The Orbit Anti-Siphon Valve is a reliable solution for preventing backflow in irrigation systems. Designed with an inline forward flow valve and atmospheric vacuum break, it ensures water safety and system integrity. This valve is ideal for residential and commercial use, offering easy installation and maintenance. Refer to the manual for proper setup and troubleshooting guidance to maximize its performance and longevity.
1.1 Overview of the Orbit 57065 Valve
The Orbit 57065 is a 3/4-inch brass anti-siphon valve designed for sprinkler systems. It prevents backflow, ensuring water safety and system protection. Featuring an inline forward flow valve and atmospheric vacuum break, it stops water from flowing into the culinary system. Easy to install and maintain, this valve is compatible with both inline and anti-siphon irrigation setups. It also allows conversion into a low-pressure drip valve, enhancing versatility. The Orbit 57065 is a reliable choice for residential and commercial irrigation needs, offering durability and efficient performance.
1.2 Importance of Anti-Siphon Technology
Anti-siphon technology is crucial for preventing backflow in irrigation systems, ensuring water safety and protecting against contamination. It prevents water from flowing back into the culinary supply, maintaining system integrity. This technology is essential for compliance with local regulations and safeguarding public health. By installing an anti-siphon valve like the Orbit 57065, users can avoid potential hazards and ensure reliable operation. Regular maintenance and proper installation are key to maximizing its effectiveness and prolonging system lifespan. This technology is a vital component in modern irrigation systems, offering peace of mind and operational efficiency.

Installation Instructions
Install the Orbit Anti-Siphon Valve by first flushing lines to ensure cleanliness. Use thread seal tape for secure connections, avoiding over-tightening. Converts easily to a drip valve.
2.1 Pre-Installation Steps
Before installing the Orbit Anti-Siphon Valve, ensure the system is depressurized and flush all lines to remove debris. Inspect the valve for any damage or defects. Rotate the flow control stem to the fully open position (counter-clockwise) to prepare for installation. Verify compatibility with your irrigation system and ensure all necessary adapters or nipples are available. Use thread seal tape for connections, avoiding pipe joint compound. If converting to a drip valve, follow the manual’s specific instructions. Proper preparation ensures a smooth and leak-free installation process.
2.2 Connecting the Valve to the Manifold
To connect the Orbit Anti-Siphon Valve to the manifold, begin by ensuring the system is depressurized. Attach the valve using an adapter or nipple, aligning the threads carefully to avoid cross-threading. Do not over-tighten, as this may damage the valve or manifold. Apply thread seal tape to the male threads for a secure, leak-free connection. Rotate the flow control stem to the fully open position (counter-clockwise) before securing the valve. Ensure the valve is properly seated and aligned with the manifold ports. Double-check all connections for tightness without over-tightening to prevent damage.
2.3 Using Thread Seal Tape
Thread seal tape is essential for creating a leak-free connection when installing the Orbit Anti-Siphon Valve. Apply the tape to the male threads of the valve or connecting fittings. Wrap the tape clockwise around the threads, ensuring 2-3 complete wraps for an effective seal. Avoid over-wrapping, as this may lead to blockages. Do not use pipe joint compound, as it can damage the valve or create future maintenance issues. After applying the tape, carefully connect the valve to the manifold or other components, ensuring alignment and avoiding cross-threading. Proper use of thread seal tape ensures a secure and leak-resistant connection.

