VRT100-330PS2 | 4800 PSI 1/2 NPT Unloader Valve with PS2 Control

VRT100-330PS2 – High-Pressure Unloader Valve with Integrated PS2 Switch

Overview

The VRT100-330PS2 unloader valve combines high-pressure regulation at 4,800 PSI (330 bar) with integrated safety monitoring for professional pressure-washer systems. Equipped with a heavy-duty blue spring, it provides precise and repeatable pressure control while diverting flow to bypass the moment the trigger is released—protecting pumps, hoses, guns, and accessories from spikes and heat buildup.

The integrated PS2 pressure switch supplies a supervisory signal for panels or PLCs, enabling alarms or automatic shutdown when conditions approach unsafe limits. With 1/2″ NPT female ports and rugged construction, the VRT100-330PS2 installs cleanly on contractor, facility, and industrial rigs where uptime and safety both matter.

What This Means for Your Rig

For systems requiring interlocks, emergency stops, or PLC monitoring, the VRT100-330PS2 delivers both regulation and live pressure supervision in a single compact component. This reduces external plumbing, minimizes leak points, and simplifies wiring. Operators benefit from smoother cycling and stable pressure, while managers gain easier commissioning, documentation, and maintenance workflows.

Performance Specs (Quick Reference)

• Max Pressure: 4,800 PSI (330 bar)
• Ports / Connections: Inlet, Outlet, Bypass – 1/2″ NPT female
• Flow Capacity: Match to pump GPM (see nozzle/orifice guidance)
• Spring / Control: Heavy-duty blue spring; adjustable set pressure
• Monitoring: Integrated PS2 pressure switch for supervisory signaling
• Function: Trapped-pressure unloader; automatic bypass on trigger release
• Temperature: Up to 194°F (90°C); verify compatibility for hot water/chemicals

Build & Materials (Made to Last)

• Reinforced housing designed for industrial-duty cycles
• Precision valve stack for smooth, incremental pressure adjustment
• High-rate blue spring for stable regulation in the 4,800 PSI range
• Metal NPT-female ports for reliable sealing and repeatable torque
• Compact layout for clean routing to gauges, reels, and bypass lines
• Standardized VRT100 wear parts for predictable maintenance

Benefits & Differentiators (Why Choose This Model)

• Dual-function design: regulation + PS2 pressure monitoring in one body
• Improved system safety through alarm or auto-shutdown capability
• Stable pressure control at high working pressures
• Smoother bypass performance to reduce heat and water hammer
• Cleaner installs with fewer adapters, tees, and leak paths
• Fleet-friendly parts commonality across VRT100 platforms

Industries & Applications

• Industrial cleaning and regulated plant wash bays
• Contractor-grade mobile wash rigs with controls integration
• Commercial facilities and fleet wash stations
• Municipal and public works washdown systems
• Construction and heavy equipment cleaning
• Agricultural/food environments (verify chemical compatibility)

Compatibility & Fit (Mounting, Plumbing, Nozzles)

• Plumbing / Orientation: Install downstream of pump, upstream of hose/reel; bypass to tank if required
• Porting Standard: 1/2″ NPT female for inlet, outlet, bypass
• Adapters: Use rated fittings for BSP or quick-connect systems
• Electrical Integration: Wire the PS2 switch to panel or PLC; confirm voltage/current rating and NO/NC function
• Pump Pairing: Ideal for triplex pumps up to 4,800 PSI
• Nozzle / Orifice Guidance:
  • Match nozzle orifice to pump GPM at target PSI
  • Adjust pressure only with flow present (trigger open)
  • Verify all components are rated for potential turbo-nozzle spikes

Setup, Service & Reliability

• Prime system with clean water and purge air before startup
• Adjust pressure only with trigger pulled to avoid false readings
• Inspect inlet screens and filters regularly
• Monitor for chatter, drift, or creeping pressure—signs of wear or contamination
• Test PS2 switch function at commissioning and during routine maintenance
• Use VRT100 wear parts for predictable service intervals
• Maintain water quality, chemistry, and temperature within manufacturer limits

What’s Included

• VRT100-330PS2 unloader valve with integrated PS2 pressure switch
• 1/2″ NPT-female inlet, outlet, and bypass ports
• Basic installation and setup documentation

Notes

• List any included adapters or plugs on your product page to help installers prepare.
• Confirm seal set and temperature compatibility before using with hot water or aggressive chemicals.