VHP39 | 5650 PSI High-Pressure Adjustable Unloader Valve Unit

VHP39 – Unloader Valve – 5650 PSI

The Annovi Reverberi VHP39 is a heavy-duty unloader valve engineered for extreme-pressure cleaning
systems operating up to 5,650 PSI (≈390 BAR). Purpose-built for industrial and contractor
applications, it delivers the critical function of diverting water to bypass mode whenever the spray
trigger is released, protecting pumps, hoses, and accessories from catastrophic overpressure.

While compact in size, the VHP39 is a true workhorse valve—manufactured with high-strength housing
and precision-machined internals to ensure durability, stability, and long service life even under
punishing workloads. Its dependable regulation provides both operator safety and system efficiency,
making it a trusted solution in industrial wash bays, mobile rigs, and contractor systems where
uptime and reliability are essential.

Maximum Pressure Protection

At pressures exceeding 5,000 PSI, the stakes are high. Pumps, fittings, and accessories face
increased risks of seal damage, hose fatigue, and even component failure when exposed to unregulated
surges. The VHP39 mitigates those risks by automatically rerouting water into bypass mode the moment
spray ceases, instantly relieving dangerous pressure buildup.

This rapid response prevents pump overheating during idle cycles, reduces vibration and mechanical
stress, and ensures smoother operation across the system. For contractors and cleaning professionals,
this translates to lower maintenance costs, longer pump lifespan, and improved daily efficiency.

Rugged Construction for Harsh Environments

The VHP39 is built with industrial-grade housing and reinforced internal components to stand up to
extreme workloads and frequent cycling. Its robust build makes it equally effective in stationary
industrial installations and mobile rigs where equipment is subject to vibration, weather, and
constant transport.

By combining compact size with rugged design, the VHP39 offers installation flexibility without
sacrificing performance. It integrates seamlessly into a wide range of cleaning system layouts and is
service-friendly for contractors and technicians tasked with routine maintenance.

Consistent Regulation and Operator Confidence

A key advantage of the VHP39 is its ability to maintain stable, predictable pressure regulation at
system extremes. Contractors and facility operators can trust that system pressure will remain within
safe limits, even as demands shift between continuous spray and idle cycles.

For operators in industries where safety compliance and equipment uptime are mandatory, the VHP39
delivers peace of mind. Its precise regulation minimizes system shocks, reduces downtime due to pump
repair, and ensures consistent cleaning power—whether the job involves concrete equipment washdowns,
fleet vehicle cleaning, or industrial surface preparation.

Typical Applications

The VHP39 unloader valve is designed for demanding, high-pressure cleaning environments, including:

• Industrial Cleaning Facilities – wash bays, processing plants, and equipment cleaning stations
• Contractor Rigs – mobile units operating at extreme PSI levels for construction, concrete, or surface restoration
• Mobile Wash Systems – trailer-mounted or truck-mounted rigs serving fleets, municipalities, and remote job sites
• Heavy Equipment Maintenance – removing hardened dirt, grease, and residues from construction or agricultural machinery
• Marine and Offshore Systems – corrosion-resistant builds integrated into dockside or offshore cleaning stations (with proper fittings and stainless piping)

Key Benefits of the VHP39

• Rated up to 5,650 PSI (≈390 BAR) for extreme-duty systems
• Compact yet rugged housing designed for continuous use
• Automatic bypass function instantly prevents overpressure and pump strain
• Durable internals engineered for frequent cycling and long-term reliability
• Versatile integration into mobile rigs, contractor setups, or stationary industrial wash bays
• Extended pump life and reduced downtime from costly overpressure damage

Key Features & Applications

• Pressure Rating: 5,650 PSI maximum
• Construction: Rugged industrial housing with precision-machined internals
• Function: Automatic bypass for pump protection and operator safety
• Design: Compact, service-friendly build for easy installation
• Applications: Industrial cleaning facilities, contractor rigs, mobile wash systems, heavy-duty fleet and equipment washing

✅ The VHP39 stands out as a compact but high-capacity unloader valve designed to manage the extreme
loads of 5,650 PSI systems. For contractors, facility operators, or industrial users who cannot risk
downtime, it provides unmatched safety, pump protection, and long-term reliability.