WoHong Petrochemical International Department

Stage III Vapor Recovery Piping: HDPE Composite Pipe Solutions for Service Stations

Why Underground Piping Selection Matters in Stage III Vapor Recovery Stage III Vapor Recovery systems have become the backbone of emission control at modern service stations. These systems capture fuel vapors during vehicle refueling and return them to the underground storage tank, preventing volatile organic compounds from escaping into the atmosphere. While most attention goes […]

Stage III Vapor Recovery Piping: HDPE Composite Pipe Solutions for Service Stations Read More »

Transition Fitting and Adapter Installation for HDPE Composite Underground Piping at Fuel Stations

Introduction When building or upgrading underground fuel piping systems at service stations, the most technically demanding connections are often the so-called “transition points”—where a flexible HDPE composite underground pipe meets a rigid metallic tank stub, a dispenser sump entry, or a vent riser. Correctly specifying and installing transition fittings, adapters, and mechanical joints is essential

Transition Fitting and Adapter Installation for HDPE Composite Underground Piping at Fuel Stations Read More »

How to Select and Install Composite Pipes for Stage III Vapor Recovery Systems

1. Why Pipe Selection Matters in Stage III Vapor Recovery Stage III vapor recovery systems are designed to capture fuel vapors at the dispenser nozzle and return them to the underground storage tank (UST) during refueling. Unlike traditional fuel piping, vapor recovery lines operate under slight vacuum or low pressure and must remain absolutely leak-tight

How to Select and Install Composite Pipes for Stage III Vapor Recovery Systems Read More »

Field Cutting and Electrofusion Joining of Coiled Double-Wall Composite Pipes for Underground Fuel Piping

Field Cutting and Electrofusion Joining of Coiled Double-Wall Composite Pipes for Underground Fuel Piping When installing underground fuel piping systems at service stations, 75/63 double-wall composite coiled pipes offer significant advantages in reducing joints and installation time compared to straight 6-meter sections. However, field cutting and electrofusion joining of coiled composite pipes require specific procedures

Field Cutting and Electrofusion Joining of Coiled Double-Wall Composite Pipes for Underground Fuel Piping Read More »

Electrofusion Jointing Procedures for Underground HDPE Composite Pipe Systems at Fuel Stations

Introduction Electrofusion jointing is the most reliable method for connecting underground HDPE composite pipes at fuel dispensing stations. Unlike traditional butt fusion or mechanical couplings, electrofusion creates a homogenous, leak-proof joint that maintains the structural integrity of the entire pipe system. For gas station operators and installation teams working with Ai Yuan brand composite pipes

Electrofusion Jointing Procedures for Underground HDPE Composite Pipe Systems at Fuel Stations Read More »