Plumbing / Toilet Flushers
Sloan Royal 152-1.28-RB-4-3/4-LDIM-L3 Concealed Manual Flushometer
Quick guide for the Sloan Royal 152-1.28-RB-4-3/4-LDIM-L3 concealed manual flushometer. Includes technical specifications, installation dimensions, and operating pressure requirements.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This document provides technical specifications and rough-in dimensions for the Sloan Royal 152-1.28-RB-4-3/4-LDIM-L3 concealed manual flushometer. It is intended for planning installation and verifying compatibility with your water closet fixture.
Product Overview
The Royal 152 is a concealed manual water closet flushometer designed for efficiency and durability. Key features include:
- Flush Volume: 1.28 gpf (4.8 lpf)
- Push Button: 3-inch metal oscillating button (L3)
- Diaphragm: PERMEX synthetic rubber with dual filtered fixed bypass
- Construction: High copper, low zinc brass castings for dezincification resistance
- Vandal Resistance: Includes a vandal-resistant stop cap
Technical Specifications
Ensure your plumbing system meets the following requirements:
- Valve Body Material: Semi-red Brass
- Fixture Connection: Rear Spud
- Spud Coupling: 1.5 inches (38mm)
- Supply Pipe: 1 inch (25mm)
- L Dimension: 4.75 inches (121mm)
- Rough-in Dimension: 24 inches (610mm)
Operating Requirements
The valve requires a specific flowing pressure to operate correctly:
- Flowing Pressure: 15-80 psi (103 - 552 kPa)
- Note: Specific fixtures may require a greater minimum flowing pressure; always consult the fixture manufacturer requirements.
Installation Dimensions
The rough-in and line drawing provided in the manual indicates the necessary clearances for installation. The center of the waste is 24 inches (610mm) from the center of the supply pipe. Ensure the wall opening is prepared according to these dimensions before installation.
Practical help
Common problems
Valve not flushing correctly
Verify that the flowing water pressure is within the required 15-80 psi range.
Incompatible fixture
Ensure the water closet is a 1.28 gpf (4.8 lpf) WaterSense compliant fixture.
Before use
- Verify the fixture is a WaterSense compliant water closet.
- Ensure the supply line is 1 inch (25mm).
- Confirm the rough-in dimension is 24 inches (610mm).
- Check that the flowing water pressure is within the 15-80 psi range.
Images and diagrams
- The rough-in diagram shows the required 24-inch distance from the center of the waste to the center of the supply pipe.
- The diagram illustrates the 1-inch supply pipe connection and the 4.75-inch L dimension.
Model compatibility
- Compatible with 1.28 gpf (4.8 lpf) WaterSense fixtures.
- Requires a 1-inch supply pipe.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.