VHP60-400-SS | 5800 PSI 316SS Stainless High-Pressure Unloader

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VHP60-400-SS – Unloader Valve – 5800 PSI – 316 Stainless Steel

Overview

The Annovi Reverberi VHP60-400-SS Unloader Valve is a premium, extreme-duty pressure
control component engineered for high-pressure cleaning systems operating up to
5,800 PSI (≈400 BAR). Designed for professional, industrial, and marine
applications, this unloader valve is manufactured entirely from 316 stainless steel,
making it exceptionally resistant to corrosion, chemical attack, and long-term wear in
environments where brass or plated valves fail prematurely.

At the core of the VHP60-400-SS is a fast-acting automatic bypass mechanism that
protects pumps and system components by instantly diverting flow whenever the spray trigger
is released. This function stabilizes system pressure, reduces thermal buildup, and prevents
destructive overpressure events. For operators running high-output systems with long duty
cycles, this level of protection is essential to maintaining uptime, safety, and predictable
performance.

Engineered for Heavy-Duty Performance

With a robust 26 GPM flow capacity, the VHP60-400-SS is designed to support
large-scale cleaning systems that require both high pressure and high volume. This makes it
well suited for industrial wash bays, multi-gun systems, and contractor rigs where flow demand
is significant and system stability is critical.

• Supports high-output systems without pressure instability.
• Maintains smooth, accurate pressure regulation during extended operation.
• Precision-machined internals reduce vibration and hydraulic shock.
• BSP-threaded ports ensure secure integration into professional and international-standard systems.

Every internal component is manufactured to tight tolerances to ensure consistent performance
even when operating near maximum pressure and flow limits. This precision engineering allows
the valve to respond quickly to system changes while maintaining stable operating pressure
throughout long cleaning cycles.

Corrosion-Resistant 316 Stainless Steel Construction

The VHP60-400-SS is constructed entirely from 316 stainless steel, a premium alloy
known for its superior resistance to corrosion and chemical exposure. Compared to 303 stainless
or brass alternatives, 316 stainless steel offers enhanced protection against chlorides, acids,
and aggressive cleaning agents.

• Resists saltwater corrosion in marine, offshore, and dockside environments.
• Withstands chemical attack from solvents, detergents, and caustic solutions.
• Maintains structural integrity under constant moisture and temperature fluctuation.

This makes the VHP60-400-SS an ideal choice for shipyards, chemical processing facilities,
refineries, and industrial plants where exposure to harsh conditions is unavoidable. In these
environments, corrosion-related failures are a leading cause of downtime, and stainless-steel
components provide a clear long-term advantage.

Safety and System Protection

In high-pressure systems, uncontrolled pressure spikes during trigger release or flow
restriction can rapidly lead to pump overheating, seal failure, or catastrophic component
damage. The VHP60-400-SS addresses this risk with a rapid-response bypass system
that immediately diverts water flow when the spray gun is closed.

• Protects pumps, seals, pistons, hoses, and fittings from overpressure damage.
• Reduces thermal and mechanical stress during idle periods.
• Maintains smooth transitions between spray and bypass modes.
• Enhances operator safety by stabilizing system behavior.

By managing pressure safely and efficiently, the unloader extends pump service life, reduces
maintenance frequency, and helps prevent unplanned shutdowns. This is especially important in
24/7 operations or facilities where equipment downtime directly impacts productivity and costs.

Designed for Continuous-Duty Operation

The VHP60-400-SS is engineered for systems that operate for long periods under heavy load.
Whether installed on a stationary industrial wash bay or a high-output mobile contractor rig,
this unloader is built to handle frequent cycling, vibration, and sustained flow without loss
of performance.

Its compact yet robust design allows it to fit into tight equipment layouts while remaining
accessible for adjustment and service. This balance of durability and practicality makes it a
versatile solution for both OEM system builders and field-installed upgrades.

Applications

• Marine operations: Shipyards, offshore platforms, and dockside cleaning systems.
• Industrial plants: Refineries, chemical facilities, manufacturing and processing sites.
• High-output contractor rigs: Construction cleaning, fleet washing, and mobile systems.
• Chemical cleaning systems: Applications requiring stainless-steel compatibility.
• 24/7 industrial wash bays: Facilities demanding maximum reliability and uptime.

In these demanding environments, system components are pushed to their limits. The VHP60-400-SS
is designed specifically to meet these challenges, delivering dependable performance where
failure is not an option.

Key Features & Specifications

• Maximum Pressure: 5,800 PSI (≈400 BAR)
• Flow Capacity: 26 GPM for high-volume systems
• Construction: 316 stainless steel body and internal components
• Connections: BSP-threaded ports for secure, professional integration
• Function: Automatic bypass for pump and system protection
• Design: Precision-machined internals for stable, repeatable regulation

Why Choose the VHP60-400-SS?

• Exceptional corrosion resistance in harsh, chemical-heavy, or marine environments.
• High 26 GPM flow capacity for large-scale, high-output cleaning operations.
• Reliable pressure regulation during extended and continuous-duty cycles.
• Reduces maintenance costs by protecting pumps and downstream components.
• Compact, durable design that integrates easily into new or existing systems.

The Annovi Reverberi VHP60-400-SS sets the standard for extreme-duty stainless
steel unloader valves. By combining 316 stainless-steel construction, a 5,800 PSI pressure
rating, and high-flow capability, it delivers unmatched reliability, safety, and longevity.
For operators who demand uncompromising performance in the harshest environments, the
VHP60-400-SS is a proven, professional-grade solution.

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