Underground Fuel Piping Systems

UPP® Semi-Rigid Pipework Systems

Advanced Fuel Piping Solutions Supplied by General Petrol

General Petrol supplies world-class UPP® semi-rigid pipework systems, globally recognized as the benchmark for safe, reliable, and leak-free fuel transfer in underground and above-ground fuel installations. With over four decades of proven performance, UPP® is the world’s first electrofusion pipework system specifically engineered for petroleum and fuel applications.

Designed to meet the most demanding operational, environmental, and regulatory requirements, UPP® pipework systems deliver long-term asset protection, maximum safety, and superior chemical resistance across a wide range of fuels.

Proven Technology & Superior Construction

UPP® pipes are manufactured from PE100 high-density polyethylene and feature an advanced EVOH vapour barrier liner, providing exceptional resistance to hydrocarbon permeation and fuel vapours. This multi-layer construction ensures structural strength, chemical integrity, and long service life, even under extreme operating conditions.

The system is certified to EN 14125:2013 and is one of the few pipework solutions awarded the Class T1 temperature rating, enabling safe operation from -40°C to +50°C without compromising performance .

Leak-Free Electrofusion Welding

UPP® systems utilize a fully controlled electrofusion welding process, creating a homogeneous, monolithic joint between pipe and fitting. This method eliminates traditional leak paths associated with mechanical joints, gaskets, clamps, or bolts.

The welding process is:

• Fully automated and installer-independent

• Safe to perform in almost any climate and weather condition

• Designed to calculate welding parameters automatically based on pipe diameter and ambient temperature

The result is a permanently sealed, liquid-tight piping system with unmatched reliability.

Primary & Secondary Containment Systems

UPP® pipework is available in:

• Single-wall (primary) piping for direct fuel transfer

• Double-wall coaxial systems with integrated secondary containment for leak detection and environmental protection

These systems are ideal for modern fuel stations where environmental compliance, early leak detection, and regulatory assurance are critical.

Broad Fuel & Chemical Compatibility

UPP® pipework systems are approved for an extensive range of fuels and additives, including:

• Gasoline and diesel (including high-blend fuels)

• Ethanol blends up to E100

• Methanol blends

• Biodiesel up to B100

• Aviation and marine fuels (Jet A1, Avgas, JP8)

• Specialty fuels and additives such as MTBE and AdBlue® (with appropriate fittings)

This wide compatibility ensures future-proof infrastructure capable of supporting evolving fuel technologies .

Safety, Compliance & Environmental Protection

UPP® systems comply with internationally recognized standards including:

• EN 14125

• UL 971

• ASTM fuel compatibility requirements

Electrostatic safety has been thoroughly tested and validated. The system’s insulating material and low energy accumulation characteristics ensure it is inherently safe against ignition risks when installed according to grounding guidelines.

Why Choose UPP® Systems from General Petrol?

• Globally proven technology with decades of operational success

• Leak-free electrofusion joints for maximum safety

• Full compliance with international fuel, safety, and environmental standards

• Compatible with modern and future fuel formulations

• Supplied by General Petrol, a trusted partner in fuel station engineering and infrastructure solutions

General Petrol provides not only high-quality products, but also technical expertise, application support, and system integration know-how to ensure reliable, compliant, and long-lasting fuel installations.