports on either side of the airway. The 155 connects via female NPT threads; the 155S uses a slip-on connection secured with a set screw. BSP thread variants are available on 2″” and 3″” sizes. Open vents allow unrestricted evaporation of product and do not provide pressure or vacuum relief.
Features
- T-style design with outlet ports on either side of the airway for maximum venting
- Rain-resistant design
- 20 mesh stainless steel screen prevents debris and insects from entering the airway
- FIG 155: female NPT threaded connection
- FIG 155S: slip-on connection with set screw
- BSP thread variants available in 2″” and 3″” (155BSP)
- Aluminum body
- Available sizes: 3/4″”, 1″”, 1-1/4″”, 1-1/2″”, 2″”, 3″”
Applications
- Small aboveground storage tanks for petroleum products
- Tanks built and tested to UL 142, NFPA 30 & 30A, and API 650
- Installations requiring simple open vent connections without pressure or vacuum relief






