Compact 4-Inch Manual Tank Bottom Valve (HB804AS-100) – For Fuel and Hazardous Liquid Tank Trucks
In the petroleum, chemical, and hazardous liquid transport industries, the reliability of a tank truck’s bottom valve is critical for overall vehicle safety and liquid handling stability. The HB804AS-100 manual bottom valve is specifically designed for 4-inch tank outlets, installed at the tank bottom, with the valve disc fully sealed inside the tank. The valve body features a safety shear groove: in the event of an unexpected impact, the outer part of the valve body breaks along the groove, ensuring overall tank sealing and effectively preventing leaks.
Global Names, Universal Design
This bottom valve is known by various names in different regions. In Europe and North America, it is often referred to as a “Manual Emergency Shut-off Valve” or “Bottom Loading Valve.” In Asia, manufacturers typically call it a “Manual Tank Truck Bottom Valve” or “Tank Base Hand-Control Valve.” In parts of South America, it is known as “Válvula Manual de Fondo para Camión Cisterna.” Despite the different terms, the core purpose remains the same: to provide a safe, reliable, and long-term stable interface for tank truck bottom valve installation.
High-Performance Features
Mechanical Operation Reliability: Fully manual operation ensures consistent performance without the need for air supply, suitable for all loading and unloading scenarios.
Optimized Flow Path: Ensures smooth loading and unloading while minimizing leakage.
Durable Materials: Valve body made of anodized aluminum for corrosion resistance and lightweight design. Optional Buna-N or VITON seals provide excellent chemical resistance and long-term durability.
Dual Round Flanges: Both tank-side and pipe-side flanges are round, enabling quick installation and precise alignment.
Global Standard Compliance: Conforms to EN 13308 and is compatible with TTMA-standard bottom valve interfaces.
Technical Specifications
Nominal Size: 4 inch
Working Pressure: 0.6 MPa
Maximum Flow Rate: 2500 L/min
Operating Mode: Manual
Temperature Range: -20°C to +70°C
Suitable Medium: Gasoline, diesel, and light fuels
Optional Accessories
Tank Side Flat Flange: HBBVTSFL-100R
Tank Side Welding Sump with Male Bolts: HBBVTSFL-100RB
Tank Side Welding Sump with Female Nuts: HBBVTSFL-100RA
Pipe Side Round Flange: HBBVPSFL-100R
Round Gaskets for Tank and Pipe Side (Buna-N or VITON)
Custom spare parts and materials available on request
Applications
The HB804AS-100 is widely used in fuel tankers, chemical tank trucks, hazardous liquid trailers, and specialized liquid storage and transport equipment. Its compact, lightweight, and reliable design makes it especially suitable for international standard tank truck projects, providing a solid foundation for transport safety and long-term vehicle operation.
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