VRT3-310 4500 PSI Pressure Washer Unloader with Pressure Switch

For High-Performance Cleaning Systems

The VRT3-310 4500 PSI Pressure Washer Unloader with Pressure Switch is a top of the line pressure washer component built by Mecline to deliver reliability, safety and precision in high pressure systems. 4500 PSI, 10.5 GPM and 194°F rated, this unloader valve with pressure switch is for both commercial and residential cleaning equipment.

With dual 3/8" FPT inlet and bypass ports and 3/8" FPT outlet, this gives you more power, control and flexibility for a wide range of applications. Whether you are running a gas powered heavy duty pressure washer for industrial jobs or an electric pressure washer for light duty use, the VRT3-310 unloader is designed to optimize operation, protect your machines and extend overall equipment life.

Product Details

• Product: 310

• Inlet: Dual 3/8" FPT

• Bypass: Dual 3/8" FPT

• Outlet: 3/8" FPT

• Max GPM: 10.5

• Max PSI: 4500

• Max Temperature: 194°F

• MFG: Mecline

• Color: Black

Why VRT3-310 Matters

When operating at thousands of pounds per square inch (PSI), control of pressure is key to safety and performance. The pressure switch built into this unloader monitors the system, detects changes and responds to loads or sudden drops in fluid pressure. The switch helps activate or deactivate circuits, opens or closes contacts at the set point.

This combination of devices makes the VRT3-310 one of the most reliable solutions for high pressure systems, balances safety, power and cleaning efficiency.

Pressure, Switches, Control

In a pressure washer, the unloader regulates pressure. Without it, the machines would over run and damage the pump and motor. The pressure switch goes further, adds an electronic element that integrates with electric systems and contacts.For example when the trigger gun closes the unloader diverts flow back to the bypass and the pressure switch can activate or cut power to an electric motor. This prevents overheating, saves money and is safe during demanding tasks.

The difference between a mechanical only unloader and one with a pressure switch is night and day. By adding electrical contacts the VRT3-310 improves operation, reduces downtime and helps remove dirt, paint, mold and other debris from surfaces more efficiently.

For Multiple Applications

This unloader valve with switch is for a wide range of applications from light duty outdoor furniture cleaning to commercial buildings and concrete restoration.

• Residential Jobs: Pair it with a cold water pressure washer for patio cleaning, outdoor furniture or to remove dirt from driveways.

• Commercial Tasks: Great for commercial buildings, contractors can pressure wash siding, concrete or surfaces where tough stains need to be removed quickly.

• Industrial Systems: For industrial grade cleaning the 4500 PSI rating can handle gas and electric machines in demanding environments.

Whether paired with pressure washer hoses, professional nozzles or accessory devices the VRT3-310 gives you unmatched control for shop and field use.

Features

• High Pressure: Up to 4500 PSI, handles the toughest jobs with ease.

• Integrated Pressure Switch: Responds to set points, maintains contacts for safe and reliable operation.

• Versatile Ports: Dual 3/8" FPT inlet and bypass plus 3/8" outlet for easy connection to pressure washer hoses and accessories.

• Durable: Black sparing finish, corrosion resistant construction and rugged components for long term use.

• Temperature Range: Up to 194°F, compatible with cold water and hot systems.

Pressure Measurement and Technology

This unloader is based on classic devices that measure pressure like the bourdon tube, strain gauge or diaphragm process. Combined with electronic pressure switches it balances mechanical and electrical control.

Example: In a cold water pressure washer the process fluid creates force on a diaphragm. The resulting tension moves mechanical contacts and the electronic pressure switch responds at a defined set point. By multiplying the PSI rating by flow you can determine power requirements. For example 4500 PSI x 10.5 GPM ÷ 1450 = 32.5 HP. This shows how systems are sized and the benefits of using Giant level equipment in commercial and industrial applications.

Cleaning Performance

The VRT3-310 helps pressure washers remove dirt, strip paint, clear mold and blast away tough stains from all surfaces. From outdoor furniture to concrete it gives you the control to adjust PSI to the job.

Paired with the right nozzles this unloader gives you faster cleaning time, saves operators money and reduces fatigue. More precise regulate functions means light duty and heavy duty pressure washer jobs get done without damage.

Electronic Pressure Switch Benefits

An electronic pressure switch adds modern reliability. Unlike mechanical only switches electronic ones have tighter tolerances and can be adjusted to exact set points.

Benefits include:

1. More Power: Ensures the system can run at maximum output safely.

2. Contacts Reliability: Electrical contacts respond instantly when thresholds are reached.

3. Safety and Control: Prevents over-pressurization and keeps machines and operators safe.

The ability to activate or shut off electric power at a specific set pressure extends equipment life and improves cleaning results.

Commercial and Industrial Applications

Contractors and commercial users benefit most from this unloader with pressure switch. For example when cleaning commercial buildings PSI requirements can vary depending on the surface. The VRT3-310 allows you to adjust PSI set points precisely so you can clean efficiently without damaging.

In industrial applications it can be mounted directly into machines and integrated with gas or electric motors. The devices work seamlessly whether cleaning concrete, stripping paint or sanitizing surfaces exposed to vacuum processes.

Safety, Control and Regulation

Pressure washers are powerful machines and safety is key. The unloader relieves inlet pressure, protects pumps, motors and operators. With built in pressure switches the VRT3-310 enhances safety by shutting down electric circuits when PSI goes above the set point.

This type of control ensures equipment longevity while keeping jobs safe, effective and cost efficient.

Installation and Operation

The VRT3-310 can be mounted into existing systems. With 3/8" FPT ports it connects to pressure washer hoses. Once installed you can adjust PSI with the built in knob to match the job.

Add the VRT3-310 to your cart and order now. The included illustrated instructions will ensure every job is done correctly.

Why the VRT3-310

• 4500 PSI high pressure rated.

• Electronic pressure switch technology.

• Gas and electric pressure washer compatible.

• Commercial and light duty applications.

• Faster cleaning, saves time and money.

• Wide range of applications and surfaces.

The VRT3-310 4500 PSI Pressure Washer Unloader with Pressure Switch is the pressure washer accessory for homeowners and commercial users. Built by Mecline it combines rugged durability with electronic pressure switch technology for maximum performance on all cleaning jobs.

From cold water pressure washers on outdoor furniture to commercial buildings that need more power to strip paint, this unloader keeps your system running smooth. With electronic contacts, diaphragm process sensing and precise PSI set points it keeps your equipment safe and maximizes cleaning efficiency.

Add the VRT3-310 to your shop cart, order now and see the difference a professional grade unloader with pressure switch can make. Built for stock, engineered and designed for real world jobs this item is ready to help you run your machines at maximum output.