AIR RELEASE VALVE

1. Product Overview

An air release valve is an automatic device installed at the highest points of fuel pipelines. Its main function is to release air pockets that accumulate during system operation. Removing trapped air ensures stable flow, prevents pump cavitation, and guarantees absolute accuracy for measuring instruments such as flow meters.

2. Standard Technical Specifications

3. Why Use Air Release Valves in Fuel Systems?

In real-world operation, air entering pipelines can cause serious issues:

• Measurement accuracy: Without air release valves, air passing through flow meters (e.g., Series MP) is counted as liquid, causing false positive readings.
• Preventing water hammer: Compressed air pockets can generate extreme pressure surges, cracking pipes or damaging valves.
• Pump efficiency: Removing air prevents pumps from running dry or losing flow due to suction-side cavitation.

4. Key Features

• Automatic operation: The valve releases air when accumulation occurs and closes automatically when liquid reaches the chamber, requiring no manual intervention.
• Anti-spill design: Float and Viton gasket system ensures only air escapes, with zero fuel leakage to the environment.
• High durability: Valve body withstands pressure shocks and harsh depot conditions.
• Easy maintenance: Simple structure allows quick removal of the cover for cleaning floats and gaskets without cutting the pipe.

5. Practical Applications

• Highest pipeline points: Installed at upward bends where air commonly accumulates.
• Before flow meters: Combined with air separators to ensure pure liquid enters the meter.
• After pumps: Removes bubbles caused by cavitation or suction of air from underground tanks.
• Pipeline ends: Ensures smooth flow throughout long-distance transport from depots to filling stations.