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VRT3-310EZ Unloader Made Ready Kit for Pumps Up to 4500 PSI – OEM Replacement Part

Original price $130.00 - Original price $130.00
Original price
$130.00
$130.00 - $130.00
Current price $130.00

Part Number: 6174
Category: Pressure Washer Parts → Unloader Valves → Unloader Kits
Type: VRT3-310EZ Unloader Made Ready Kit


The VRT3-310EZ Unloader Made Ready Kit (Part #6174) is a professional-grade OEM replacement unloader assembly designed to simplify the installation of a high-performance pressure washer unloader on pumps rated up to 4,500 PSI. Built around the proven VRT3-310EZ unloader design, this ready-to-install kit helps regulate system pressure, protect pumps from damaging pressure spikes, and improve overall pressure washer performance.


Key Features & Benefits

  • OEM replacement VRT3-310EZ unloader kit
  • Ready-to-install pressure washer unloader assembly
  • Rated for pumps up to 4,500 PSI
  • Supports flow rates up to 7.8 GPM
  • Automatically diverts water into bypass mode
  • Helps prevent damaging pressure spikes
  • Protects pumps and plumbing components
  • Simplifies pressure washer installation and repairs
  • Commercial-duty construction
  • Suitable for hot and cold water pressure washers
  • Reliable pressure regulation
  • Ideal for custom pressure washer builds and upgrades

Technical Specifications

Part Number: 6174

Model: VRT3-310EZ

Product Type: Unloader Made Ready Kit

Maximum Pressure: 4,500 PSI

Maximum Flow Rate: 7.8 GPM

Inlet Connection: 1/2" Female

Outlet Connection: 3/8" Female

OEM Replacement: Yes


What an Unloader Valve Does

The VRT3-310EZ unloader is designed to:

  • Regulate operating pressure
  • Divert water flow during trigger release
  • Protect pumps from excessive pressure buildup
  • Reduce wear on seals, hoses, and fittings
  • Improve equipment reliability
  • Extend pressure washer service life

When the spray gun is released, water is redirected through the bypass circuit until spraying resumes.


Common Applications

Commercial Pressure Washing

Ideal for:

  • Professional pressure washers
  • Mobile wash trailers
  • Fleet washing equipment
  • Property maintenance systems
  • Contractor cleaning rigs

Industrial Cleaning

  • Equipment washing
  • Manufacturing facilities
  • Heavy machinery cleaning
  • Industrial maintenance operations

Custom Pressure Washer Builds

  • Pump upgrades
  • Pressure washer rebuilds
  • Replacement unloader installations
  • Skid-mounted systems

Performance Benefits

  • Reliable pressure regulation
  • Improved pump protection
  • Reduced component wear
  • Consistent cleaning performance
  • Simplified installation
  • Long service life
  • Professional-grade durability
  • Enhanced system reliability

Signs an Unloader Kit Needs Replacement

Replace the unloader assembly if you notice:

  • Pressure fluctuations
  • Loss of operating pressure
  • Water bypass issues
  • Pump cycling problems
  • Difficulty adjusting pressure
  • External leakage
  • Reduced cleaning performance
  • Excessive wear or corrosion

Installation Notes

  1. Shut off power and relieve system pressure.
  2. Verify compatibility with pump flow and pressure ratings.
  3. Install using the proper plumbing connections.
  4. Apply thread sealant where required.
  5. Adjust pressure settings according to manufacturer recommendations.
  6. Verify bypass operation before use.
  7. Test for leaks and proper pressure regulation.

Important: Always ensure the unloader is properly adjusted and matched to the pump's flow rate and pressure output to maintain safe operation and maximize equipment life.


Maintenance Recommendations

  • Inspect the unloader regularly for leaks and wear.
  • Verify pressure settings during routine service.
  • Maintain proper water filtration.
  • Monitor bypass performance.
  • Replace worn seals and internal components as necessary.
  • Follow recommended maintenance intervals.

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