Best Gas Pressure Washer Unloader Valves of 2025
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Gas pressure washer unloader valves are an essential component of any gas-powered pressure washer. They regulate the pressure of the water coming out of the pump and ensure that the machine operates safely and efficiently. These valves work by diverting the flow of water back into the pump when the trigger on the wand is released, relieving the pressure and preventing damage to the pump and other components. They come in a variety of sizes and designs to fit different models of pressure washers and can be easily replaced if necessary. A high-quality unloader valve can significantly extend the life of a pressure washer and improve its performance.
At a Glance: Our Top Picks
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9.8
#TOP 2
9.7
#TOP 3
9.5
Top 3 Gas Pressure Washer Unloader Valves
JIOTAR 7101359 Thermal Relief Valve
The JIOTAR Thermal Relief Valve is an essential component for maintaining your pressure washer's performance. It effectively prevents thermal damage to the pump by releasing hot water, allowing cooler water to flow in, which helps protect vital internal parts. This valve is compatible with a wide range of pressure washer models and offers easy installation, making it convenient for you to replace old or damaged valves. Made from durable materials, this valve is designed to withstand wear and tear, ensuring reliable long-term use for all your cleaning tasks.
Simpson Cleaning 7101359 Thermal Relief Valve for Gas Powered Pressure Washer Pumps
The Simpson Cleaning 7101359 Thermal Relief Valve (TRV) is a high quality replacement part for your pressure washer pump. It is designed to prevent heat damage to water seals and internal components by releasing hot water from the pump and allowing cool water to come in. With easy installation, you can quickly get back to your power washing projects. The TRV is compatible with most pressure washers that have 1/4-inch NPT. It comes with thread sealer already installed and is precision calibrated. Simpson replacement parts are known for their quality and are suitable for both commercial and residential pressure washers. Repair your pump with genuine Simpson components and save time and money.
Zeiboat 7101359 Thermal Relief Valve
The Zeiboat 7101359 Thermal Relief Valve is a high-quality replacement part for pressure washer pumps. With its 1/4" NPT fitting and durable brass construction, it ensures long service time and compatibility with most pressure washers. This thermal relief valve is designed to prevent thermal damage to water seals and other internal components by releasing hot water from the pump and allowing cold water to enter through the pump inlet. This feature not only protects the pump from overheating but also extends its lifespan. With the Zeiboat Thermal Relief Valve, you can quickly get back to your power washing projects without worrying about damaging your pressure washer.
Frequently Asked Questions (FAQs)
1. Can you run pressure washer without unloader valve?
In a pressure washer, water is pumped in faster than it's let out. This creates the high-pressure water we use to blast surfaces clean. However, if the pressure washer gun is disengaged, and there is no unloader valve to redirect the pressurized water, the pressure would continue to build.
2. How does a pressure washer unloader valve work?
The unloader diverts the flow of water from the outlet side of the pump back to the inlet side, causing water to flow in a loop back to the pump under virtually no pressure rather than to the nozzle under operating pressure. Flow may be directed back to the pump inlet or to a float tank or other type of reservoir.
3. What causes unloader valve failure?
Such a problem indicates the unloader valve is not properly recirculating water back into the pump. No pressurized water available – an unloader valve that is stuck in the bypass position will prevent water from entering the pressure hose and nozzle.
During our gas pressure washer unloader valve research, we found 24 gas pressure washer unloader valve products and shortlisted 3 quality products. We collected and analyzed 6,691 customer reviews through our big data system to write the gas pressure washer unloader valves list. We found that most customers choose gas pressure washer unloader valves with an average price of $57.75.
The gas pressure washer unloader valves are available for purchase. We have researched hundreds of brands and picked the top brands of gas pressure washer unloader valves, including JIOTAR, SIMPSON, Zeiboat. The seller of top 1 product has received honest feedback from 50 consumers with an average rating of 4.6.
Bryan Hicks is a professional gardener and a writer who lives in North Texas with his family and his dog. Bryan has spent more than half of his life surrounded by garden products. He has extensive experience in garden makeovers and maintenance and lawn care. His areas of expertise include outdoor decoration, gardening and garden design.