AR51204 | VB80/150 Unloader Valve, Brass

AR51204 | VB80/150 Unloader Valve, Brass

The Annovi Reverberi AR51204 VB80/150 BSP Unloader Valve is a high-performance
pressure regulation component engineered for reliability, safety, and smooth operation in
professional cleaning systems. Rated for up to 150 BAR (≈2,175 PSI), it is built
to handle the rigorous demands of commercial and industrial pressure washers while providing
BSP-threaded connections for seamless integration with European and international plumbing
standards.

At its core, the AR51204 automatically diverts water into bypass whenever the spray trigger
is released or flow is interrupted. This keeps system pressure within safe limits, protecting
pumps, hoses, and fittings from damaging spikes during idle cycles and stop-start operation.

Pressure Regulation & Protection

• Automatic bypass function sends water to bypass when the gun is closed or flow is restricted.
• Prevents overpressure conditions that can cause seal damage, hose rupture, or pump failure.
• Maintains stable working pressure during continuous use in contractor-grade systems.
• Helps extend the service life of pumps, seals, hoses, and spray accessories by reducing stress.

Construction & BSP Compatibility

• High-grade brass body with precision internal components for long, reliable service.
• Engineered to withstand high-frequency cycling and constant pressure fluctuations in industrial duty.
• BSP threading provides a tight, leak-free connection for European and international plumbing layouts.
• Ideal for systems using BSP hose kits, pumps, and accessories without extra adapters.

Installation & Service

• Plug-and-play design simplifies installation on new or existing pressure washer frames.
• Compact housing fits easily into confined cabinets and mobile rigs where space and weight matter.
• Technician-friendly layout allows quick inspection, servicing, or pressure checks without removing the valve.
• Designed to minimize downtime in the field by enabling fast swap-outs and straightforward maintenance.

Key Specifications

• Model: AR51204 VB80/150 BSP Unloader Valve
• Maximum pressure: 150 BAR (≈2,175 PSI)
• Thread type: BSP (British Standard Pipe)
• Body material: Brass with precision-machined internals
• Function: Automatic bypass and pressure regulation for high-pressure pump systems
• Use profile: Continuous commercial and industrial cleaning duty

Typical Applications

• Contractor-grade cleaning rigs used for building, fleet, and surface cleaning.
• Industrial pressure washer systems in plants, factories, and processing facilities.
• Permanent wash bays and installations built around BSP plumbing standards.
• Equipment distributors serving global customers with BSP-based pump and hose packages.
• Mobile detailers and commercial operators needing a compact, rugged unloader valve for daily use.

AR51204 | VB80/150 Unloader Valve, Brass

• The AR51204 VB80/150 BSP Unloader Valve delivers reliable control, safety,
  and performance for heavy-use pressure washer systems. Its brass construction, automatic
  bypass protection, and BSP-threaded compatibility make it a smart choice wherever uptime,
  equipment protection, and international plumbing fit are critical.