1947 Chevy C10, 1947 GMC, 1947-54 Chevy Trucks, 1948 Chevy C10, 1948 F1, 1948 GMC, 1949 Chevy C10, 1949 F1, 1949 GMC, 1950 Chevy C10, 1950 F1, 1950 GMC, 1951 Chevy C10, 1951 F1, 1951 GMC, 1952 F1, 1952 GMC, 1953 Chevy C10, 1953 Ford F100, 1953 GMC, 1953-1
1947 Chevy C10, 1947 GMC, 1947-54 Chevy Trucks, 1948 Chevy C10, 1948 F1, 1948 GMC, 1949 Chevy C10, 1949 F1, 1949 GMC, 1950 Chevy C10, 1950 F1, 1950 GMC, 1951 Chevy C10, 1951 F1, 1951 GMC, 1952 F1, 1952 GMC, 1953 Chevy C10, 1953 Ford F100, 1953 GMC, 1953-1

Rollover Safety Vent

A ball; a seat and a very good afternoon you never have to think about. Every fuel tank has to breathe. Pull fuel out without letting air in and the tank collapses on itself; heat it in the sun with no vent and it pushes fuel out of the first seal it finds. So you leave a vent open. Which is fine right up until the truck is on its roof and that same open port is pouring fuel onto hot exhaust. This is the part that decides which of those two things happens. A simple ball check valve: upright it vents freely; inverted the ball drops onto its seat and blocks the port. No electronics; no maintenance; nothing to fail quietly. There is a float inside as well; doing the unglamorous daily job - cutting down how much liquid gets pushed into the vent hose from slosh when the tank is full and the road is rough. 1/2 inch NPT thread; 5/16 inch hose barb. Thirty one dollars against the one scenario nobody plans for.

  • Seals if the truck goes over - the ball drops onto its seat and blocks the vent port before fuel can pour out.
  • Still vents normally - air moves in and out as the tank draws down and heats up; no vacuum collapse.
  • Anti splash when full - the internal float cuts how much liquid gets pushed into the vent hose on a rough road.
  • Nothing to maintain - a mechanical check valve with no electronics and no service interval.
  • Standard fittings - 1/2 inch NPT into the tank and a 5/16 inch barb out to the hose.

Install Level: Beginner - thread into the tank vent port and connect a hose

Ball check valve rollover vent; vents normally in the upright position and seals the vent port if the vehicle rolls.
Acts as an anti splash device when the tank is full.
Threads: 1/2 inch NPT. Hose barb: 5/16 inch.
This vent is already supplied with the Fat Fender Garage aluminum fuel tanks; buy it separately as a replacement or for another tank.
Vent hose is not included.

Boyd Welding
SKU: 32001 ISBN: 32001
$31.00
Expert Tech Support
ShopTested Parts
Worldwide Shipping
⚠️
WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead. Learn more.
Rollover Safety Vent
$31.00
Overview
Specifications
Tech Resources
Compatibility

The Rollover Safety Vent is a simple ball check valve device that will allow the tank to vent when in the normal operating position and also act as an Anti-Splash when your tank is full. In the event of an accident causing a rollover the ball will drop and block off the vent port so that fuel does not leak out.

Specs:

  • Threads: 1/2" NPT
  • Hose Barb: 5/16"
Store part number 32001
Vendor: Boyd Welding
Type: rollover safety vent; ball check valve
Threads: 1/2 inch NPT
Hose barb: 5/16 inch
Function: vents in the normal position; blocks the vent port in a rollover; anti splash when full
Internal float reduces liquid carry over into the vent hose during normal driving
Listed price 31.00 USD
Variant count: 2
No material; ball seat pressure or flow rate is published on this listing
Universal; fits any fuel tank with a 1/2 inch NPT vent port.
Supplied as standard with the Fat Fender Garage aluminum fuel tanks for 1953-60 and 1965-72 Ford trucks.
Tagged across the Ford; Bronco and Chevy truck generation buckets the store sells tanks into; the real fitment condition is the 1/2 inch NPT vent port.

SEARCH OUR STORE

Engines, A/C accessories, steering, brakes, & more. Get everything you need for your truck restoration at home.