VX3-250 | 3630 PSI 303SS Unloader Valve Blue Spring Head Valve

VX3-250 | 3630 PSI 303SS Unloader Valve Blue Spring Head Valve

• The Annovi Reverberi VX3-250 is a professional-grade unloader valve
  designed to deliver consistent pressure regulation and long-lasting pump protection
  in high-performance cleaning systems operating up to
  3,630 PSI (≈250 BAR).
• Built from AISI 303 stainless steel, it combines superior corrosion
  resistance with rugged mechanical strength for demanding contractor, facility, and
  industrial applications.
• Equipped with a precision-calibrated blue spring, it maintains stable
  working pressure under continuous operation and automatically diverts water into bypass
  whenever the spray trigger is released.
• Compact in size yet engineered for heavy workloads, the VX3-250 offers an excellent
  balance of durability, corrosion protection, and smooth operation.

Performance & Control

Precision Regulation with Blue Spring Calibration

• Blue spring calibration is tuned for medium-to-high-pressure systems,
  delivering smooth, predictable performance in demanding cleaning environments.
• Stable pressure output maintains consistent flow and spray patterns
  across long duty cycles and changing operating conditions.
• Smooth bypass transition helps reduce pressure spikes that can cause
  hose whip, system shock, and operator fatigue.
• Protection under load keeps pumps within safe operating limits,
  supporting multi-gun setups and frequent stop/start cycles.
• Helps deliver better cleaning results, less downtime from equipment failures,
  and longer overall system service life.

Construction & Durability

Stainless Steel Durability for Harsh Environments

• Housing and internals are manufactured from AISI 303 stainless steel
  to thrive where brass or plated components might corrode or wear prematurely.
• Corrosion resistance makes it ideal for marine docks, chemical wash bays,
  and humid industrial settings.
• Mechanical durability withstands constant cycling, vibration, and
  exposure to detergents and harsh cleaning conditions.
• Stainless steel internals help reduce wear and extend valve life,
  lowering long-term maintenance costs.

Automatic Bypass Protection

• Functions as a primary safety device for pumps by diverting flow to
  bypass as soon as the spray trigger is released.
• Prevents overpressure spikes that can damage seals, pistons, and bearings.
• Reduces thermal stress by limiting recirculation heat during idle cycles.
• Protects accessories such as hoses, couplers, and spray guns from overload
  and excessive pressure.
• Helps avoid catastrophic failures and costly downtime by keeping the system within safe
  operating tolerances.

VX3-250 | 3630 PSI 303SS Unloader Valve Blue Spring Head Valve

Key Specifications

• Maximum Pressure: 3,630 PSI (≈250 BAR)
• Construction: AISI 303 stainless steel housing and internals
• Spring Design: blue spring for precise regulation in high-duty applications
• Function: automatic bypass for pump and system safety
• Form Factor: compact design for easy integration into professional rigs

Applications

• Professional cleaning systems – continuous-use contractor rigs and
  portable washers.
• Industrial facilities – maintenance departments needing reliable
  pump protection and stable pressure.
• Marine cleaning – shipyards, docks, and high-moisture environments
  where stainless steel is preferred.
• Fleet & vehicle washing – consistent regulation across heavy wash cycles.
• OEM & retrofit systems – compact form factor simplifies integration
  into new builds or upgrades.

Operator & System Benefits

• Reliable pump protection extends pump life by controlling pressure and reducing stress.
• Consistent cleaning results thanks to stable regulation and predictable spray quality.
• Corrosion resistance from stainless construction lowers replacement frequency.
• Lower maintenance costs due to rugged internals and smooth bypass action that
  minimizes wear.
• Compact, service-friendly design simplifies installation, service, and integration
  across multi-unit fleets.

VX3-250 | 3630 PSI 303SS Unloader Valve Blue Spring Head Valve

• The VX3-250 – Unloader Valve – 3,630 PSI – 303SS Blue Spring is engineered for
  professionals who need rugged stainless steel construction, precise pressure calibration, and
  reliable pump protection in a compact package.
• Rated for 3,630 PSI, it automatically diverts water into bypass mode to safeguard
  pumps, hoses, and accessories, while its blue spring calibration ensures stable regulation across
  demanding cleaning cycles.
• Whether installed on contractor wash rigs, fleet maintenance systems, industrial facilities, or
  marine environments, the VX3-250 delivers the strength, precision, and reliability
  required to protect equipment investments and maximize uptime.