T-style open vent used primarily on small storage tanks.
NOTE:Â Open vents will allow unrestricted evaporation of product.
Standard 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 Details
- Body: Aluminum
- Screens: 20 mesh stainless steel