VRT100-190PS2 | 2800 PSI 1/2 NPT Unloader Valve with PS2 Control

VRT100-190PS2 Unloader Valve – Overview

The VRT100-190PS2 unloader valve delivers stable 2,800 PSI (190 bar) regulation with built-in safety monitoring for professional pressure-washer systems. Equipped with a yellow spring for consistent control, it automatically diverts flow to bypass the moment the trigger is released—protecting pumps, guns, hoses, and accessories from pressure spikes and heat. The integrated PS2 pressure switch provides a supervisory signal for alarms or automatic shutdowns. With rugged construction and 1/2 in NPT female ports, it installs cleanly on contractor, facility, and industrial rigs where uptime and safety matter.

What This Means for Your Rig

• Ideal for systems requiring interlocks, E-stops, or PLC oversight.
• Combines regulation + monitoring in one clean, low-leakpoint package.
• PS2 switch provides a clear on/off signal to controllers.
• Smoother trigger cycling and more consistent operating pressure.
• Simplifies commissioning, wiring, documentation, and maintenance.

Performance Specs

Quick Reference

• Max Pressure: 2,800 PSI (190 bar)
• Ports: Inlet / Outlet / Bypass – 1/2 in NPT female
• Flow Capacity: match to pump GPM for best regulation
• Spring: Yellow spring (190-bar class); adjustable
• Monitoring: Integrated PS2 pressure switch
• Function: Trapped-pressure unloader; automatic bypass
• Temperature: Up to 194°F (90°C) typical

Build & Materials

• Reinforced housing for durability under vibration and cycling.
• Precision-machined valve stack and robust control spring.
• Metal NPT-female ports for repeatable sealing and torque.
• Compact body for clean routing to gauges, reels, and return lines.
• Serviceable VRT100 wear parts familiar to most technicians.

Benefits & Differentiators

• Regulation + live pressure monitoring in one unit.
• Supports alarm or automated shutdown for safer operation.
• Stable 190-bar control with smooth trigger transitions.
• Reduced water hammer, heat, and hose whip.
• Cleaner plumbing with fewer adapters or tees.
• Fleet-friendly standardization across VRT100-series rigs.

Industries & Applications

• Industrial wash systems and plant bays
• Safety-compliant contractor rigs and mobile fleets
• Commercial facility maintenance
• Municipal / public works washdown
• Construction & rental equipment cleaning
• Agriculture & food-equipment washdown (verify chemistry compatibility)

VRT100-190PS2 Compatibility & Fit

Plumbing & Orientation

• Install downstream of the pump and upstream of hose or reel.
• Route bypass to tank when required for recirculation systems.
• Use high-pressure-rated thread sealants and verify torque.

Porting Standard

• All ports are 1/2 in NPT female.
• Use proper adapters when converting to BSP or quick-connect fittings.

Electrical Integration

• Wire PS2 switch to a control panel or PLC per schematic.
• Confirm voltage/current rating and NO/NC logic.
• Test shutdown & alarm behavior during commissioning.

Power Pairing

• Works with triplex pumps rated up to 2,800 PSI.
• Use with thermal relief, inlet filtration, gauge tee, and burst-rated hose sets.

Nozzle / Orifice Guidance

• Select spray tips sized for your pump GPM at target PSI.
• Adjust pressure only with trigger pulled and flow present.
• Verify all components are rated for spikes produced by turbo nozzles.

Setup, Service & Reliability

• Prime with clean water and purge air before start-up.
• Adjust only under flow to avoid false pressure readings.
• Inspect inlet screens and watch for chatter or pressure creep.
• Verify PS2 switch function during commissioning and routine checks.
• Use proper VRT100 wear parts for predictable service intervals.
• Maintain temperature, chemistry, and water quality within limits.

VRT100-190PS2 What’s Included

• VRT100-190PS2 unloader valve with yellow spring
• Integrated PS2 pressure switch
• Inlet / Outlet / Bypass ports (1/2 in NPT female)
• Basic installation & setup guidance