Sloan A-1101-A Royal Water Closet Diaphragm Rebuild Performance Kit

In this review of the Sloan A-1101-A Royal water closet diaphragm rebuild performance kit, the bottom line is simple: it is a practical choice for facility managers and plumbers who need a quick, reliable rebuild for Royal manual flushometers. The kit is aimed at those replacing worn internal parts on 1.6 GPF Royal flushometers and the single biggest reason to buy is that it contains the OEM diaphragm and components designed to restore proper flush performance without guesswork.

Key Features

• Complete rebuild kit: Includes all the components needed to perform a diaphragm rebuild so a technician can complete the repair in one visit.
• PERMEX rubber diaphragm: The synthetic rubber diaphragm with a dual filtered bypass is resistant to chloramine, reducing premature failure in treated water systems.
• Designed for 1.6 GPF Royal flushometers: Specifically matched to the Royal line so compatibility is straightforward when the correct model is identified.
• Genuine Sloan parts: Using OEM components helps maintain flushometer longevity and reduces the chance of repeat repairs.
• Improves functionality: Restores flush performance and fit, which customers report brings fixtures back to near-new operation.

Who It's For

The kit is best for maintenance staff, commercial plumbers, and building owners responsible for high-traffic restrooms that use Sloan Royal manual flushometers at 1.6 GPF. It is especially useful when a leaking or weak flush points to diaphragm wear and when a one-trip repair solution is preferred.

This is less suitable for someone with a non-Royal flushometer or a fixture that uses a different flush volume; check part compatibility before purchasing. Homeowners with uncommon residential valves should verify that their model matches the Royal line rather than assuming universal fit.

Pros & Cons

Pros

• OEM diaphragm and parts provide reliable fit and restore proper flush action.
• PERMEX synthetic rubber resists chloramine, extending service life in treated water.
• Customers report easy installation and that the kit includes everything needed for a repair.
• Good value for commercial maintenance budgets given longevity and compatibility.

Cons

• Only intended for 1.6 GPF Royal flushometers, so incorrect model selection will require returning the part.
• Not a universal kit; technicians must confirm compatibility before ordering.

Specifications

Product type	Diaphragm rebuild performance kit
Intended flush volume	1.6 GPF
Compatible line	Royal manual flushometers
Diaphragm material	PERMEX synthetic rubber
Includes	All components required for diaphragm rebuild
Part family	Sloan genuine parts

Our Verdict

The Sloan A-1101-A rebuild performance kit is a solid, cost-effective option for keeping Royal 1.6 GPF flushometers operating reliably. For facilities that prioritize uptime and prefer OEM replacements, this kit restores function, resists chloramine-related wear, and usually lets a technician finish the job in one visit, making it a practical value for commercial maintenance.

Frequently Asked Questions

Is this kit compatible with all Sloan flushometers?
It is specifically designed for Sloan Royal manual flushometers at 1.6 GPF; confirm the flushometer model before purchasing.

Does the kit include the diaphragm material?
Yes, the kit includes a PERMEX synthetic rubber diaphragm and the components needed for a rebuild.

Will this prevent future chloramine damage?
The PERMEX diaphragm is resistant to chloramine and helps reduce premature failure, but water chemistry monitoring is still recommended for long-term protection.