Posted on October 28 2025

Determining which Sloan parts to keep on hand depends on the types of fixtures installed throughout your facility. To help you stay prepared, we’ve highlighted some of the most popular small—but essential—repair parts often needed for Sloan fixture maintenance.
These items include commonly overlooked components that are useful to have ready during repairs, as well as parts that experience normal wear and tear over time and need regular replacement.
Most of the parts listed below are for Sloan flushometers, though we’ve also included a pair of in-line check valves for faucets, one of our top-selling repair items.
Spud Coupling Gasket Kit

1-1/2"
This Spud Coupling Gasket Kit is 1-1/2-inch. It is designed for closet applications. The kit contains a Friction Ring (Sloan Model Number: F3 | Sloan Code Number: 5306058), and a Slip Joint Washer.
O-Ring for Adjustable Tailpiece

This Adjustable Tailpiece O-Ring is made by Sloan. We recommend you replace the o-ring each time you make a repair that breaks the o-ring's seal. Replacing the o-ring each time ensures that the flushometer always has a proper seal once the repairs are completed.
Vacuum Breaker Repair Kit
High-Performance

This Sloan model V-651-A kit is designed for use in new style Royal flush valves. Replaces V551A old style vacuum breaker repair kit. Includes updated HD Permex Rubber vacuum breaker. Best vacuum breaker repair kit for low-flow toilet and urinal applications.
Vacuum Breaker Repair Kit
Old Style

This Sloan V-551-A Vacuum Breaker Repair Kit For Regal and Old Style Royal. Sloan code number 3323192. Read our Sloan Vacuum Breaker Repair Kit Article to learn the difference between old and new style kits and more.
Brass Spud Assembly
1-1/2-inch

This 1-1/2" Spud Assembly is constructed of brass. It's designed for use on closet applications. Often bought in conjunction with the Spud Coupling Gasket Kit shown above.
Diaphragm Kit for Closet
1.6 GPF

Part #08114
This Sloan model A-41-A kit is designed for closet applications. The diaphragm is for 1.6 GPF closet flushometers. Diaphragm kits are one of the first things that need to be replaced in a flushomerer. Read our Sloan Diaphragm Kit Guide to view FAQs about them, and get links to all of the various kits available and more.
In-Line Check Valves
3/8"F x 3/8"M

This pair of In-Line Check Valves are 3/8"F x 3/8"M. They are compression threads. These In-Line Check Valves with compression threads are used to prevent the crossover of water in thermostatic mixing valves. These often need to be replaced due to scale or build up over time that causes them not to work any longer.
So, there you have it! A few Sloan parts that often need to be replaced, but are sometimes forgotten. We also custom make Master Repair Kits that are model specific, viewable in our Custom Sloan Repair Kits Article.
Or for help finding the reapir part you need and to see a list of resources, check out our How to Find Parts article.