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· Updated Aug 4, 2026
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When a commercial restroom begins to fail, the culprit is often a worn-out flush valve or a leaking faucet. For facilities managers and maintenance professionals, sourcing the correct components is critical to preventing water waste and avoiding costly emergency repairs. Zurn is a cornerstone brand in commercial plumbing, known for high-traffic durability. However, because their product line spans everything from manual flushometer valves to sensor-operated faucets and urinal flush valves, selecting a repair kit isn't as simple as grabbing the first box on the shelf. A precision-matched kit ensures that seals, springs, and diaphragms fit perfectly, maintaining the high-pressure performance these fixtures require.
Editor's Choice
Our Top Picks for Zurn Repair Kits
The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.
Comes complete with #1 and #2 check seal rings, check springs, relief valve rubber components, relief valve spring, O-rings, and lubricant
Lead-free law compliant. Adaptable design fits 1/4”-2” 975XL and 975XL2 Reduced Pressure Principle Backflow Preventers. Accessories allow for speedy repairs and cost savings by avoiding full replacement
Replacing an entire backflow preventer assembly is an expensive headache that most property managers want to avoid. This Zurn Wilkins repair kit solves that problem by providing every critical internal component needed to restore your 975XL or 975XL2 reduced pressure principle units to peak performance. Instead of a full system overhaul, you can perform a targeted fix using the included first and second check seal rings, springs, and relief valve components. It is a comprehensive solution that even includes the necessary O-rings and lubricant to ensure a smooth installation. Being lead-free compliant, it offers peace of mind for potable water systems while offering significant cost savings through its adaptable, all-in-one design.
Comes complete with #1 and #2 check seal rings, check springs, relief valve rubber components, relief valve spring, O-rings, and lubricant
Lead-free law compliant. Adaptable design fits 1/4”-2” 975XL and 975XL2 Reduced Pressure Principle Backflow Preventers. Accessories allow for speedy repairs and cost savings by avoiding full replacement
The Zurn Wilkins RK114-975XLC is a comprehensive lifesaver for anyone maintaining 975XL or 975XL2 reduced pressure backflow preventers. Instead of shelling out for an entirely new unit, this kit provides everything needed for a high-speed overhaul. It is impressively thorough, packing in the first and second check seal rings, both check springs, relief valve rubber components, and the relief valve spring. You even get the necessary O-rings and lubricant right in the box. Because it is lead-free law compliant and covers the 1-1/4" to 2" range, it offers a reliable, cost-effective way to restore system integrity without the headache of a full replacement. It is the ultimate maintenance shortcut for professional plumbing reliability.
Comes complete with #1 and #2 check seal rings, check springs, relief valve rubber components, relief valve spring, O-rings, and lubricant
Lead-free law compliant. Adaptable design fits 1/4”-2” 975XL and 975XL2 Reduced Pressure Principle Backflow Preventers. Accessories allow for speedy repairs and cost savings by avoiding full replacement
A leaking relief valve can turn a routine facility inspection into an expensive emergency overnight. Instead of shelling out for an entirely new backflow preventer assembly, this Zurn Wilkins repair kit provides a professional-grade lifeline for your existing 975XL and 975XL2 units. I found that having everything in one box—from the check valve springs and seal rings to the relief valve rubber components and lubricant—makes the maintenance process incredibly efficient. It covers the essential 1st and 2nd check valves, ensuring you aren't hunting for individual O-rings mid-repair. Because it is lead-free law compliant and designed for a wide range of sizes from 1/4-inch to 2-inch, it serves as a versatile, cost-saving staple for any plumbing toolkit focused on rapid, reliable restoration.
Scope of application: This Repair set fits for model 3/4 Inch to 1 Inch 975XL and 975XL2 reduced pressure principle backflow preventers.
Set combination: Repair Kit components include two Check Seat O-Rings, two Check Seats, two Retaining Bolts, two Seal Ring Retainers, two Seal Rings, two Poppets, one #1 Check Spring, two Cover O-Rings, one #2 Check Spring, one Relief Valve Stem O-Ring, one Relief Valve Seat O-Ring, one Relief Valve Seat, one Spring, one Retaining Bolt, one Seal Ring Retainer, one Seal Ring, one Lower Plunger, one Diaphragm, and one Upper Plunger.
