Compact 3-Inch Manual Tank Bottom Valve for Fuel and Chemical Transport Vehicles – HB804BS-80 Series
The HB804BS-80 is a versatile manual bottom valve designed for small and medium-sized tank trucks, chemical transporters, and hazardous liquid carriers. Positioned at the base of the tank, the valve disc remains fully enclosed inside the tank, while the outer valve body features a safety rupture groove. In case of sudden impact, the outer section breaks along this groove, preserving the tank’s overall integrity and effectively preventing fluid leakage.
Reliable Manual Operation for Controlled Flow
This 3-inch valve operates entirely through manual or mechanical control, offering simplicity and reliability without the need for pneumatic systems. Its optimized internal flow path ensures smooth fluid movement during filling or discharge, minimizing pressure drop and leakage risks. The anodized aluminum construction delivers lightweight durability, while optional VITON or Buna-N seals enhance chemical resistance and long-term performance.
Global Recognition and Naming Variations
Around the world, this type of manual tank bottom valve is recognized under multiple names. In North and South America, it is often referred to as a “3-Inch Manual Emergency Shut-off Valve,” while in Europe, it is called a “Manual Tank Bottom Valve.” In parts of Asia, it is commonly labeled as “罐底手动阀” or “油罐车底部手阀.” Despite differing terminology, its function remains the same: providing a safe, reliable, and secure interface for bottom-mounted tank valves.
Key Advantages
Compact 3-inch design suitable for small tankers and specialized vehicles
Fully mechanical control for secure and precise operation
EN 13308 compliant for international standard compatibility
Enhanced internal flow design for minimal leakage and maximum throughput
Corrosion-resistant anodized aluminum body
Optional chemical-resistant VITON or Buna-N seals
Round flanges on both tank and pipe sides for easy integration
Technical Highlights
Nominal Size: 3 inches
Working Pressure: 0.6 MPa
Maximum Flow Rate: 750 L/min
Operating Temperature: -20°C to +70°C
Manual Opening Mechanism
Compatible Medium: Gasoline, diesel, and light fuels
Optional Accessories for a Complete Installation
Tank-side flat flange: HBBVTSFL-80R
Tank-side welding sump with male bolts: HBBVTSFL-80RB
Tank-side welding sump with female nuts: HBBVTSFL-80RA
Pipe-side round flange: HBBVPSFL-80R
Round sealing gaskets (Buna-N or VITON) for tank and pipe connections
Why Choose HB804BS-80
The HB804BS-80 series provides tank builders and fleet operators a compact, dependable, and fully integrated bottom valve solution. Its durable construction, precise alignment, and leak-resistant design ensure long-term reliability in demanding transport conditions. This valve is especially suitable for standardized tank projects targeting international markets.
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