首页 » News

Sizing and Layout for Underground Composite Pipe Fuel Systems (Ai Yuan)

Why Pipe Sizing and Layout Matter Most in Underground Fuel Systems Underground composite pipe systems move fuel from tank to dispenser every single day, and the geometry of that network decides far more than installation cost. Sizing, draw routing, and fitting placement influence flow pressure, vapor recovery efficiency, and long-term maintenance access. This article walks […]

Sizing and Layout for Underground Composite Pipe Fuel Systems (Ai Yuan) Read More »

Key Installation Steps for Underground Composite Pipes at Fuel Stations

Key Installation Steps for Underground Composite Pipes at Fuel Stations Proper installation is the single most important factor in the long-term performance of underground composite fuel pipes. At Luoyang Wohong Petrochemical, we produce the Ai Yuan brand HDPE/EVOH composite pipes, and our engineers see the same installation mistakes repeated on job sites year after year.

Key Installation Steps for Underground Composite Pipes at Fuel Stations Read More »

How HDPE-EVOH Composite Pipes Handle Stage III Vapor Recovery Line Duty

Why Stage III Vapor Recovery Lines Demand the Right Piping Material Stage III vapor recovery systems are the most demanding part of a modern gas station’s underground network. Unlike the fuel supply lines, vapor recovery lines carry air, fuel vapor, and liquid slugs in both directions, cycling pressure constantly through the day. Get the piping

How HDPE-EVOH Composite Pipes Handle Stage III Vapor Recovery Line Duty Read More »

Bend Radius and Electrofusion Fitting Selection for Stage III Vapor Recovery Return Lines

Bend Radius and Fitting Selection in Stage III Vapor Recovery Return Lines In a Stage III vapor recovery system, the return line is often treated as an afterthought behind the liquid fuel piping, yet it carries one of the most demanding media in the station: a saturated hydrocarbon vapor and condensate mixture that must travel

Bend Radius and Electrofusion Fitting Selection for Stage III Vapor Recovery Return Lines Read More »

Keeping the Stage III Vapor Recovery Return Line Clear: Flow, Slope, and Condensate Management with Composite Pipe

Keeping the Stage III vapor recovery return line clear and continuously wet is one of the most job-critical tasks at any retail fueling site. When condensate, liquid carryover, or fittings add unexpected restriction, a properly sized HDPE+EVOH composite return line can quietly degrade into vacuum loss, blower strain, and failed integrity tests. Why the Return

Keeping the Stage III Vapor Recovery Return Line Clear: Flow, Slope, and Condensate Management with Composite Pipe Read More »