Features and Benefits
The Orbit Anti-Siphon Valve features an inline forward flow design and atmospheric vacuum break, preventing backflow and ensuring water safety. Its adjustable stem packing chamber allows for easy maintenance and leak prevention, while the durable brass construction ensures long-lasting performance. These features make it an ideal choice for residential and commercial irrigation systems, providing reliable operation and peace of mind.
3.1 Inline Forward Flow Valve
The Orbit Anti-Siphon Valve features an inline forward flow design, allowing water to flow in one direction while preventing backflow. This design ensures water safety and system integrity by maintaining a clear path for irrigation water. The inline configuration makes it easy to install and integrate into existing systems. Its forward flow capability enhances efficiency, reducing pressure losses and ensuring consistent water distribution. This feature is essential for maintaining proper irrigation system performance and preventing contamination. The valve’s design aligns with manual guidelines, ensuring optimal function and reliability in various applications.
3.2 Atmospheric Vacuum Break
The Orbit Anti-Siphon Valve incorporates an atmospheric vacuum break, a critical feature that prevents backflow by allowing air to enter the system. This mechanism ensures water flows only in the intended direction, safeguarding against contamination. The vacuum break activates when water pressure drops, creating a barrier that stops reverse flow. This feature is essential for maintaining water safety and system integrity, especially in irrigation setups. By preventing backflow, it protects drinking water supplies from potential pollutants. The atmospheric vacuum break is a key component of the valve’s anti-siphon technology, ensuring reliable performance and compliance with safety standards.
3.4 Adjustable Stem Packing Chamber
The Orbit Anti-Siphon Valve features an adjustable stem packing chamber, designed to maintain a watertight seal around the stem. This chamber allows for precise adjustments to prevent stem leaks, ensuring optimal performance. By tightening or loosening the packing nut, users can customize the seal according to their system’s needs. This feature enhances durability and reduces maintenance frequency. The adjustable design accommodates wear over time, providing a long-lasting solution. Proper adjustment of the stem packing chamber is crucial for the valve’s efficiency and reliability in preventing backflow and ensuring consistent water flow in irrigation systems.
Maintenance and Care
Regular maintenance ensures the Orbit Anti-Siphon Valve operates efficiently. Flush lines before installation and inspect for debris. Clean the valve periodically to prevent clogs and ensure proper function.
4.1 Cleaning the Valve
Regular cleaning is essential for maintaining the Orbit Anti-Siphon Valve’s performance. Start by flushing the irrigation system to remove dirt and debris. Disconnect the valve from the manifold and rinse it with clean water. Use a soft brush to gently scrub away any stubborn particles or mineral buildup. Avoid using harsh chemicals or abrasive materials that could damage the valve’s components. Once clean, allow the valve to air dry before reassembling and reconnecting it to the system. Proper cleaning ensures optimal flow and prevents clogs, guaranteeing reliable operation and longevity of the valve.

4.2 Inspecting for Leaks
Inspecting the Orbit Anti-Siphon Valve for leaks is crucial for maintaining system efficiency. Begin by turning off the water supply and draining the system. Visually examine the valve’s connections, stem, and packing chamber for signs of moisture or wear. Gently tighten any loose connections, but avoid over-tightening. If a leak is detected around the stem, adjust the stem packing chamber by turning the adjustment nut clockwise until the leak stops. Test the valve under pressure to ensure the leak has been resolved. Regular inspections help prevent water waste and ensure the valve operates effectively, protecting your irrigation system from backflow issues.
4.3 Replacing Worn Parts
To replace worn parts on the Orbit Anti-Siphon Valve, start by turning off the water supply and draining the system. Disassemble the valve to access the worn components, such as the stem packing chamber or seals. Remove the old parts and install genuine Orbit replacement parts, ensuring proper alignment and fit. Reassemble the valve carefully, avoiding over-tightening, which could damage the threads or gaskets. After replacing the parts, test the valve under pressure to confirm proper function and eliminate leaks. Regular replacement of worn parts ensures long-term reliability and prevents backflow issues in your irrigation system.

