Posted on February 03 2025
There are many possible causes of a leaking flushometer. These include worn out parts, improper installation, incorrect part replacement, bad water quality, high traffic, and others. In this article, we identify the most common causes of leaks for Sloan manual flushometers, listed by leak location. We also share other resources to help you get the parts you need to quickly get your valve back in proper working order.
For leaks on Sloan sensor flushometers, utilize one of the resources listed below:
- Sensor Flushometer Troubleshooting Article
- G2 Flushometer Troubleshooting Article
- ESS Exposed Sensor Flushometer Troubleshooting Article
-
Side Mount Sensor Flushometer Troubleshooting Article
Sloan Flushometer Leaking from Top of Unit
Leaks occurring beneath the manual flushometer cover can signify that either the cover is not screwed on tightly enough, or the inside cover is cracked. If the cover isn't tight enough, simply use a fixed smooth jaw wrench to tighten it. (See our Flushometer Tool Guide Article to find the tools you need.) If the inside cover is cracked, you will need to replace it with the A-71 Inside Cover - Part #08050.
Sloan Flushometer Leaking from Bottom of Unit
Leaks occurring at the bottom of the unit where the flushometer connects to the fixture can be an indication that the spud coupling assembly needs to be tightened or replaced. Click the part number below for the repair assembly that you need:
Royal Closet
#08017 (Sloan F-5-A-T)
1-1/2”
Royal Urinal
#08018 (Sloan F-5-A-U)
1-1/4”
#08019 (Sloan F-5-A-W)
3/4”
Regal Closet
#08142 (Sloan F-56-A)
1-1/2”
Regal Urinal
#08143 (Sloan F-55-A)
1-1/4”
#08144 (Sloan F-54-A)
3/4”
Sloan Flushometer Leaking from Vacuum Breaker
If you notice leaking under the vacuum breaker nut when your unit is flushed, then the internal vacuum breaker parts may need to be replaced. Learn more about the vacuum breaker and make sure you buy the right kit for your unit in our Vacuum Breaker Repair Kit article.
If the leak is coming from above the vacuum breaker coupling, whether it’s during or after flushing the unit, then the rubber sleeve inside the vacuum breaker could be damaged from the vacuum breaker coupling being overtightened. Dripping from below the vacuum breaking coupling during or after flushing can be caused by the rubber sleeve just being worn out. The solution for this is to replace the internal parts with a vacuum breaker repair kit.
To replace the entire vacuum breaker, review our Vacuum Breaker Replacement Guide.
Sloan Flushometer Leaking from the Handle
Leaks from the handle can indicate that the internal handle parts needs to be replaced with a handle repair kit. Before replacing, first check if the handle coupling is loose, and tighten it with the following tools: the Non-Marking Offset Adjustable Valve Wrench (Part #08070) or the Sloan A-50 Super Wrench (Part #08047).
The water can be dripping from the handle socket or the handle coupling. Generally, handle repair kits have a life expectancy of 4-6+ years. To replace the full handle assembly, see Sloan B-73-A Handle Assembly - Part #08069. For just the Handle Repair Kit, there are two options:
Part #08439 (Sloan B-51-A)
High performance kit for new style and old style Royal units, as well as Regal units.
Part #08007 (Sloan B-50-A)
For Regal and old style Royal units
For a full list of handle repair kits, and more handle repair tips, review our Sloan Handle Assembly and Repair Kit Guide
Sloan Flushometer Leaking from the Tailpiece
A leak at the threads where the tailpiece connects to the valve body is a sign that the tailpiece needs to be replaced. Find all of the Sloan flush valve tailpiece units, related parts, and the tailpiece removal tool on our Sloan Tailpiece page.
For more information about tailpiece removal and replacement, read our Sloan Flushometer Tailpiece Removal and Replacement article.
Sloan Flushometer Leaking from the Control Stop
Leaks at the control stop are a sign that the inside parts of the control stop need to be replaced.
Control Stop Assemblies
For 1" or 3/4"
Part #08032 (Sloan H-541-ASD)
For older urinals made earlier than 2013 that use the 3/4" stop assembly:
Part #08033 (Sloan H-543-ASD)
Sloan Flushometer Keeps Running
There are many reasons that a unit can continuously run with no shut-off. The solenoid could be stuck open, debris could be blocking the diaphragm bypass or be stuck under the diaphragm, or there could be a drop in water pressure. See #4 in our 9 Flush Valve Troubleshooting Tips article for more information on how to solve these issues. You will also find answers to flush length too short or too long, and flush valve not flushing issues as well.
Continuous running can be an indicator that a variety of parts need to be replaced.
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The Diaphragm kit needs to be replaced (link to article for Diaphragm guide) Diaphragm kits generally have a life expectancy of 2-4+ years for Regal and old Style Royal units, and 5-6+ for New Style Royal units made after 1998.
For piston type flushometers, the relief valve seat may be degraded and need to be replaced. See piston assembly options. - The Inside Cover (Part #08050) needs to be replaced. The inside cover has a life expectancy of 5-7+ years.
- The Control Stop needs to be replaced. This part has a life expectancy of 6-10+ years. Learn everything you need to know about control stops in our Sloan Control Stop Guide.
Sloan Manual Flushometer Parts Breakdowns
Click any of the links below to view our photographic parts breakdowns. Our breakdowns feature photos of each part, and troubleshooting guides for Sloan Manual Flushometers. They are listed in alphabetical order by model.
• Sloan Bedpan Washer Parts Breakdown and Troubleshooting Guide (For units made before 1998)
• Sloan Crown and Crown 2 Parts Breakdown and Troubleshooting Guide
• Sloan GEM 2 Parts Breakdown and Troubleshooting Guide
• Sloan Hydraulic Series 900 Parts Breakdown and Troubleshooting Guide
• Sloan Optima Parts Breakdown (For units made before 2010)
• Sloan Regal XL Flushometer Parts Breakdown and Troubleshooting Guide
• Sloan Royal Flushometer Parts Breakdown and Troubleshooting Guide (For units made before 1998)
• Sloan Royal Flushometer Parts Breakdown and Troubleshooting Guide (For units made after 1998)