Watts 0881376 Air Gap

As a field technician, you know that managing relief valve discharge is critical for system safety and code compliance. The Watts 0881376, also identified as the 909-AG-C or 909AGC, is a heavy-duty cast iron air gap designed to provide the required physical separation between the potable water supply and potential contaminants. Specifically engineered for 3/4" to 1" Series 009 and 909 reduced pressure zone (RPZ) assemblies, this component is also compatible with 1" to 1-1/2" 009M2 and 1-1/4" to 2" 995 series backflow preventers. It serves the vital role of capturing nuisance discharge and directing it safely to a floor drain, preventing localized flooding and protecting the backflow preventer from submersion. This RPZ air gap ensures that your cross-connection control setup meets local plumbing codes by maintaining a fixed, unobstructed atmospheric break. The 1" NPT female threaded outlet allows for easy hard-piping of the drain line, and the unit includes all necessary mounting hardware for a secure fit on the relief valve body.

• Backflow Prevention Compliance: Facilitates an ASHRAE-standard physical separation to prevent cross-contamination during relief valve discharge.
• Durable Cast Iron Construction: Features a rugged metal body with a protective coating to withstand mechanical stress and humid mechanical room environments.
• Versatile Mounting: Supports both horizontal and vertical installations, though a vent elbow is required for vertical configurations to ensure proper drainage.
• Comprehensive Compatibility: Drops directly onto Watts 909-AG-C applications and serves as a direct replacement for 881376 or 909AGC models.
• System Protection: Effectively diverts water away from sensitive internal components, reducing the risk of RPZ assembly fouling and maintenance downtime.

Which backflow preventers is the Watts 0881376 compatible with?
This air gap is optimized for 3/4" and 1" Watts Series 009/909, 1" to 1-1/2" Series 009M2, and 1-1/4" to 2" Series 995. Always verify the relief valve flange size before installation.

Can I install the 909-AG-C in a vertical piping run?
Yes, it can be installed vertically, but you must use a vent elbow. This prevents the formation of a vacuum and ensures the air gap functions as intended by maintaining atmospheric pressure.

Does the Watts 0881376 include the mounting bolts?
Yes, this part comes with the required hardware to secure the air gap directly to the bottom of the relief valve assembly.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.