3 Inch Surface-Oxidized Aluminum Pneumatic Bottom Valve (Tank Truck Submerged Valve for High-Flow Loading and Unloading)

3 Inch Surface-Oxidized Aluminum Pneumatic Bottom Valve (Tank Truck Submerged Valve for High-Flow Loading and Unloading)

The HB804 series pneumatic bottom valve, also known as the tank truck submerged valve, is a safety control device specifically designed for liquid loading and unloading at the bottom of fuel tanks. The valve disc is completely sealed inside the tank, while the outer valve body features a cutting groove. In the event of an unexpected impact or severe collision, the outer casing breaks along the groove, while the internal valve disc remains intact, effectively preventing fuel leakage and ensuring overall tank safety.

Constructed from surface-oxidized aluminum, the valve body offers excellent corrosion and chemical resistance, lightweight handling, and durability for frequent use. Pneumatic operation ensures precise and reliable control, while the optimized internal flow path minimizes leakage and supports high flow rates. Seals are available in Viton or Buna-N to handle diesel, gasoline, and light corrosive liquids safely.

Globally, this product is referred to by various names, including pneumatic bottom valve, pneumatic emergency shut-off valve, aluminum tank bottom valve, high-flow tank safety valve, tank truck pneumatic stop valve, emergency liquid shut-off device, and tank truck submerged valve. Regardless of terminology, the core benefits remain the same: safety, durability, efficiency, and reliability.

Key Features
Compliant with tank service equipment standards, ensuring safe liquid handling.
Pneumatic control for accurate and reliable loading and unloading.
Cutting groove design protects the internal valve disc from impact, preventing leakage.
High flow capacity with a 3-inch nominal size suitable for rapid transfer.
Surface-oxidized aluminum body provides corrosion and chemical resistance with long service life.
Sealing options include Viton or Buna-N for secure liquid transfer.
Standard pneumatic connection for easy integration with air control systems.

Optional Accessories
Compatible accessories include tank-side flanges, tank-side welded bases, pipe-side square flanges, and round or square gaskets. Custom parts and spare components are available upon request.

Typical Applications
Widely used in tank truck bottom unloading, fuel depot safety control, chemical tank liquid transfer, rapid loading/unloading platforms, and industrial high-flow liquid handling operations.