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Overfill Prevention System | Overfilling Fuel Tank

This system incorporates the latest fast response optic self-checking electronics to stop overfilling fuel tanks during bottom loading.

If the unit detects an overfill it will stop the flow, preventing a spill and saving the operator money.

It’s particularly effective when used alongside the long-established and widely used EMCO Wheaton bottom loading vapor recovery system.

Prevents Costly Overfills
Automatically stops product flow when maximum fill level is reached 

Fast Response Detection
Optic self-checking sensors provide rapid overfill protection 

Compatible with Industry Systems
Interfaces with all known optic loading control systems 

Built for Demanding Environments
Durable, ATEX-certified components designed for fuel transport

Key Specifications

Temperature Range (°C)

-20 - 70

°C

The system is composed of:

  • Probe/Cane
  • Socket
  • Grounding Bolt
  • Cable
  • Dummy (require for two-wire systems)

Once the system is installed and operational, an electronic sensor will automatically detect if fuel has reached maximum capacity during loading. If an overfill is found by the system, it will send a signal to stop the line’s flow. This is useful for bottom loading applications where it can be difficult to determine the volume of product when filling each compartment.

There’s an option to fit two or five wires. Two-wire systems are for tankers with up to eight compartments and are compatible with a 10-pin socket only, while the five-wire systems can accommodate to 12 compartments with 6- and 10-pin socket only.

Other features include:

  • Fluoro-elastomer seals compatible with petroleum products
  • Housing protection to IP66 with impact rating better than 09 (10 joule impact) for maximum durability
  • Compatible with all known systems on the market

The F2020 Overfill Prevention System is designed to protect fuel tankers during bottom-loading operations by automatically detecting high product levels and stopping the loading process before an overfill occurs.

  • Petroleum road tankers
  • Bottom loading terminals
  • Bulk fuel transport operations
  • Retail fuel distribution fleets
  • Rigid tankers
  • Tank trailers
  • Vapour recovery road tankers

This product is a key safety feature that prevents overfilling fuel tanks when bottom loading trucks. It’s used throughout the world by oil majors and transporters of fuel petroleum products.

Technical Information

 

Feature

Specification

Detection Technology

Fast-response optical sensor technology with self-checking electronics

System Monitoring

Continuous integrity verification to prevent undetected failures

Compliance

Compliant with EN 13922 and API RP1004 requirements

Hazardous Area Certification

ATEX certified for Zone 0 hazardous areas

Probe Construction

Borosilicate glass prism resistant to fuels and solvents

Housing Protection

IP66 enclosure protection with impact resistance greater than IK09

Construction Materials

Aluminium or stainless steel construction with Viton seals

Operating Temperature

-20°C to +70°C

Models Available

 

Model

Configuration

Description

F2020

Complete System

Complete optical overfill prevention system consisting of probe, socket, cable assembly, dummy plug and electronic control interface. 

F2020251

15" Probe

Optical overfill probe with a length range of 355 to 400 mm.

Available Probe Lengths

 

Probe Size

Length Range

7"

135 - 180 mm

12"

278.75 - 325.25 mm

15"

355 - 400 mm

Custom Lengths

Available on request

System Configurations

 

Configuration

Specification

2-Wire System

Supports up to 8 compartments and is compatible with 10-pin sockets. 

5-Wire System

Supports up to 12 compartments and is compatible with 6-pin and 10-pin sockets.

Ancillary Equipment

 

Accessory

Function

Overfill Probe (Cane)

Optical high-level sensor providing fast response overfill detection. 

Bottom Socket Box

Interface between loading rack equipment and tanker overfill system. 

Cable Assembly

Connects probes, socket and system electronics. 

Dummy Plug

Required component for certified system operation and compatibility. 

HLCO Interface

Electronic control interface used within the overfill prevention system.

Available Options

 

Option

Available Configurations

System Wiring

2-wire or 5-wire configuration

Probe Length

7", 12", 15" and custom lengths

Probe Construction

Aluminium or stainless steel options

Thread Options

M20x1.5, PG16 and NPT gland thread options

Combi Cabinet Integration

Compatible with master control cabinets, product selectors, vapour recovery and sequential air systems

ETOM Onboard Monitor

 

Feature

Description

Diagnostics

Red and green LED status indication

System Compatibility

Compatible with EN13922 and EQT sensors

Compartment Capacity

Supports tankers with up to 8 compartments

Power Supply

12 V / 24 V universal input

Ambient Temperature

-40°C to +70°C

Protection

IP66-rated corrosion-resistant housing

 

The F2020 Overfill Prevention System is a critical safety device designed to protect personnel, equipment and the environment. To ensure long-term reliability and compliance, EMCO Wheaton offers OEM replacement components, spare parts and technical support throughout the product lifecycle.

Lifecycle Benefits

  • Prevent costly overfill incidents
  • Protect personnel and the environment
  • Maintain system compliance and reliability
  • Reduce product losses during loading
  • Extend equipment service life
  • Support retrofit and new-build installations

Aftermarket Support

 

Support Service

Description

Replacement Probes

OEM optical probes available for maintenance and replacement. 

Socket Components

Replacement socket assemblies and spare parts. 

System Cables

Replacement cable assemblies for system servicing. 

Technical Support

Product selection, diagnostics and troubleshooting assistance. 

Retrofit Assistance

Support for upgrading existing tanker fleets to modern overfill prevention systems.

Download the F2020 Overfill Prevention System Flyer

989 KB, PDF

Download the F2020 Overfill Prevention System Installation Manual

1.5 MB, PDF

Download the WP Group Lubricating Oil Delivery System Operating Manual

1.8 MB, PDF

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