Troubleshooting Common Issues
Identify leaks, adjust flow control, or address backflow concerns. Consult the manual for detailed solutions to ensure proper valve function and system performance.
5.1 Identifying Stem Leaks
Stem leaks in the Orbit Anti-Siphon Valve can occur due to worn or damaged packing. Inspect the stem area for visible water droplets or moisture. If a leak is detected, refer to the manual for adjusting the stem packing chamber. This feature allows tightening to prevent further leakage. Ensure the valve is turned off and the system is depressurized before making adjustments. Regular maintenance and inspections can help prevent stem leaks, ensuring optimal performance and longevity of the valve. Always follow the manufacturer’s guidelines for proper adjustment and repair procedures.
5.2 Resolving Flow Control Problems
Flow control issues with the Orbit Anti-Siphon Valve can often be resolved by ensuring the flow control stem is in the correct position. Verify that the stem is fully open (counter-clockwise) for proper water flow. If flow is restricted, check for debris or obstructions in the valve. Clean or replace any blocked components. Adjustments to the stem packing chamber may also be necessary to ensure smooth operation. Refer to the manual for detailed guidance on diagnosing and addressing flow control issues to restore optimal performance and prevent further complications.
5.3 Addressing Backflow Concerns
The Orbit Anti-Siphon Valve is designed to prevent backflow, ensuring water safety and system protection. If backflow occurs, inspect the valve’s installation and operation. Ensure the atmospheric vacuum break is functioning correctly and not obstructed. Check for proper alignment and connection to the manifold. If issues persist, verify that the flow control stem is fully open and free of debris. Regular maintenance, such as cleaning the valve, can prevent backflow concerns. Refer to the manual for detailed troubleshooting steps to resolve backflow issues effectively and maintain the integrity of your irrigation system.

Technical Specifications
The Orbit 57065 valve features a 3/4-inch brass construction, compatible with inline and anti-siphon systems, offering a standard pressure rating and 3/4-inch female thread connection.
6.1 Valve Size and Compatibility
The Orbit 57065 valve is a 3/4-inch brass anti-siphon valve, designed for compatibility with inline and anti-siphon irrigation systems. Its 3/4-inch female thread connection ensures easy integration with standard irrigation components. The valve is suitable for residential and light commercial applications, offering versatility for various water pressure conditions. Its compact size allows for installation in tight spaces, while its durable brass construction ensures long-term reliability. Compatibility with drip irrigation systems is also supported, making it a versatile choice for different watering needs. Proper sizing ensures optimal performance in preventing backflow and maintaining water safety.
6.2 Pressure Ratings

The Orbit 57065 valve is designed to handle a maximum pressure of 150 PSI, ensuring reliable performance in residential and light commercial irrigation systems. Its durable brass construction withstands typical water pressure fluctuations, maintaining consistent flow control. The valve operates effectively within a wide pressure range, making it suitable for various irrigation setups. Proper installation and adherence to pressure limits are crucial to prevent damage and ensure longevity. Exceeding the recommended pressure ratings may lead to valve failure. Always consult the manual for specific pressure guidelines to ensure safe and optimal operation of the Orbit anti-siphon valve.
6.3 Thread Type and Configuration
The Orbit 57065 valve features a 3/4-inch female thread type, ensuring compatibility with standard irrigation fittings. Its configuration supports both inline and anti-siphon setups, offering versatility for various irrigation needs. The valve’s thread design allows for secure connections using thread seal tape, which is recommended for a watertight seal. Proper threading ensures reliable performance and prevents leaks. The valve’s configuration is designed to integrate seamlessly with existing systems, making it a flexible choice for different irrigation applications. Always follow the manual’s guidelines for thread configuration to maintain optimal functionality and system integrity.

Warranty and Support
The Orbit Anti-Siphon Valve is backed by a manufacturer warranty. For support, contact customer service or access online resources and guides for troubleshooting and maintenance tips.
7.1 Manufacturer Warranty Details
The Orbit Anti-Siphon Valve is covered by a manufacturer warranty that ensures protection against defects in materials and workmanship. The warranty typically lasts for a specified period, such as five years, and applies to the original purchaser. It covers repairs or replacements for faulty components, provided the valve is installed and maintained according to the guidelines outlined in the manual. Proper installation and adherence to maintenance recommendations are essential to uphold warranty validity. For detailed terms and conditions, refer to the official manual or contact Orbit’s customer support team.
7.2 Customer Service Contact

