Sloan ROYAL 111-1.28 Closet Flushometer, Manual, Exposed, High Efficiency, 1.28 GPF, 11-1/2 Inch Rough In, 3910168

Sloan

Our Price: $191.75
List Price: $295.00
(You save $103.25)

Average lead time of 1-3 business days

SKU:
3910168
Availability:
In Stock
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Sloan ROYAL 111-1.28 Water Closet Flushometer | 3910168

Average lead time of 1-3 business days

SKU:
3910168
Availability:
In Stock
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Sloan ROYAL 111-1.28 Exposed Water Closet Flushometer (3910168)

Not sure which Royal 111 model you need? Compare all Sloan Royal 111 flushometers by model, flush volume, and configuration.

Sloan Valve Products Made in the USA and Qualify for the Buy American Act

Extremely low, hard to beat Sloan ROYAL 111-1.28 price. ProDryers normally has these in stock. As long as it is in stock, we ship out fast when ordered by 3PM Eastern. Call us at 888-503-7937 with questions or for quotes on bulk pricing. We are an authorized, well-trusted Sloan supplier.

The Royal® Flushometer, which was the very first flush valve to hit the market more than 100 years ago, continues to reliably serve commercial customers today.

These manual, exposed water closet, diaphragm model Flushometers provide water savings while maintaining performance advantages. Features such as an accurate flush delivery system; quiet performance and durable components affirm the Royal as the true leader in Flushometer design.

 

 

Key Features

  • 1.28 GPF Operation: Delivers 4.8 liters per flush for compatible high-efficiency water closets.
  • CID Technology: Controls flush accuracy to support consistent water delivery.
  • Non-Hold-Open Handle: Helps maintain the intended flush volume when the handle is held down.
  • PERMEX Diaphragm: Synthetic rubber diaphragm with a dual-filtered fixed bypass.
  • Vandal-Resistant Stop Cap: Helps protect the control stop from unauthorized adjustment.
  • Durable Brass Construction: High-copper, low-zinc castings provide dezincification resistance.
  • Adjustable Tailpiece: Provides adjustment during installation.
  • ADA Compliance: Meets ADA accessibility requirements when installed according to ADA standards.
  • WaterSense: WaterSense compliant when paired with a 1.28 GPF WaterSense water closet.
  • Standards: Sloan specifies conformance with ASTM semi-red brass alloy requirements and applicable sections of ASSE 1037.

Technical Specifications

  • Full Model: ROYAL 111-1.28-CP
  • Product Code: 3910168
  • Fixture Type: Water closet
  • Operation: Manual, exposed, single flush
  • Flush Volume: 1.28 GPF / 4.8 LPF
  • Valve Type: Diaphragm
  • Valve Body Material: Semi-red brass
  • Fixture Connection: Top spud
  • Rough-In Dimension: 11-1/2 inches
  • Spud Coupling: 1-1/2 inches
  • Supply Pipe: 1 inch
  • Flowing Operating Pressure: 15–80 psi
  • Finish: Polished chrome

Installation and Fixture Compatibility

Pair this flushometer with a water closet specifically designed for 1.28 GPF operation. Confirm the fixture’s flush-volume requirements, top-spud connection, rough-in dimensions, and available water supply before ordering. Some fixtures require a minimum flowing pressure greater than 15 psi; follow the water closet manufacturer’s requirements.

 

Sloan ROYAL 111-1.28 Closet Flushometer Resources

Download the Sloan ROYAL 111-1.28 Closet Flushometer Spec Sheet
Download the Sloan ROYAL Flushometers Install Guide
Download the Sloan ROYAL Flushometers Informational Guide

 
Expert Insight

Why We Recommend the Sloan ROYAL 111-1.28

The Sloan ROYAL 111-1.28 Closet Flushometer (3910168) combines proven manual operation with a high-efficiency 1.28 GPF flush volume. We often recommend this exposed diaphragm model for commercial restrooms that want to conserve water without adding sensors, batteries, or electrical components. CID™ technology controls flush accuracy, while the PERMEX® diaphragm with a dual-filtered fixed bypass supports dependable performance and straightforward servicing.

Best Applications

The ROYAL 111-1.28 is well suited for schools, office buildings, restaurants, healthcare facilities, retail stores, municipal buildings, and other high-use commercial restrooms. Its non-hold-open handle helps maintain the intended flush volume, while the vandal-resistant stop cap and high-copper, low-zinc brass construction support durability in demanding public environments.

Quick Tip

Use a replacement diaphragm or rebuild kit rated specifically for 1.28 GPF operation. Installing an internal kit intended for a different flush volume can change water delivery and reduce fixture performance. Recording the complete model and flush volume near the maintenance area can help prevent incorrect replacement parts from being installed later.

Common Question

Can the Sloan ROYAL 111-1.28 replace a 1.6 GPF closet flushometer?
Only when the existing water closet is approved for 1.28 GPF operation. A fixture designed exclusively for a 1.6 GPF flush may not clear or rinse properly with less water. Confirm the bowl's rated flush volume, top-spud connection, 11-1/2-inch rough-in, supply requirements, and minimum flowing pressure before making the change.

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