VHP80-800 | 12800 PSI Stainless Steel High-Pressure Unloader

OVHP80-800 12800 PSI Stainless Steel High-Pressure Unloader

• The Annovi Reverberi VHP80-800 is an ultra-high-pressure unloader valve
  engineered for cleaning systems operating up to
  12,800 PSI (≈800 BAR).
• Sits at the very top of the AR unloader range, built for hydro-blasting rigs, heavy
  industrial cleaning stations, and specialized contractor systems.
• Designed for applications where safety and equipment reliability
  are absolutely non-negotiable.
• Features 1/2″ NPTF connections for seamless integration with
  U.S.-standard ultra-high-pressure systems.
• Provides secure, leak-free, and maintenance-friendly installation in demanding
  environments.

Ultra-High-Pressure Performance

• Rated to 12,800 PSI (≈800 BAR) for extreme-duty cleaning and
  surface-prep applications.
• Engineered specifically for pumps operating at the upper limits of
  industrial cleaning power.
• Automatic bypass mechanism instantly redirects flow when the spray trigger is
  released to prevent catastrophic overpressure.
• Protects pumps, hoses, seals, and fittings from destructive pressure spikes and
  surge loads.
• Provides peace of mind in environments where even a momentary pressure surge can
  cause major equipment damage or safety incidents.

Stainless Steel Construction

• Constructed entirely from corrosion-resistant stainless steel for
  maximum durability and longevity.
• Designed to thrive in environments with constant saltwater spray,
  aggressive chemicals, and heavy vibration.
• Ideal for marine docks, shipyards, offshore rigs, and other harsh exposure areas.
• Stainless internals resist wear, pitting, and chemical attack far better than
  brass or plated-steel components.
• Reduces maintenance costs and downtime by preventing premature wear and leaks.

Knob-Free, Tamper-Resistant Design

• No external adjustment knob—factory-set pressure regulation for
  maximum consistency and safety.
• Eliminates the risk of mis-adjustment, stripping, or tampering by untrained users.
• Ensures uniform performance across operators, shifts, and job sites.
• Compact, clean design with fewer exposed parts for improved durability.
• Especially beneficial in large facilities or rugged field operations where
  reliability and repeatability are critical.

Applications

• Hydro-blasting & surface preparation – stripping concrete,
  removing coatings, and prepping steel surfaces.
• Marine & offshore cleaning – ship hulls, oil rigs, docks, and
  other saltwater-exposed structures.
• Refinery & chemical plant maintenance – descaling pipelines,
  cleaning tanks, and removing heavy residues.
• Industrial contractor systems – high-flow rigs designed for
  continuous operation at maximum output.
• Specialized facility cleaning – power stations, cement plants, and
  heavy manufacturing sites requiring ultra-high pressure.

Key Features & Specs

• Maximum Pressure: 12,800 PSI (≈800 BAR)
• Connections: 1/2″ NPTF for secure, U.S.-standard integration
• Construction: Full stainless steel housing and internals
• Design: Knob-free, tamper-resistant configuration
• Function: Automatic bypass for pump and operator protection
• Primary Applications: Hydro-blasting, industrial surface prep,
  marine cleaning, chemical plant maintenance, ultra-high-pressure contractor rigs

Why Choose the VHP80-800?

• Acts as a safety device, performance stabilizer, and system protector
  in one component.
• Provides maximum reliability in the most demanding ultra-high-pressure conditions.
• Extends pump and hose service life by eliminating damaging pressure spikes.
• Enhances operator safety and system stability in mission-critical environments.
• Minimizes downtime thanks to rugged stainless construction and
  maintenance-friendly NPTF integration.
• Delivers the safety, efficiency, and long-term value required by contractors,
  facility managers, and industrial operators working at the extreme edge of
  pressure cleaning performance.