8mm 5/16" Barb Rollover Fuel Tank Breather / Vent Valve Inline Vertically Mounted In Blue


This product provides free ventilation until the fuel tank / cell becomes inclined to an angle of more than 90 degrees. In this situation a stainless steel ball (acting under gravitational forces) seals the vent shut preventing fuel from escaping through the ventilation system. This valve has been designed to mount inline VERTICALLY into a AN-6 section of pipework.

Fuel Tank Vent Valves allows the fuel tank to maintain a constant and safe status by minimising build up of pressure and allowing the tank to vent should a vacuum be experienced

When installed the valves are open to atmosphere so vapour can collect inside the vehicle. All installation should be piped to the outside of the vehicle or connected to a charcoal canister. For tarmac vehicles run the pipe to the top of the body and then down to a point just below the base of the tank. The valves should be positioned as close as possible to the rear of the tank so that under braking the fuel load will move towards the front of the tank and away from the valve.


 Male-half Dimensions:

Smallest Barb Outside diameter (mm): 9.40 

Largest Barb Outside diameter (mm): 9.50

Stem Outside diameter (mm): 8.40

Stem Length (mm): 14.00

Bore / Inside diameter (mm): 3.00


Female-half Dimensions:

Barb Outside diameter (mm): 9.00

Stem Outside diameter (mm): 8.10

Stem Length (mm): 11.60

Bore / Inside diameter (mm): 4.00

Automotive / Aerospace-quality Blue Anodised Rollover Vent Valve

Brand: Torques
Type: Fuel Filter 
Item SKU code: TQROV-8mm/8mm

Fitting Finish: Blue anodized
Fitting Material: Aluminium 
Quantity: Sold individually.

Quick Overview

Item SKU code: TQROV-8mm/8mm

Rollover Vent Valve, 8mm, Aluminum, Blue, Each

Also available in a weld on version. Ideal for welding onto a custom fuel tank

Please Note: There is a Maximum postage charge of £8.00 on any combined order for U.K based eBay members