VRT3-310EZN | 4500 PSI EZ Start Unloader Valve New Cap Kit

VRT3-310EZN Unloader Valve – 310 Bar (4,500 PSI) with EZ Start

Overview

The VRT3-310EZN unloader valve is a high-pressure, EZ Start variant of the proven VRT3 platform, engineered for
stable regulation at 310 bar (approximately 4,500 PSI) with flows up to 10.5 GPM. This upgraded model
features a redesigned adjustment cap that improves service access and makes fine-tuning faster for operators and
technicians. During ignition, the EZ Start function temporarily lowers system pressure so engines and motors reach
speed with less strain—helping protect pump seals, couplers, and drive components. During operation, the valve
automatically diverts water to bypass the instant the trigger is released, minimizing heat, chatter, and water hammer
for consistent, all-day performance.

What This Means for Your Rig

For high-pressure contractor or industrial machines, the VRT3-310EZN provides smoother startups and easier
adjustments. The updated cap design simplifies commissioning, preventive maintenance, and in-field tuning.
Operators get a uniform feel across multiple rigs and hose lengths, while fleet managers benefit from predictable
setup, reduced downtime, and longer service intervals.

Performance Specs (Quick Reference)

• Max pressure: 310 bar (approximately 4,500 PSI)
• Max flow: up to 10.5 GPM
• Temperature: up to 194°F (90°C); confirm seal selection for hot chemical use
• Connections / Ports: 3/8 in NPT female (Inlet, Outlet, Bypass)
• Control: adjustable high-pressure spring class; EZ Start assists during ignition
• Special feature: redesigned adjustment cap for improved serviceability
• Typical use: trapped-pressure unloader for commercial cold- or hot-water systems

Build and Materials (Made to Last)

A reinforced VRT3 body, precision valve stack, and metal threaded ports provide long service life under continuous
cycling and vibration. The updated cap design gives better tool access and clearer adjustment feedback—reducing
service time. Standardized port locations support clean plumbing with gauge tees, hose reels, and return-to-tank
layouts. Shared VRT3 wear parts keep preventive maintenance simple and cost efficient across fleets.

Benefits and Differentiators (Why Choose This Model)

• EZ Start technology reduces startup load for smoother ignition
• New service-friendly cap speeds adjustment and verification
• High-pressure stability for demanding tools and long hose runs
• Smooth bypass behavior reduces heat, spikes, hose whip, and seal wear
• Fleet-friendly platform with shared VRT3 parts
• Standard 3/8 in NPT ports simplify plumbing and reduce leak points

Industries and Applications

• Industrial contractors and plant wash bays
• Mobile wash fleets and commercial facilities
• Municipal and public works washdown
• Construction and heavy equipment cleaning
• Agriculture and food equipment washdown (verify chemical compatibility)
• Rental yards and high-duty wash stations

Compatibility and Fit

Plumbing and Orientation

• Install downstream of the pump and upstream of hose or reel
• Route bypass back to tank when recirculation is required
• Use high-pressure thread sealant and confirm torque on metal fittings

Porting Standard

• Inlet, Outlet, Bypass: 3/8 in NPT female
• Use rated adapters when converting to BSP or other thread standards

Power Pairing

• Ideal for triplex pumps up to 10.5 GPM in the 4,000–4,500 PSI range
• Use with thermal relief valve, inlet filtration, gauge tee, and burst-rated hose/wand assemblies

Nozzle and Orifice Guidance

• Select a spray tip orifice matching pump GPM at target PSI
• Adjust only with the trigger open and water flowing
• Ensure all components are rated at or above system PSI—especially with turbo nozzles

Setup, Service, and Reliability

• Prime with clean water and purge air before startup
• Verify EZ Start behavior during commissioning
• Adjust pressure only with the trigger pulled
• Inspect inlet screens and monitor for chatter or pressure creep
• Use redesigned cap for precise adjustments and lock settings per SOP
• Maintain proper temperature, water quality, and chemical compatibility

What Is Included

• VRT3-310EZN unloader valve with EZ Start and redesigned adjustment cap
• Ports: 3/8 in NPT female (Inlet, Outlet, Bypass)
• Basic installation and setup guidance

Notes

• Use the 310 bar (approximately 4,500 PSI) rating in titles and bullets for accuracy
• Standardize catalog listings to 3/8 in NPT and specify any included adapters