{"product_id":"yu5221-unloader-high-flow-53gpm-220opsi","title":"Yu5221 Unloader High Flow 53GPM 220OPSI","description":"\u003cp\u003e\u003cstrong\u003eYu5221 Unloader High Flow 53GPM 220OPSI is a professional-grade pressure unloaders from GP. In stock and ships same day from Sun Brite Supply in Gaithersburg, Maryland.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eUnloader for GP systems.\u003c\/p\u003e\n\u003cp\u003eThe unloader valve controls what happens when you release the trigger gun. It diverts water flow back to the pump inlet (or to a bypass) so the pump is not dead-heading against a closed system. Without a working unloader, the pump builds pressure with nowhere for the water to go. That kills pumps fast.\u003c\/p\u003e\n\u003cp\u003eA bad unloader also causes pressure spikes, surging, and difficulty pulling the trigger. If your pressure washer surges between high and low pressure, or if the trigger gun is hard to squeeze, the unloader needs attention.\u003c\/p\u003e \u003ch2\u003eKey Features and Specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eGPM Rating:\u003c\/strong\u003e Up to 53 GPM\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFits:\u003c\/strong\u003e GP unloaders\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Unloader\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAdjustable:\u003c\/strong\u003e Set your operating pressure by turning the adjustment knob\u003c\/li\u003e\n\u003c\/ul\u003e \u003ctable\u003e\n\u003ctbody\u003e \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUnloader\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax GPM\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e53 GPM\u003c\/td\u003e\n\u003c\/tr\u003e \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFits\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e \u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eUnloader valves must match your pump's PSI and GPM ratings. An undersized unloader cannot handle the flow. An oversized unloader will not regulate properly.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMatch the PSI rating to your pump's maximum PSI or lower\u003c\/li\u003e \u003cli\u003eMatch the GPM rating to your pump's flow rate\u003c\/li\u003e \u003cli\u003eMatch the inlet and outlet port sizes to your plumbing\u003c\/li\u003e \u003cli\u003eSome unloaders are pump-specific (built into the pump head). Others are external and inline.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you are not sure which unloader fits your pump, call us with your pump model number. We will match the correct unloader.\u003c\/p\u003e \u003ch2\u003eApplications and Use Cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePump protection\u003c\/strong\u003e by preventing dead-head conditions when the trigger is released\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePressure adjustment\u003c\/strong\u003e to set your working pressure for different surfaces\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacing a failed unloader\u003c\/strong\u003e on a machine that is surging or spiking pressure\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUpgrading\u003c\/strong\u003e from a lower-rated unloader to match a pump upgrade\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation and Maintenance Tips\u003c\/h2\u003e\n\u003cp\u003eInstall the unloader on the pump discharge port, before the high-pressure hose. Use Teflon tape on all threaded connections.\u003c\/p\u003e\n\u003cp\u003eTo adjust operating pressure, turn the adjustment knob clockwise to increase pressure and counterclockwise to decrease. Make small adjustments and test with a pressure gauge. Do not exceed the pump's maximum rated pressure.\u003c\/p\u003e\n\u003cp\u003eCommon unloader problems and fixes:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePressure surging:\u003c\/strong\u003e Worn piston or seat inside the unloader. Replace the repair kit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHard trigger pull:\u003c\/strong\u003e Unloader set too high or piston stuck. Adjust pressure down or rebuild.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNo pressure:\u003c\/strong\u003e Unloader stuck in bypass. Check for debris, rebuild, or replace.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePressure spikes:\u003c\/strong\u003e Bad spring or worn seat. Replace the spring and seat.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhy is my pressure washer surging?\u003c\/h3\u003e\n\u003cp\u003eSurging is almost always an unloader problem. The unloader is not transitioning cleanly between bypass and working modes. Try adjusting the unloader first. If adjusting does not fix it, rebuild the unloader with a repair kit. Replace worn springs, pistons, and seats.\u003c\/p\u003e\n\u003ch3\u003eHow do I set the right pressure on my unloader?\u003c\/h3\u003e\n\u003cp\u003eStart with the adjustment backed all the way out (lowest pressure). Squeeze the trigger gun and slowly turn the adjustment clockwise until you reach your target pressure. Use a pressure gauge at the gun to read the actual working pressure. Do not exceed your pump's rated PSI.\u003c\/p\u003e\n\u003ch3\u003eWhen should I replace vs rebuild my unloader?