How to Select a Diesel Loading Arm
A diesel loading arm is a specialized loading arm designed for diesel fuel loading. First, let's briefly understand what a loading arm is: also known as a liquid loading arm, it primarily serves to connect chemical oil pipelines with the interface of tank trucks. The structure of the loading arm includes universal joints, enabling it to dock freely and maintain balance within its working envelope. More importantly, it uses seamless pipes and specialized sealing materials, maximizing safety and operability during material loading/unloading.
Diesel Characteristics
Diesel is a light petroleum product used as fuel for diesel engines, divided into two categories:
Light diesel: Boiling range approximately 180–370°C
Heavy diesel: Boiling range approximately 350–410°C
The primary use of diesel is for diesel engines in vehicles and ships. Compared to gasoline, diesel has a higher energy density and lower fuel consumption rate. Due to its low energy consumption, some small cars and even high-performance vehicles have switched to diesel.
Model Selection of Diesel Loading Arms
Initially, diesel loading arms adopted top-open loading, with the arm installed on a platform and the vertical pipe inserted into the top loading port of the tank truck. However, due to stricter national environmental and safety requirements in recent years, modern diesel loading arms universally use bottom loading for tank trucks, connected via dry disconnect valves. The typical model is AL2404.
Structural Components of Diesel Loading Arms
Swivel joint
Liquid phase pipeline
Balancer
Composite hose
Dry disconnect valve (imported brand)
Breakaway valve (optional)
