Compensates for changes in tank level due to consumption, as well as temperature related expansion and contraction. Designed to prevent vacuum build-up during use, which can disrupt fuel delivery. Also doubles as a pressure release valve for the gas tank. Two screens provide a barrier to keep unwanted contaminants from entering the tank. An integral 5/8" hose barb securely connects vent hose at a 90° angle.
| Brand | Sea-Dog Line |
| A | 7/8" |
| B | 2-3/8" |
| C | 5/8" Hose |
| Case | 10 |
| Material | Chrome Brass |