VRT3-160EZ – Professional Unloader Valve with EZ Start
Overview
The VRT3-160EZ unloader valve is built on Mecline’s proven VRT3 platform to deliver consistent, reliable pressure control at 2,320 PSI (160 bar) and up to 10.5 GPM. The integrated EZ Start feature briefly lowers system pressure during ignition, allowing engines and motors to come up to speed smoothly while reducing strain on seals and drive components. During operation, the valve diverts flow to bypass the moment the trigger is released—minimizing heat, chatter, and water hammer for predictable, stable pressure on every job.
What This Means for Your Rig
For contractor rigs, facility crews, and mobile wash systems, the unloader is the backbone of pressure stability and system safety. The VRT3-160EZ matches machines in the 2,000–2,300 PSI class, providing fast, intuitive pressure adjustment with its large hand knob and color-coded spring. By protecting pumps and preventing over-pressure events, it reduces downtime and helps maximize service life.
Performance Specs (Quick Reference)
- Max Pressure: 2,320 PSI (160 bar)
- Max Flow: 10.5 GPM
- Temperature: Up to 194°F (90°C)
- Ports: (2×) 3/8″ FNPT inlets, 3/8″ FNPT outlet, (2×) 3/8″ FNPT bypass
- Control: Adjustable pressure with hand knob; EZ Start reduces startup load
- Use Case: Trapped-pressure unloader for commercial cold/hot-water systems (verify seals)
Build & Materials (Made to Last)
- Durable housing and robust valve components for long service life
- Reliable spring control with color-coded identification
- Large, ergonomic adjustment knob for precise pressure tuning
- Multiple 3/8″ FNPT ports for flexible plumbing layouts
- Compact footprint ideal for skids, carts, and tight installations
- Widely available VRT3 wear parts and repair kits
Benefits & Differentiators (Why Choose This Model)
- EZ Start system reduces startup strain on engines, motors, and pumps
- Optimized pressure band for 2,000–2,300 PSI machines
- Smooth bypass transitions to minimize hammer and heat
- Fast, repeatable setup with hand knob and spring controls
- Service-friendly design with common VRT3 components
- Flexible plumbing options with dual inlets and dual bypass ports
Industries & Applications
- Contract cleaning and fleet washing
- Municipal and public works (sidewalks, parks, garages)
- Food and agriculture washdown (verify chemistry)
- Industrial cleaning and degreasing
- Hood and duct cleaning operations
- Construction and heavy equipment washdown
Compatibility & Fit (Mounting / Plumbing / Nozzles)
- Plumbing / Orientation: Install downstream of the pump and upstream of hose/reel; route bypass to tank if required
- Fittings: Use 3/8″ FNPT plumbing and approved high-pressure sealants
- Power Pairing: Matches triplex pumps up to 10.5 GPM at ≤2,320 PSI
- Nozzle / Orifice Guidance:
- Select spray-tip orifice based on pump GPM at target PSI
- Adjust working pressure only with flow present (trigger open)
- Confirm all components are rated for possible turbo-nozzle spikes
- Recommended Accessories: Burst-rated hose, thermal relief valve, inlet filtration, gauge tee
Setup, Service & Reliability
- Prime pump with clean water and purge air before startup
- Adjust pressure only with trigger pulled to prevent false readings
- Inspect inlet screens regularly and monitor for chatter or pressure creep
- Service with correct VRT3 repair kits as part of preventive maintenance
- Maintain proper water quality, chemistry, and temperature for seal longevity
What’s Included
- VRT3-160EZ unloader valve with adjustable hand knob
- 3/8″ FNPT inlets, outlet, and bypass ports
- Basic installation and setup instructions
Notes
- Ensure product title and bullets reflect the 2,320 PSI (160 bar) rating
- Confirm seal materials and temperature limits for hot-water or chemical applications





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