Pipe Structure and Materials
- Primary fuel-container layer: The inner PE100 layer incorporates an EVOH barrier to limit gasoline vapor permeation and help protect the surrounding soil.
- Secondary containment layer: The outer PE100 layer provides a second level of containment. If the primary pipe is damaged, released fuel is retained within the interstitial space rather than entering the surrounding ground.
- Interstitial leak-detection space: A continuous space between the two layers can accommodate leak-detection cable or connect to monitoring equipment for ongoing leak detection.
Main Applications
- Pressure piping: The HDPE pipe with size Ø75/63 mm is ideal for submersible turbine pump systems, while the Ø65/54 mm pipe is suitable for suction-type fuel dispensers
- Fill and vapor recovery piping: Ø110/125 mm pipe can be used for tanker unloading and Stage III vapor recovery systems
- Vent piping: For underground storage tank breathing and vent lines
Features
- Environmentally friendly: Double-wall construction and the EVOH barrier reduce fuel permeation and provide secondary containment for leaks.
- Corrosion resistance and lower maintenance: The polymer construction resists corrosion and does not require the 3PE coating or cathodic protection used with steel pipe, helping reduce lifecycle maintenance requirements.
- Safe operation: The HDPE pipe meets antistatic conductivity requirements to help prevent static buildup. Electrofusion joining creates a continuous, leak-tight pipework system with strong resistance to pressure and vibration.
- Faster Installation: The pipework can be installed with sand or gravel backfill without a concrete trench, reducing excavation requirements and construction time
Certification and Standard
DESEINOR HDPE pipe is designed in accordance with EN 14125 for underground thermoplastic pipework systems at service stations.