VB80A-400-SS – Unloader Valve – 5800 PSI – 316 Stainless Steel
The Annovi Reverberi VB80A-400-SS is a premium 316 stainless steel unloader valve engineered for extreme-duty cleaning systems operating up to 5,800 PSI. Built for industrial operators, contractors, and facility managers, this valve delivers rugged durability, precise regulation, and global safety compliance.
Superior Engineering for High-Pressure Systems
Rated for 5,800 PSI and 21 GPM, the VB80A-400-SS is designed for some of the highest-pressure commercial and industrial applications. Its automatic bypass system instantly diverts flow when the spray gun is released, providing critical protection:
- Prevents catastrophic pump overpressure and premature pump failure.
- Reduces hose and fitting fatigue to extend component life.
- Stabilizes performance in multi-gun or high-output equipment setups.
- Improves operator safety by eliminating sharp pressure spikes.
Stainless Steel Advantage
The 316 stainless steel construction gives the VB80A-400-SS a decisive edge in harsh environments:
- Exceptional saltwater resistance for marine and offshore operations.
- Chemical resilience against acids, alkalis, solvents, and aggressive detergents.
- High structural strength for ultra-high-pressure applications.
- Long service life with reduced maintenance and downtime.
Certified for Global Compliance
This unloader meets strict international safety and performance standards, including:
- CE certification – verifying compliance with European safety requirements.
- ATEX certification – approved for use in explosive or hazardous environments.
Ideal for refineries, chemical plants, pharmaceutical operations, and regulated industrial facilities.
VB80A-400-SS | 5800 PSI 316SS Stainless Steel Unloader Valve
Seamless Integration
Built for professional-grade system adaptability, the VB80A-400-SS features:
- BSP-threaded connections for secure, leak-free installation.
- 21 GPM flow capacity suitable for multi-operator rigs and large-scale wash systems.
- Compact, heavy-duty design allowing installation in tight or complex configurations.
- Precision-machined internals for smooth, consistent performance across thousands of cycles.
Applications
- Extreme-duty industrial cleaning: refinery maintenance, oil & gas, mining.
- Marine operations: shipyards, docks, offshore platforms.
- Chemical processing: caustic wash systems, hazardous areas.
- Contractor rigs: multi-gun systems, high-demand fleet setups.
- Food and pharmaceutical facilities: environments requiring stainless steel components.
Why Choose the VB80A-400-SS?
- 5,800 PSI / 21 GPM rating – top-tier performance for extreme-duty applications.
- 316 stainless steel construction for maximum corrosion resistance.
- BSP-threaded connections for secure professional integration.
- CE and ATEX certified for use in globally regulated industries.
- Automatic bypass action protects pumps, hoses, fittings, and operators.
- Precision internals deliver reliable, long-term pressure regulation.
Key Features & Specifications
- Maximum Pressure: 5,800 PSI
- Flow Capacity: 21 GPM
- Construction: 316 stainless steel body and components
- Connections: BSP-threaded
- Certifications: CE and ATEX compliant
- Function: Automatic bypass for pump and system protection
VB80A-400-SS | 5800 PSI 316SS Stainless Steel Unloader Valve
Ideal Application Areas
- Extreme-duty industrial wash systems
- Marine and offshore wash bays
- Chemical plants and harsh-environment facilities
- High-performance contractor rigs
- Food and pharmaceutical processing environments





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