
GO Fill|VAS-80
GO FILL ANTI SYPHON VALVE DN80 (3") Flanged VAS-80
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Email sales@goind.com.au or call 07 3204 2240 for live availability.
Ships from Brisbane warehouse. Standard delivery 2-5 business days Australia-wide.

STOP FUEL THEFT WITHOUT COMPLICATED PLUMBING
Flanged anti-syphon valve for DN80 (3") tank openings. Prevents fuel theft and unintended drainage when the tank is stored or transported.
One job, done simply
You've got a tank on the back of the ute. Someone can syphon it overnight if they want to. This valve screws into the DN80 opening and blocks reverse flow. Fuel goes in when you're filling. Nothing comes out when the hose disconnects. No wiring, no air lines, no fuss.
Mechanical, not electronic
Spring-loaded flap opens under fill pressure, closes when pressure drops. That's the whole mechanism. It won't fail because a relay corroded or a sensor got dusty. It sits in the tank opening and does one thing reliably: stop flow in the wrong direction.
Features & Benefits
Key Features
- DN80 (3") flanged connection
- Mechanical one-way valve
- No power or air supply needed
- Blocks syphoning when hose disconnects
- Fits standard tank openings
- Compatible with diesel, petrol, waste oil
Benefits
- Stops fuel theft via syphon hose
- Prevents accidental drainage during transport
- No wiring or compressor to install
- Fits existing tank without custom welding
| Connection | Flanged to suit tank opening |
| Dimensions | DN80 (3") |
| Material | Compatible with diesel, petrol, waste oil |
| Function | One-way valve blocks reverse flow |
| Operation | Mechanical, no power or air supply required |
| Application | Fuel tanks on utes, trailers, service vehicles |
Shipping & Dimensions
Ships from Brisbane warehouse. Standard delivery 2-5 business days.
Downloads
Compatible Products
Frequently Asked Questions
Can't find your answer?
Contact UsWhat is the GO Fill Anti Syphon Valve DN80?
A mechanical valve that screws into DN80 tank openings and stops fuel being syphoned out. It opens during filling, then closes when the hose disconnects.
Does it need power or air to work?
No. It's a spring-loaded mechanical valve that operates on fuel flow and pressure. No electrical or pneumatic supply required.
Will it fit my tank?
It suits standard DN80 (3") flanged openings. Check your tank flange diameter and bolt pattern before ordering.
Can I use it with petrol as well as diesel?
Yes. The valve is compatible with diesel, petrol, kerosene, and light oils. Not recommended for aggressive chemicals.
What warranty and support do I get?
12-month warranty covers manufacturing defects. Seals and springs are consumables. For fitment questions or bulk orders, call 07 3204 2240 or email sales@goind.com.au.











