VRT3-250PS6-PSET | 2000 PSI Preset Knob Unloader Valve Kit

VRT3-250PS6-PSET | 2000 PSI Preset Knob Unloader Valve Kit

• The AR VRT3-250PS6-PSET Unloader Valve is a precision-engineered hydraulic
  control device designed to regulate, stabilize, and protect high-pressure pump systems during
  operation.
• Factory preset at 2,000 PSI and equipped with a manual adjustment knob,
  it combines preset safety with on-site adjustability so operators can fine-tune output pressure
  for specific cleaning or spraying tasks.
• Developed by Annovi Reverberi (AR), a global leader in pressure control systems,
  it is part of the professional-grade VRT3 line known for long-term durability,
  consistent performance, and precise regulation in industrial and commercial environments.
• Constructed from corrosion-resistant brass with
  stainless steel internal components, it is built to withstand detergents,
  chemicals, and high-temperature water in demanding applications.
• Designed for both hot- and cold-water systems, it integrates easily into
  portable washers, industrial skids, and fixed installations where stable, safe pressure is
  critical.

VRT3-250PS6-PSET Pressure Control & System Protection

• Preset 2,000 PSI configuration protects pumps, hoses, and accessories by
  establishing a safe working limit right out of the box—ideal for professional and rental
  environments.
• The integrated adjustment knob allows easy, tool-free pressure calibration
  so users can adapt quickly to different nozzle sizes, surface types, and cleaning tasks.
• A precision-ground piston and spring mechanism delivers smooth, responsive
  pressure modulation, minimizing spikes that could damage seals, fittings, or internal components.
• When the spray gun trigger is released, the valve
  redirects flow through a bypass circuit to relieve system pressure and prevent
  hydraulic shock.
• Upon re-engagement, it instantly restores full working pressure, providing smooth
  transitions between active and bypass cycles and improving operator control.
• Internally balanced design helps reduce backpressure on the pump, improving
  efficiency and lowering energy consumption during extended use.

Build, Materials & Internal Design

• Brass housing provides thermal stability, corrosion resistance, and mechanical
  strength under constant cycling and high-pressure loads.
• Stainless steel spring and plunger assembly maintain consistent performance and
  calibration across repeated duty cycles.
• Precisely machined seat and sealing surfaces ensure leak-free operation and
  predictable pressure relief activation.
• Durable elastomer seals are formulated to resist chemical attack, pressure
  fatigue, and thermal cycling, maintaining sealing integrity over thousands of actuations.
• The internal bypass mechanism also helps reduce noise and vibration, creating a
  smoother, more controlled flow profile that enhances operator comfort and reduces system fatigue.

VRT3-250PS6-PSET Installation, Integration & Maintenance

• Compact design and standard porting dimensions allow seamless integration into
  existing pressure washer assemblies without major modification.
• Suitable for mobile rigs, stationary systems, and industrial skids, covering a
  wide range of professional cleaning setups.
• Minimal maintenance: periodic inspection and cleaning of the piston and valve
  seat keep the unit operating smoothly.
• Brass construction provides excellent resistance to corrosion and scale buildup,
  supporting long service life in continuous-use environments.
• The integrated control knob enables real-time adjustments on-site without
  downtime, allowing operators to respond quickly to changing pressure demands.

VRT3-250PS6-PSET | 2000 PSI Preset Knob Unloader Valve Kit

Applications & Operator Benefits

• Ideal for fleet wash stations, surface cleaning rigs, manufacturing maintenance
  setups, and other professional cleaning systems that require both safety and
  adaptability.
• Fast unloader response minimizes pressure lag and temperature rise during bypass,
  helping to prevent overheating and extend pump life.
• The 2,000 PSI factory preset helps protect inexperienced users from accidentally
  exceeding safe limits—well suited for commercial rental equipment and facility maintenance crews.
• Provides uniform cleaning power and stable system pressure across varying loads,
  maintaining optimal nozzle performance and consistent spray patterns.
• Reduced noise, vibration, and pressure fluctuation contribute to
  operator comfort and lower system fatigue over long shifts.

Reliability & Quality Assurance

• Each VRT3-250PS6-PSET is factory-tested by AR North America to verify activation
  pressure, bypass efficiency, and reseating accuracy.
• With proper care and periodic maintenance, the valve delivers
  years of dependable operation, keeping pumps and connected components running at
  peak efficiency.
• Represents the culmination of AR’s engineering expertise, combining proven
  mechanical reliability, operator convenience, and safety assurance in one compact assembly.
• With its robust brass body, stainless steel internals, integrated control knob, and
  2,000 PSI factory calibration, it stands as a trusted unloader choice for
  professional-grade pressure systems.