VRT3-160V | 2400 PSI Unloader Valve Viton Seals Duty Rated
- The VRT3-160V unloader valve is built on Mecline’s proven VRT3 platform to deliver
consistent pressure control at 2,320 PSI (160 bar) and up to 10.5 GPM. - Upgraded with Viton O-rings for enhanced chemical and heat resistance in harsh cleaners
and elevated inlet temperatures. - Automatically diverts flow to bypass when the trigger is released, protecting pump seals
and plumbing from pressure spikes, heat build-up, and water hammer. - Yellow spring and large hand knob make fine adjustments quick and repeatable, while
the compact body fits neatly into carts, skids, and fixed installations.
What This Means for Your Rig
- Ideal for rigs running detergents, degreasers, or hot-water systems where seal durability
and uptime are critical. - Keeps output stable and responsive across different nozzle sizes and hose lengths, reducing
chatter and pressure drift. - Helps extend pump life by limiting heat, shock loading, and overpressure during trigger
cycles. - Supports crews that need a repeatable, easy-to-adjust unloader for varied jobs and operators.
Performance Specs VRT3-160V (Quick Reference)
- Max Pressure: 2,320 PSI (160 bar)
- Max Flow: 10.5 GPM
- Temperature: Up to 194°F (90°C) typical; Viton seals offer improved resistance to
heat and chemicals. - Ports:
- 3/8 in FNPT inlets (x2)
- 3/8 in FNPT outlet
- 3/8 in FNPT bypass ports (x2)
- Control: Adjustable pressure with hand knob; yellow spring for the 160-bar class.
- Typical Use: Trapped-pressure unloader for commercial cold- or hot-water systems
(verify seal suitability for chemicals and temperature).
Build & Materials VRT3-160V (Made to Last)
- VRT3 body engineered for long service life with robust internal components and
widely available wear parts. - Multiple 3/8 in FNPT ports provide flexible plumbing layouts for gauges, hose reels,
and tank returns. - Viton O-rings selected for resistance to many solvents and high-temperature wash solutions.
- Color-coded yellow spring simplifies identification and service in the 160-bar class.
- Ergonomic hand knob delivers smooth, incremental control so operators can dial in exact
working pressure.
Benefits & Differentiators (Why Choose This Model)
- Viton upgrade: enhanced chemical and heat resistance for aggressive cleaners and higher temps.
- Right-sized pressure band: optimized for systems in the 2,000–2,300 PSI class.
- Stable bypass behavior: reduces heat buildup and water hammer when the trigger cycles.
- Fast, repeatable setup: easy hand-knob adjustment across different tips and hose lengths.
- Service friendly: common VRT3 wear parts and documented repair kits keep maintenance predictable.
- Flexible plumbing: dual inlets and bypass ports simplify gauge tees, reels, and tank returns.
Industries & Applications
- Contract cleaners and fleet washing (box trucks, rentals, waste haulers).
- Municipal and public works (sidewalks, parks, parking garages).
- Food and agriculture (equipment washdown; confirm chemical compatibility with Viton).
- Industrial and chemical plants (degreasing; follow SDS and temperature limits).
- Hood and duct cleaning (grease remediation with hot-water systems where rated).
- Construction and heavy equipment (skid steers, mixers, excavators).
Compatibility & Fit VRT3-160V (Mounting / Plumbing / Nozzles)
- Plumbing & orientation: Install downstream of the pump and upstream of the hose or reel.
Route the bypass back to tank if your system requires recirculation. - Use 3/8 in FNPT fittings with thread sealants approved for high-pressure water service.
- System pairing: Ideal with triplex pumps delivering up to 10.5 GPM at or below 2,320 PSI on
gas-engine or electric builds. - Pair with thermal relief, inlet filtration, and burst-rated hose/wand assemblies for best results.
- Nozzle / orifice guidance:
- Select a spray tip sized to your pump’s GPM at the target PSI; correct orifice is essential for stable pressure.
- With water flowing (trigger open), turn the knob to reach working pressure, then lock the setting.
- Turbo nozzles can create pressure spikes; ensure all components are rated at or above system pressure with margin.
- Recommended accessories: high-pressure hose, thermal relief valve, inlet filter or screen,
and a pressure-gauge tee for accurate setup.
Setup, Service & Reliability
- Startup: Prime the pump with clean water, purge air, and verify supply flow before first start.
- Adjustment: Always adjust pressure with the trigger pulled to avoid false readings
and over-pressure. - Inspection: Check inlet screens regularly and watch for chatter or creeping pressure
as indicators of wear or contamination. - Service: Use the correct VRT3 repair kit on a preventive schedule based on duty cycle and chemistry.
- Operating limits: Keep temperature, chemical exposure, and water quality within manufacturer
limits to maximize seal life and efficiency.
VRT3-160V | 2400 PSI Unloader Valve Viton Seals Duty Rated
- VRT3-160V unloader valve with adjustable hand knob and Viton O-rings.
- 3/8 in FNPT porting (inlet, outlet, and bypass ports as listed).
- Basic installation and setup guidance from the manufacturer or distributor.
Notes
- Use the 2,320 PSI (160 bar) rating in titles and bullets, and list
3/8 in FNPT ports unless your specific SKU ships with alternate adapters. - Verify chemical compatibility of Viton with your detergents and confirm temperature limits
for your application before commissioning.





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