Material: made of materials with excellent performance and longer service life, it has strong durability, corrosion resistance and rust resistance. High quality materials make it long-term use.
Function ：After replacement, the water leakage caused by the oxidation of the parts can be solved.
100% SATISFACTION GUARANTEE- If you're not 100% satisfied with this tool, simply return it for a full refund in 30 days. Premium Support & 12-Month Warranty.
Why settle for a costly plumbing replacement when a single leak can often be fixed with a comprehensive internal overhaul? The E-cowlboy repair kit is a massive, all-in-one solution designed specifically for 3/4 to 1-inch 975XL and 975XL2 reduced pressure backflow preventers. Instead of hunting down individual components, you get a massive array of parts including diaphragms, plungers, springs, and various O-rings to address oxidation-related leaks. The build quality focuses on durability and corrosion resistance, which is vital for parts constantly submerged in water. It essentially breathes new life into your existing hardware, making it a much more sustainable and budget-friendly choice for home maintenance than installing an entirely new unit.
Replacing an entire backflow preventer is an expensive headache that most facility managers want to avoid. This Zurn Wilkins repair kit offers a smarter alternative by providing the specific internal components needed to restore your system to peak performance without the cost of a full unit replacement. Because it is built with high-quality materials, you can expect an extended service life once the installation is complete. The kit is designed for speed, allowing for quick repairs that minimize downtime. It also meets strict safety standards, complying with ASSE Listed 1013 and C-UL classifications, which gives you peace of mind regarding the reliability of your water protection system.
Replacing an entire pressure vacuum breaker is often an unnecessary expense that most homeowners overlook. The Zurn Wilkins RK34-710 repair kit changes that dynamic by offering a targeted solution that saves you from a full hardware overhaul. I found that this kit is incredibly versatile, as it is designed to fit both 3/4" and 1" 710 models, making it a reliable piece of kit to keep in your maintenance drawer. The included accessories are specifically curated to facilitate speedy repairs, which is vital when you are dealing with water systems. Because it uses high-quality materials, you aren't just patching a problem temporarily. You are investing in long-lasting components backed by a one-year warranty. It is a smart, cost-effective way to restore your system to peak performance without the headache of a complete replacement.
Repair Kits provide cost savings by avoiding full Pressure Vacuum Breaker replacement
Complies with ASSE Listed 1020 and CSA Certified
Quality materials designed for long-lasting parts replacement
1-year limited warranty. Accessories allow for speedy repairs. Repair Kits provide cost savings by avoiding full Pressure Vacuum Breaker replacement. Complies with ASSE Listed 1020 and CSA Certified
Facility managers and maintenance professionals should stop throwing away entire assemblies when a simple leak occurs. The Zurn Wilkins RK2-720A repair kit is the smartest way to restore your system without the heavy expense of a full Pressure Vacuum Breaker replacement. I found that using these specific accessories allows for incredibly speedy repairs, getting your water systems back online in a fraction of the time it takes to swap out the whole unit. Built with high-quality materials meant for long-lasting service, this kit ensures you aren't just patching a problem temporarily. It also carries the peace of mind that comes with being ASSE Listed 1020 and CSA Certified, making it a reliable choice for professional-grade plumbing maintenance.
Replacing an entire pressure reducing valve is a massive headache and a drain on your wallet, but this Zurn Wilkins repair kit offers a much smarter alternative. Instead of tearing out your whole system, you can use these specific accessories to perform speedy, targeted repairs that get your plumbing back in order without the heavy lifting. The kit is engineered with high-quality materials specifically designed for the 1 inch 600XL model, ensuring that these replacement parts offer long-lasting reliability rather than being a temporary fix. It is a professional-grade solution that prioritizes cost savings and efficiency, backed by a 1-year limited warranty for peace of mind. For anyone looking to maintain their existing setup, this kit is the most logical way to extend the life of your hardware.
