SCHELL K12900 Urinal Flush Valve OMAT Basic DN 15 1/2 User Manual

1. Introduction

This manual provides comprehensive instructions for the installation, operation, and maintenance of the SCHELL K12900 OMAT Basic DN 15 1/2 Urinal Flush Valve. Please read this manual thoroughly before installation and use to ensure proper function and safety.

2. Safety Information

Ensure water supply is turned off before beginning any installation or maintenance work.
Installation should be performed by qualified personnel in accordance with local plumbing codes and regulations.
Wear appropriate personal protective equipment (PPE) during installation.
Do not use abrasive cleaners or tools that could damage the chrome finish.
Verify all connections are secure and leak-free before restoring water supply.

3. Package Contents

The package for the SCHELL K12900 Urinal Flush Valve OMAT Basic DN 15 1/2 typically includes:

1 x Urinal Flush Valve 1/2" OMAT Basic DN 15 1/2
Chrome connection nut
Rosette
Interior connector

4. Specifications

Feature	Detail
Model	K12900 (SCH024760699)
Material	Brass (full-metal flusher, brass push-button)
Finish	Chrome
Inlet Connection Type	Threaded, 1/2" DN 15
Outlet Connection Size	0.5 Inches
Flow Pressure	0.8 - 5.0 bar (Maximum Operating Pressure: 5 Bars)
Flush Flow	0.3 l/s
Flow-Rate Adjustable	1 - 6 liters
Noise Class	II
Dimensions (L x W x H)	7.8 x 4.09 x 1.65 inches
Item Weight	1.51 pounds
Compliance	DIN DVGW BP0378

Figure 1: SCHELL K12900 Urinal Flush Valve. This image shows the complete chrome-finished urinal flush valve assembly.

SCHELL K12900 Urinal Flush Valve Dimensional Drawing

Figure 2: Dimensional drawing of the SCHELL K12900 Urinal Flush Valve. This diagram illustrates key measurements in millimeters, including the G 1/2 connection, overall height of 230mm, and various diameters.

5. Installation

5.1 Pre-Installation Checks

Verify that the water supply pressure is within the specified range of 0.8 to 5.0 bar.
Ensure all necessary tools and components are available.
Turn off the main water supply to the urinal.

5.2 Installation Steps

Prepare Connection: Ensure the existing water inlet pipe is clean and ready for connection. The valve requires a 1/2" threaded inlet.
Attach Interior Connector: Securely attach the interior connector to the water inlet pipe.
Mount Rosette: Place the chrome rosette against the wall, covering the connection point.
Connect Flush Valve: Thread the urinal flush valve onto the interior connector. Use the chrome connection nut to tighten securely. Ensure the valve is oriented correctly for operation.
Adjust Flow Rate: The flush volume is adjustable from 1 to 6 liters. Locate the adjustment mechanism (refer to specific product diagrams if available) and set the desired flush volume. This typically involves a screw or dial.
Check for Leaks: Slowly turn on the main water supply. Inspect all connections for any signs of leakage. Tighten connections as necessary.
Test Operation: Press the flush button to ensure the valve operates correctly and the desired flush volume is dispensed.

6. Operation

The SCHELL K12900 Urinal Flush Valve is designed for simple and reliable operation.

To activate the flush, firmly press the brass push-button located on the front of the valve.
The valve will dispense the pre-set volume of water (adjustable from 1 to 6 liters) and then automatically close.
Release the push-button after activation.

7. Maintenance

7.1 Cleaning

Clean the exterior chrome finish regularly with a soft cloth and mild, non-abrasive cleaning solution.
Avoid using harsh chemicals, abrasive pads, or acidic cleaners, as these can damage the chrome plating.
Rinse thoroughly with clean water after cleaning and dry with a soft cloth.

7.2 Internal Component Inspection (Professional Recommended)

For optimal performance and longevity, periodic inspection of internal components (e.g., seals, diaphragms) by a qualified plumber is recommended.
If the flush valve exhibits reduced flow, continuous dripping, or difficulty in operation, internal components may require cleaning or replacement.
Always turn off the water supply before attempting any internal maintenance.

8. Troubleshooting

Problem	Possible Cause	Solution
No flush or weak flush	Water supply turned off or restricted. Low water pressure. Clogged inlet filter or internal components. Incorrectly adjusted flow rate.	Check water supply valve. Verify system water pressure is within 0.8-5.0 bar. Clean or replace internal components (professional assistance recommended). Adjust flow rate setting.
Continuous dripping or running water	Worn or damaged internal seals/diaphragm. Debris lodged in the valve mechanism.	Turn off water supply and inspect/replace seals or diaphragm (professional assistance recommended). Clean the valve mechanism.
Leaking at connections	Loose connections. Damaged threads or seals.	Turn off water supply and tighten connections. Inspect and replace damaged seals or use plumber's tape/sealant.

9. Warranty and Support

For specific warranty information regarding your SCHELL K12900 Urinal Flush Valve, please refer to the documentation provided at the time of purchase or contact your retailer. Warranty terms and conditions may vary by region and seller.

For technical support or inquiries, please contact the manufacturer, Schell, or your authorized distributor. Contact details can typically be found on the manufacturer's official website or product packaging.

Schell K12900