Orbit Jar-Top Diaphragm Replacement Kit (2-Pack)

Introduction

This manual provides instructions for the installation, maintenance, and troubleshooting of the Orbit Jar-Top Diaphragm Replacement Kit, Model 57473. This kit is designed to replace worn or damaged diaphragms in compatible Orbit automatic sprinkler valves, restoring their proper function and preventing leaks. The diaphragms are constructed from durable Santaprene material for reliable, long-lasting performance.

Product Features

• Direct Replacement: Specifically designed for Orbit automatic jar-top valves.
• Durable Construction: Made from Santaprene for enhanced durability and resistance to wear.
• Easy Installation: Facilitates simple and quick diaphragm replacement.
• Leak Prevention: Restores proper sealing and operation of the valve.

Package Contents

The Orbit Jar-Top Diaphragm Replacement Kit (Model 57473) includes:

• 2 x Orbit Jar-Top Diaphragm Replacements

Image: The Orbit Jar-Top Diaphragm Replacement Kit showing the diaphragm and sealing ring.

Installation Instructions

Follow these steps to replace the diaphragm in your Orbit automatic jar-top valve:

1. Turn Off Water Supply: Locate the main water shut-off valve for your irrigation system and turn it off to prevent water flow during the replacement process.
2. Locate the Valve: Identify the specific Orbit jar-top valve requiring diaphragm replacement.
3. Remove Valve Top: Unscrew the jar-top lid of the valve by turning it counter-clockwise. Carefully lift the lid off.
4. Remove Old Diaphragm: Gently remove the old, worn, or damaged diaphragm from the valve body. Note its orientation for correct installation of the new diaphragm.
5. Clean Valve Interior: Inspect the valve interior for any debris, dirt, or mineral deposits. Clean the valve body thoroughly to ensure a proper seal with the new diaphragm.
6. Install New Diaphragm: Place the new Orbit Jar-Top Diaphragm into the valve body, ensuring it is seated correctly and oriented in the same manner as the original. The diaphragm should sit flat within the valve.

Image: Top view of the Orbit Jar-Top Diaphragm, showing its design for proper seating.

7. Reattach Valve Top: Carefully place the jar-top lid back onto the valve body. Screw it on clockwise until it is hand-tight. Avoid over-tightening, which can damage the valve or diaphragm.
8. Restore Water Supply: Slowly turn the main water supply back on.
9. Test Valve: Activate the sprinkler zone associated with the repaired valve to ensure it opens and closes correctly and that there are no leaks.

Image: Side view of the Orbit Jar-Top Diaphragm, highlighting its structural details.

Operating Principles

The diaphragm is a critical internal component of an automatic sprinkler valve. It acts as a flexible barrier that, in conjunction with water pressure and the valve's solenoid, controls the opening and closing of the valve. When the solenoid is activated, it releases pressure from above the diaphragm, allowing the main water pressure to lift the diaphragm and open the valve. When deactivated, pressure equalizes, forcing the diaphragm down to seal the valve and stop water flow. A properly functioning diaphragm ensures precise water control and prevents continuous water leakage.

Maintenance

To ensure the longevity and optimal performance of your Orbit automatic sprinkler valves and their diaphragms:

• Regular Inspection: Periodically inspect your sprinkler valves for signs of leaks or improper operation.
• Cleanliness: During any valve maintenance, ensure the valve body and diaphragm seating area are free from dirt, sand, or other debris that could compromise the seal.
• Proper Storage: If removing valves for winterization, store them in a clean, dry place.
• Use Genuine Parts: Always use genuine Orbit replacement parts to ensure compatibility and performance.

Troubleshooting

If your Orbit automatic sprinkler valve is not functioning correctly after diaphragm replacement, consider the following:

Valve Leaks Continuously

• Diaphragm Not Seated Correctly: Turn off the water, reopen the valve, and ensure the diaphragm is perfectly flat and centered within the valve body.
• Debris in Valve: Inspect the valve interior and diaphragm for any small particles that might be preventing a complete seal. Clean thoroughly.
• Damaged Diaphragm: Although new, inspect the diaphragm for any manufacturing defects or tears. Replace if damaged.
• Over-tightened Lid: An over-tightened lid can distort the diaphragm. Loosen slightly and re-test.

Valve Does Not Open or Close

• Water Pressure Issues: Ensure adequate water pressure is supplied to the valve.
• Solenoid Malfunction: The diaphragm relies on the solenoid for operation. If the solenoid is faulty, the diaphragm will not function. Test the solenoid.
• Diaphragm Obstruction: Check for any foreign objects preventing the diaphragm from moving freely.

Specifications

Warranty Information

Specific warranty details for the Orbit Jar-Top Diaphragm Replacement Kit (Model 57473) are not provided in this document. For comprehensive warranty information, please refer to the official Orbit website or contact Orbit customer service directly.

Customer Support

For further assistance, technical support, or inquiries regarding the Orbit Jar-Top Diaphragm Replacement Kit, please visit the official Orbit website or consult your product retailer. Contact information for customer service is typically available on the manufacturer's official channels.