Introduction: TankSafe Shield anti siphon device — your first line of diesel theft defence

The TankSafe Shield anti siphon device is an advanced fuel security system designed to prevent diesel theft through the filler neck. Built with a compact anti-siphon chamber and reinforced aluminium dome, it eliminates the easy access point that thieves target most. Whether your vehicles operate in high-risk urban zones or remote worksites, the TankSafe Shield anti siphon device keeps your diesel safe, operations running smoothly, and costs under control.

5 reasons to choose the TankSafe Shield anti siphon device

1. Proven Siphoning Protection
The short chamber design ensures that hoses cannot reach the diesel, blocking common siphoning attempts.

2. Effective Skimming Prevention
By minimising exposed fuel at the top of the tank, Shield stops thieves from taking small amounts unnoticed over time.

3. High-Flow Fuelling
Maintains refuelling speeds of over 120 L/min, keeping schedules on track.

4. Rugged Durability
Made from high-grade aluminium for resistance to tampering, corrosion, and wear.

5. Fast, Easy Installation
Fits directly over the existing filler neck using secure grub screws and adhesive — no welding or drilling required.

How the TankSafe Shield anti siphon device works

Fuel theft from trucks and heavy vehicles often begins at the filler neck. The TankSafe Shield anti siphon device solves this by creating a physical barrier inside the neck. Its compact chamber is just deep enough to allow rapid fuel flow during legitimate refuelling but too shallow for siphon hoses to reach the diesel surface. The reinforced dome base resists drilling and prying, giving your fleet a tamper-proof defence.

Real-world applications for the TankSafe Shield anti siphon device

• Logistics & Freight Fleets: Protect long-haul trucks parked overnight.

• Construction Equipment: Secure stationary machinery on open sites.

• Agricultural Vehicles: Defend tractors and harvesters from rural theft.

• Municipal Fleets: Keep buses, service trucks, and emergency vehicles fuel-safe.

In each scenario, Shield offers a low-maintenance solution that works silently in the background, freeing operators from constant monitoring.

Installation & compatibility of the TankSafe Shield anti siphon device

Installing the TankSafe Shield anti siphon device is quick, making it ideal for multi-vehicle rollouts. It’s compatible with most OEM fuel caps and requires no permanent modifications. The process involves securing the unit over the filler neck using grub screws and adhesive, ensuring it stays firmly in place even under heavy use.

Installation steps:

1. Remove existing cap and clean filler neck.

2. Place the Shield over the neck.

3. Apply adhesive and tighten grub screws.

4. Refit the OEM cap.

The benefits of preventing skimming and siphoning with the TankSafe Shield anti siphon device

Fuel theft isn’t just about direct losses — it also disrupts schedules, increases operating costs, and can damage company reputation. By preventing siphoning and skimming:

• Fleets see fuel cost reductions of up to 10–15%.

• Drivers avoid delays from theft-related refuelling.

• Environmental risks from spillage are reduced.

• The business gains a clear ROI within weeks.

Combining the TankSafe Shield anti siphon device with other TankSafe solutions

For full fuel tank protection, combine Shield with:

• TankSafe Optimum anti siphon device for 3-in-1 neck protection.

• TankSafe SenderSafe to protect sender units.

• TankSafe SealSafe for secondary access points.

• TankSafe DrainSafe to secure drain plugs.

Technical specifications

• Material: High-grade aluminium

• Flow Rate: 120+ L/min

• Installation Time: <10 minutes

• Compatibility: Fits most commercial diesel tanks with OEM caps

• Tamper Resistance: Reinforced dome, secure fit

Maintenance and longevity

The TankSafe Shield anti siphon device is designed as a fit-and-forget solution. Once installed, it requires no servicing other than routine checks during vehicle maintenance. Built from corrosion-resistant materials, it withstands harsh environments, temperature extremes, and prolonged outdoor exposure.

Frequently Asked Questions (FAQ)

Q1: Will the TankSafe Shield anti siphon device affect fuelling speed?
A1: No, it maintains high-flow rates to avoid operational delays.

Q2: Can it be installed on older vehicles?
A2: Yes, it’s compatible with most filler neck designs and OEM caps.

Q3: Is it a cost-effective solution?
A3: Absolutely — most fleets recover the cost in fuel savings within 1–2 months.

Q4: Does it protect against drilling attacks?
A4: Yes, the reinforced dome base is engineered to resist drilling.