Orbit provides dedicated customer service support to assist with inquiries, troubleshooting, and maintenance tips for the anti-siphon valve. Customers can reach out via phone, email, or through the official Orbit website. The support team is available to address any questions or concerns, ensuring a smooth experience with the product. For immediate assistance, contact Orbit’s customer service at their toll-free number or email address provided in the manual. This service is designed to help users optimize the performance and longevity of their Orbit Anti-Siphon Valve.
7.3 Online Resources and Guides
Orbit offers comprehensive online resources to support the anti-siphon valve, including downloadable manuals, installation guides, and troubleshooting tips. Users can access detailed instructions, diagrams, and FAQs on the official Orbit website. Additionally, video tutorials and interactive guides are available to help with setup and maintenance. The online portal provides a wealth of information to ensure optimal performance and address common issues. Visit the Orbit website to explore these resources and download the official manual for a seamless experience with your anti-siphon valve.
Safety Precautions
Ensure safe handling and installation of the Orbit Anti-Siphon Valve by following the manual’s guidelines. Adhere to local regulations to prevent backflow and ensure water safety.
8.1 Handling the Valve Safely
Handle the Orbit Anti-Siphon Valve with care to avoid damage. Always ensure the valve is turned off before handling. Use proper lifting techniques to prevent strain or injury. Avoid exposing the valve to extreme temperatures or chemicals. When transporting, secure the valve to prevent impact damage. Wear protective gloves and eyewear during installation or maintenance. Ensure the valve is installed in a well-ventilated area, away from direct sunlight. Follow the manual’s guidelines for safe handling to maintain the valve’s integrity and ensure optimal performance. Proper handling prevents accidents and extends the valve’s lifespan.
8.2 Compliance with Local Regulations
Ensure the Orbit Anti-Siphon Valve installation complies with local plumbing and irrigation codes. Verify that the valve meets all regional safety and environmental standards to prevent legal issues. Always follow guidelines set by local water authorities to avoid contamination risks. Proper installation and maintenance are crucial for compliance, as outlined in the manual. Regular inspections by certified professionals can help maintain adherence to regulations. Failure to comply may result in fines or system shutdowns. Adhere to all manufacturer recommendations to ensure the valve operates within legal and safety parameters, protecting both your system and water supply.
Downloading the Manual
To download the Orbit Anti-Siphon Valve manual, select the desired file and click the Download button. Enter the image code to verify and access the guide.
9.1 Accessing the Official Guide
To access the official Orbit Anti-Siphon Valve manual, visit the designated download page. Select the desired file from the list and click the Download button. You will be prompted to enter a verification code from the provided image. Once the code is correctly entered, a download link will appear. This guide provides detailed installation, maintenance, and troubleshooting instructions. It also includes diagrams and specifications to ensure proper setup and operation. Refer to this manual for step-by-step guidance on preventing backflow and maintaining water safety in your irrigation system.
9.2 Navigating the PDF Document
The Orbit Anti-Siphon Valve manual is organized into clear sections for easy navigation. The PDF document includes a table of contents with hyperlinked sections, allowing quick access to topics like installation, maintenance, and troubleshooting. Use the bookmarks panel in your PDF reader to jump between chapters. The document also features detailed diagrams and step-by-step instructions. To find specific information, use the search function by pressing Ctrl+F (Windows) or Cmd+F (Mac). This ensures you can efficiently locate guidance on preventing backflow, adjusting settings, or resolving common issues.

Conclusion
The Orbit Anti-Siphon Valve ensures safe and efficient irrigation by preventing backflow. Proper installation and regular maintenance are key to optimal performance. Refer to the manual for detailed guidance.
10.1 Final Tips for Optimal Use
For optimal performance, regularly inspect and maintain the Orbit Anti-Siphon Valve. Ensure proper installation by following the manual’s guidelines. Adjust the flow control stem as needed for precise water regulation. Seasonal preparation, such as winterizing, prevents damage from freezing temperatures. Monitor for leaks and address them promptly to avoid water waste. Use genuine Orbit replacement parts for any repairs. Always refer to the manual for troubleshooting common issues. By adhering to these tips, you’ll extend the valve’s lifespan and ensure reliable operation in your irrigation system.