Plumbing / Valves & Fittings
Installation and Specification Guide for Sloan Royal 152-1.6-RB-WB-4-3/4-LDIM-L3 Flushometer
Quick guide for the Sloan Royal 152-1.6-RB-WB-4-3/4-LDIM-L3 manual flushometer. Includes technical specifications, operating pressure requirements, and rough-in dimensions.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This document provides the technical specifications and installation dimensions for the Sloan Royal 152-1.6-RB-WB-4-3/4-LDIM-L3 manual flushometer. Ensure your water supply meets the required flowing pressure of 15-80 psi (103-552 kPa) before installation. Note that the required WB-1-A wall box is not included and must be ordered separately.
Product Overview
The Royal 152 is a concealed manual water closet flushometer designed for rear spud fixture connections. It features a 3-inch metal oscillating push button and is constructed with high copper, low zinc brass castings for dezincification resistance. The unit utilizes a PERMEX synthetic rubber diaphragm with a dual filtered fixed bypass for reliable performance.
Technical Specifications
- Flush Volume: 1.6 gpf (6.0 lpf)
- Valve Type: Diaphragm
- Fixture Connection: Rear Spud
- Supply Pipe: 1 inch (25mm)
- Rough-in Dimension: 24 inches (610mm)
- L Dimension: 4.75 inches (121mm)
- Operating Pressure: 15-80 psi (103-552 kPa) flowing pressure
Installation and Compatibility
The flushometer is designed for water closets with a rear spud connection. The installation requires a 1-inch I.P.S supply line. The rough-in dimension from the center of the supply to the center of the waste is 24 inches. The unit is compatible with standard wall boxes (WB-1-A), which must be purchased separately.
Compliance and Standards
This product is BAA compliant, cUPC certified, and IAPMO listed. It is manufactured in the USA and conforms to ASTM Alloy Classification for Semi-Red Brass, as well as ASSE 1037 and ANSI/ASME 112.19.2 standards.
Practical help
Common problems
Insufficient flush performance
Verify that the flowing water pressure is within the required 15-80 psi (103-552 kPa) range.
Missing wall box
The WB-1-A wall box is not included with the flushometer and must be ordered separately.
Before use
- Verify water supply pressure is between 15-80 psi (103-552 kPa)
- Ensure the fixture is a water closet with a rear spud connection
- Confirm availability of the WB-1-A wall box
- Check that the supply pipe is 1 inch (25mm)
Specs in practice
- Flush Volume
- 1.6 gpf (6.0 lpf) per flush cycle
- Rough-in Dimension
- 24 inches (610mm) from the center of the supply line to the center of the waste line
- Operating Pressure
- 15-80 psi (103-552 kPa) flowing pressure required for proper valve operation
Images and diagrams
- The rough-in drawing illustrates the 24-inch dimension required between the supply and waste centerlines.
- The drawing shows the 1-inch I.P.S supply connection point.
Model compatibility
- Requires WB-1-A wall box (sold separately).
- Designed specifically for water closets with rear spud connections.
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.