\u003c\/h3\u003e\n\u003cp\u003eIf the unloader body is cracked, corroded, or the threads are damaged, replace the whole unit. If it is just surging or leaking internally, a rebuild kit with new seals, springs, and a piston usually fixes it for a fraction of the cost of a new unloader.\u003c\/p\u003e\n\u003ch3\u003eWhere can I buy pressure washer unloaders near Gaithersburg, Maryland?\u003c\/h3\u003e\n\u003cp\u003eSun Brite Supply is located at 16620 Oakmont Ave, Gaithersburg, MD 20877. We carry a full selection of pressure washer unloaders for walk-in customers and ship nationwide. Local contractors in Maryland, Virginia, DC, and the Mid-Atlantic area can stop by for same-day pickup. If you are outside the area, order online at sunbritesupplymd.com and we will ship it out fast. Call us at 301-519-9274 if you need help finding the right part.\u003c\/p\u003e \u003ch2\u003eBefore You Order: What to Check\u003c\/h2\u003e\n\u003cp\u003eGetting the right part the first time saves you a return trip and more downtime. Before you add this to your cart, check these things:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eModel number:\u003c\/strong\u003e Find the model and serial number on your equipment data plate. Write it down before you order.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePort sizes and thread types:\u003c\/strong\u003e Measure your connections. A 3\/8 inch fitting will not thread into a 1\/4 inch port no matter how hard you try.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePressure and flow ratings:\u003c\/strong\u003e Make sure the replacement part is rated for your system's PSI and GPM. Under-rated parts fail fast.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOld part comparison:\u003c\/strong\u003e If possible, remove the old part and compare it side by side with the product photos and specs listed here.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStill not sure?\u003c\/strong\u003e Call us before you order. We would rather spend 5 minutes on the phone confirming fitment than process a return because the wrong part showed up.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy Buy Your Pressure Unloaders from Sun Brite Supply?\u003c\/h2\u003e\n\u003cp\u003eSun Brite Supply ships from our warehouse in Gaithersburg, Maryland. We stock the same brands the pros run. General Pump, Cat Pumps, AR, Honda, Hannay, Suttner, and more. No knockoffs. No mystery brands. Every part we sell has been vetted by people who work on this equipment every day.\u003c\/p\u003e\n\u003cp\u003eNeed help picking the right part? Call us at 301-519-9274. You will talk to someone who actually knows pressure washing equipment, not a script reader at a call center. We can verify fitment, suggest alternatives, and match you with the right part the first time. Our team has over 50 years of combined experience in the pressure washing industry. We deal with these machines daily and know which parts work and which ones cause problems.\u003c\/p\u003e\n\u003cp\u003eLocal to Maryland or the DMV area? Stop by our Gaithersburg location at 16620 Oakmont Ave for walk-in counter sales. We can pull parts, check fitment in person, and get you set up on the spot. Contractors across the Mid-Atlantic rely on Sun Brite Supply for same-day parts when they need them fast.\u003c\/p\u003e\n\u003cp\u003eWe carry over 2,700 pressure washing parts and accessories in stock. Pumps, hoses, fittings, nozzles, chemicals, engine parts, burner parts, and electrical controls. Browse our full catalog at sunbritesupplymd.com and order everything you need from one supplier. One order, one shipment, less downtime waiting on parts.\u003c\/p\u003e\n\u003cp\u003eMost orders ship the same business day when placed before 2 PM Eastern. We ship nationwide from Maryland, so whether you are in Virginia, Pennsylvania, DC, or across the country, you get your parts fast. We keep popular parts in stock so you are not waiting on backorders.\u003c\/p\u003e\n\u003cp\u003eShop online at sunbritesupplymd.com or call us directly at 301-519-9274. Over 2,700 parts ready to ship. We are here to help you keep your equipment running and your business moving forward.\u003c\/p\u003e \u003cp\u003eCheck out our unloader valves, repair kits, springs, and bypass fittings. We also carry pressure gauges and relief valves for your system.\u003c\/p\u003e\u003ch2\u003eRelated Parts \u0026amp; Equipment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/pressure-unloaders\"\u003eBrowse Pressure Unloaders\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/fittings\"\u003eFittings \u0026amp; Adapters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/pressure-washer-repair-parts\"\u003ePressure Washer Parts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sun Brite Supply","offers":[{"title":"Default Title","offer_id":45032493908168,"sku":"4458","price":783.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0517\/4827\/4376\/files\/04458_17463275-52e0-4316-98ad-907cc5d2bbc6.webp?v=1774231342","url":"https:\/\/sunbritesupplymd.com\/products\/yu5221-unloader-high-flow-53gpm-220opsi","provider":"Sun Brite Supply","version":"1.0","type":"link"}