The Giant 22913A Pressure Washer Unloader Valve is a high-performance heavy-duty bit of kit that's designed to give you super-reliable pressure control and flow management in professional pressure washer systems. You'll find this one, 22913A, in the Giant Pumps UL221 series - its a bit of a workhorse that can handle a significant flow quantity of 13 GPM and maximum operational pressure up to 3500 PSI. That makes it a pretty good all-rounder for a whole range of applications - from big residential jobs, through to commercial vehicle cleaning and multi-gun systems that need a bit more oomph for peak efficiency.
Giant Pumps made this one, and it's got a critical function: safeguarding your pump. When you release the spray gun trigger, the 22913A immediately knows to redirect the high-pressure water - up to 13 GPM - away from the discharge line and back to the pump inlet or a tank via the bypass port. This is super important, as it prevents the pump from running against a closed system, which'd otherwise cause damaging temperature spikes and component wear - keeping your gear running for the long term.
What this Giant Pumps 22913A brings to the table
The Giant Pumps 22913A is built with high-flow compatibility, consistent pressure stability, and durability in mind - all the things you need in a commercial environment.
It's a high-flow beast with consistent pressure: With a maximum GPM rating of 13 and a maximum PSI rating of 3500, this unloader is made to work with many high-output triplex plunger pumps. The 1/2" FPT INLET, 1/2" FPT Outlet, and 1/2" FPT BYPASS port sizing is crucial for handling all that flow, while cutting down on flow restriction and maxing out the hydraulic efficiency of your pressure washer system.
And it's all about that Orange Spring: The internal Orange SPRING is what makes this particular model tick. That spring provides the right amount of tension and responsiveness to give Giant Pumps the stable pressure regulation and rapid, reliable bypass actuation it needs. That colour coding's handy for identifying the right replacement or upgrade component for your system specs.
And it can handle the heat: This one's rated for a maximum temperature of 160°F - so it's happy with cold water cleaning, and it can even handle moderate hot water use without compromising the seals and components. That thermal resilience just adds to its overall durability.
Easy to use and service, too: The design is pretty simple and robust - so you can adjust the operating pressure when you need to, and the big port sizes make plumbing a breeze - getting your pump system up and running with high volume use in no time.
What else you need to know about this unloader valve
Here are the key specs and features you need to know:
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PRODUCT: 22913A
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MAX GPM: 13
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MAX PSI: 3500 PSI
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MFG: Giant Pumps
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INLET: 1/2" FPT
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OUTLET: 1/2" FPT
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BYPASS: 1/2" FPT
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SPRING: Orange
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MAX TEMPERATURE: 160°F
Getting it up and running
The Giant Pumps 22913A is built for easy install and integration - but just a reminder that with its high flow rating, you'll want to make sure all the accompanying hoses and fittings can handle the full 3500 PSI and are sized for 1/2" flow for safety and efficiency.
The quality and precision engineering that Giant Pumps are known for, is what makes the 22913A such a long-lasting performer. Not only will it give you dependable flow and pressure control, but it also protects your investment in that high-flow pump from taking a beating - which in turn makes it a wise investment to help your pressure washer system keep going strong for years to come.
This little gem is right here on the shelf and ready to roll - simply add the quantity you need to your cart and get checking out, we're ready to get your order shipped out to you.
