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APS PartsSKU: VRT3-310

UV-VRT3-310

$64.99

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Overview

The UV-VRT3-310 is a pressure-adjustable unloader valve rated to 4500 PSI and 10.5 GPM, without the easy-start feature. When you release the trigger gun, the valve diverts water flow into bypass so the pump isn't deadheaded against a closed gun; it responds to the pressure or flow change and re-opens the circuit the moment you pull the trigger again. The adjustment knob lets you dial working pressure up or down without swapping nozzles. Plumbing is straightforward: two 3/8" female inlets, a 3/8" outlet, and two 3/8" female bypass ports, with a max water temperature of 194°F. A solid fit as a replacement unloader on gas or hot-water machines running within its pressure, flow, and temperature ratings.

What's included

  • Rated to 4500 PSI max and 10.5 GPM max flow
  • Adjustment knob for variable pressure setting
  • Diverts water to bypass when the trigger gun closes, protecting the pump
  • Dual 3/8" female inlets and dual 3/8" female bypass ports
  • 3/8" outlet
  • Handles water temperatures up to 194°F
  • Standard (non-easy-start) design with black spring

Specifications

Max PSI
4,500 PSI
Max GPM
10.5 GPM
Inlet
2 x 3/8" F
Outlet
3/8"
Bypass
2 x 3/8" F
Max Temperature
194°F
Spring Color
Black
Pressure Adjustment
Knob

Frequently asked questions

No — the UV-VRT3-310 is the version without the easy-start feature. If your engine needs pressure relieved in the line to pull-start easily, look for an easy-start unloader instead; otherwise this standard version does the same bypass job.

It fits machines running up to 4500 PSI, 10.5 GPM, and 194°F water with 3/8" plumbing. Check your pump's pressure and flow ratings and your port sizes — it has two 3/8" female inlets, a 3/8" outlet, and two 3/8" female bypass ports.

An unloader valve diverts water into bypass when you release the trigger gun, so the pump keeps circulating water instead of building pressure against a closed valve. Unloaders respond to either a pressure increase or a flow change, and this one also adjusts working pressure via its knob.

Yes — the UV-VRT3-310 has an adjustment knob for variable pressure, so you can set working pressure below the machine's maximum. Never adjust it above the pressure rating of your pump, hose, or gun.

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