VB80A-280-SS | 4500 PSI 316SS Stainless Steel Unloader Valve

VB80A-280-SS | 4500 PSI 316SS Stainless Steel Unloader Valve

• The VB80A-280-SS Unloader Valve from Annovi Reverberi is a heavy-duty
  stainless steel pressure control device engineered for professional cleaning systems
  that demand maximum durability, precision, and regulatory compliance.
• Rated for operation up to 4,500 PSI with a flow capacity of
  21 GPM, it is purpose-built to withstand continuous high-pressure
  workloads.
• Protects pumps, hoses, and accessories from damaging overpressure events while
  delivering steady, controllable cleaning power.
• Ideal for marine environments, chemical processing facilities, industrial wash
  stations, and contractor rigs exposed to harsh water, detergents, and caustic agents.

Engineered for Safety & Longevity

• Features an VB80A-280-SS automatic bypass mechanism that instantly diverts water
  flow when the spray trigger is released.
• Shields pumps from catastrophic overpressure that could cause costly failures or
  downtime.
• Maintains stable pressure cycles for hoses, guns, and accessories, reducing
  premature wear and extending component life.
• Enhances operator safety by eliminating dangerous pressure spikes at the source.
• Supports smooth idle performance and seamless transitions between active
  spraying and bypass modes.

VB80A-280-SS 316 Stainless Steel Advantage

• Constructed from premium 316 stainless steel for superior
  corrosion resistance in saltwater, chemical, and high-humidity environments.
• Provides greater structural strength and reliable sealing at higher PSI compared
  with brass or aluminum alternatives.
• Resists attack from industrial solvents, acidic cleaners, and aggressive detergents.
• Supports hygienic operation and chemical resistance required in
  food processing and pharmaceutical facilities.
• Delivers extended service life, reducing downtime and lowering long-term operating
  costs.

Certified Compliance

• Fully CE certified and ATEX compliant, meeting
  international safety and quality standards.
• Suitable for use in explosive-atmosphere and other high-risk
  environments where certified equipment is mandatory.
• Provides documentation and conformity required in regulated industries and audited
  facilities.
• Allows operators and OEMs to deploy the valve with confidence in global markets.

Performance & Integration

• BSP-threaded connections provide a secure, leak-free interface with
  professional high-pressure systems.
• 21 GPM flow capacity supports high-output pressure washers and
  multi-gun rigs.
• Precision-machined internals ensure consistent performance under repeated
  start–stop cycles.
• Compact yet robust form factor integrates easily into both new builds and retrofit
  projects.
• Serviceable design with available replacement kits extends operational life without
  full-unit replacement.

VB80A-280-SS Applications

• Marine cleaning: shipyards, docks, vessels, and offshore platforms.
• Chemical wash systems: industrial degreasing, tank cleaning, and
  process equipment washdown.
• Industrial contractors: heavy-duty rigs for construction, oil & gas
  operations, and large-scale cleaning projects.
• Food and pharmaceutical facilities: hygienic environments requiring
  stainless, compliant components.
• Facility maintenance: regulated plants where certified safety
  components are required.

Why Choose the VB80A-280-SS?

• Rated to 4,500 PSI and 21 GPM for demanding
  heavy-duty applications.
• 316 stainless steel construction delivers maximum corrosion
  resistance and structural strength.
• BSP-threaded connections ensure secure, professional-grade
  installations.
• CE and ATEX certifications provide global compliance and safety
  assurance.
• Automatic bypass operation protects pumps, hoses, and operators during idle
  cycles and trigger releases.
• Serviceable, long-life design improves cost efficiency over the life of the
  system.

VB80A-280-SS | 4500 PSI 316SS Stainless Steel Unloader Valve

Key Features & Specs

• Maximum Pressure: 4,500 PSI.
• Flow Capacity: 21 GPM.
• Construction: 316 stainless steel body and internals for extreme durability.
• Connections: BSP-threaded ports for reliable system integration.
• Certifications: CE and ATEX compliant for use in regulated and hazardous environments.
• Function: Automatic bypass regulation to protect pumps, extend equipment life, and maintain safe operation.