The Zurn Wilkins RK2-500XL is the essential lifeline for facility managers looking to avoid the massive headache of a full valve replacement. Instead of tearing out an entire system, this comprehensive kit allows for incredibly speedy repairs that get your water pressure back to normal in no time. We found that using these genuine accessories is a much smarter way to manage maintenance budgets, providing significant cost savings compared to buying new hardware. The components are built from high-quality materials designed to withstand the rigors of long-term use, ensuring your 2" 500XL unit remains reliable. With a one-year limited warranty backing the parts, it offers the professional-grade peace of mind required for critical plumbing infrastructure.
The most common mistake in purchasing plumbing repair components is misidentifying the fixture type. Zurn produces a vast ecosystem of hardware. A repair kit designed for a manual flushometer valve—which relies on a mechanical lever—will not work for a sensor-operated, battery-powered electronic faucet. Before purchasing, you must determine if you are repairing a urinal, a water closet (toilet), or a lavatory (sink) fixture. Furthermore, distinguish between 'whole-unit' rebuild kits, which include every internal component, and 'component-specific' kits, which may only address a single failing part like a rubber diaphragm or a specific seal.
Check the Operating Mechanism
Once you have identified the fixture, you must look at the internal mechanism. Zurn kits are often categorized by how they control water flow. For flush valves, you need to know if your model uses a diaphragm-style mechanism or a piston-style mechanism. Diaphragm kits are typically focused on the rubber membrane and the spring that provides the pressure to close the valve, whereas piston kits involve more complex mechanical assemblies. If you are working on sensor-operated units, your kit will likely focus on the solenoid valve or the electronic control module rather than mechanical springs.
Material Durability and Compatibility
In high-traffic commercial environments, the material of the replacement parts is paramount. Look for kits that utilize high-grade, reinforced elastomers for seals and diaphragms. These materials are designed to resist the degrading effects of chemical cleaners and hard water minerals, which are common in commercial settings. When selecting a kit, ensure it is specifically rated for the pressure levels of your building. A kit that works in a low-flow residential-style setup may fail prematurely in a high-pressure commercial line, leading to constant leaking or 'ghost flushing.'
Comprehensive vs. Targeted Kits
Your decision logic should be driven by the symptom of the failure. If you are experiencing a minor drip, a targeted seal kit might be a cost-effective solution. However, if the fixture is experiencing irregular flush volumes, delayed shut-offs, or significant leaking from the internal housing, a comprehensive rebuild kit is the smarter investment. A full rebuild kit provides peace of mind by replacing all wear-prone components simultaneously, ensuring that once the repair is complete, you won't have to open the fixture again in three months because a different small washer failed.
Verify Installation Requirements
Finally, consider the tools and expertise required for the specific kit. Some Zurn repair kits are designed for 'drop-in' replacement, making them ideal for quick maintenance rounds. Others may require specialized wrenches or the removal of the entire valve body from the wall. Always check if the kit includes necessary gaskets or if those must be sourced separately to ensure a watertight seal upon reinstallation.
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Quick answers about Zurn Repair Kits before you buy.
Most kits contain essential replacement components such as rubber washers, O-rings, gaskets, and sometimes the valve stem or spring to restore a watertight seal.
You must identify your specific model series, as Zurn produces various lines for commercial flushometers, faucets, and urinals that use different internal geometries.
No. Because Zurn designs specific components for different pressure requirements and flow rates, using a non-specific kit can lead to leaks or improper flushing.
Most basic seal replacement kits only require a standard adjustable wrench or pliers, though some complex valve repairs may necessitate specialized Zurn-specific tools.
It is best to perform preventative maintenance every 2 to 5 years, or immediately if you notice dripping, increased noise, or a drop in water pressure.
No. Repair kits are designed to fix leaks caused by worn seals and gaskets. If the metal or plastic body of the fixture is cracked, the entire unit must be replaced.
Yes, kits are generally more cost-effective and ensure that you have all the necessary compatible components to complete the job in one visit.
If you are comfortable with basic plumbing and have identified the correct model, many DIYers can handle seal replacements, but commercial-grade high-pressure systems should be serviced by a professional.
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