Watts 909-AGF Air Gap Drain Fitting
Item Number: 0881378
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Brand - Watts
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- Compatible with Watts 009/LF009, 909/LF909 (1 1/4-3 inch) series
- Weight: 3.92 lb
- Compatible with Watts 009/LF009M1 (1 1/4-2 inch) and 009/LF009M2 (2 inch) series
- Connection: 2 inch Female NPT
- Installation: Vertical or Horizontal (vent elbow required for vertical)
- Provides physical separation for potable water supply
- Epoxy coated for durability
- Weight: 3.25 lbs
- Approved to ANSI/ASME A112.1.2
Description
Description
The Watts 909-AGF Air Gap Drain Fitting provides essential physical separation for potable water supply lines connecting to Reduced Pressure Zone (RPZ) backflow assemblies. This epoxy-coated fitting ensures safe discharge by directing any relief port flow to a drain. It is compatible with Watts 009/LF009, 909/LF909 (1 1/4-3 inch), 009/LF009M1 (1 1/4-2 inch), and 009/LF009M2 (2 inch) series backflow preventers. Featuring a 2 inch Female NPT connection at the bottom, it can be installed either vertically or horizontally. Approved to ANSI/ASME A112.1.2, it weighs 3.25 lbs. Item number 0881378.
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Connections & Compatibility
- The Watts 909-AGF Air Gap Drain Fitting is designed to connect to the relief port of Watts Reduced Pressure Zone (RPZ) backflow assemblies.
- It features a 2 inch Female NPT connection at the bottom to pipe discharged water to a drain.
- This air gap is compatible with the following Watts RPZ series:
- 009/LF009, 909/LF909 (1 1/4 inch to 3 inch sizes)
- 009/LF009M1 (1 1/4 inch to 2 inch sizes)
- 009/LF009M2 (2 inch size)
- The unit can be installed in either a vertical or horizontal orientation. For vertical installations, a separate vent elbow is required.

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Additional Details
The Watts 909-AGF Air Gap Drain Fitting provides an unobstructed physical separation between a potable water supply line and an open receiving vessel. It is primarily used with Reduced Pressure Zone (RPZ) backflow assemblies.
This air gap is designed to attach to the relief port of an RPZ backflow device and pipe to a drain to direct any discharge to a safe place. It can be installed for either vertical or horizontal installation; a vent elbow is required for vertical installations. The unit is epoxy coated for enhanced durability and is recommended for applications involving nuisance RV discharge.
Connections
- Features a 2 inch Female NPT connection at the bottom to connect to a drain line.
Approvals
- Approved to ANSI/ASME A112.1.2 standards.
Specifications
- Model: 909-AGF
- SKU: 0881378
- Connection Size: 2 inch Female NPT
- Overall Height (A): 4 3/8 inches (111 mm)
- Overall Width (B): 6 3/4 inches (171 mm)
- Weight: 3.25 lbs (1.47 kg)
- Coating: Epoxy coated
Compatibility
- Watts 009/LF009, 909/LF909 Series: 1 1/4 inch - 3 inch
- Watts 009/LF009M1 Series: 1 1/4 inch - 2 inch
- Watts 009/LF009M2 Series: 2 inch
Certificates & Approvals
- ANSI/ASME A112.1.2
FAQs
What is the primary purpose of the Watts 909-AGF Air Gap Drain Fitting?
It provides an unobstructed physical separation between a potable water supply line and an open receiving vessel, primarily used with Reduced Pressure Zone (RPZ) backflow assemblies to direct discharge to a drain.
What backflow preventer series is this air gap compatible with?
The 909-AGF is compatible with Watts 009/LF009, 909/LF909 (1 1/4-3 inch), 009/LF009M1 (1 1/4-2 inch), and 009/LF009M2 (2 inch) series backflow preventers.
What type of connection does this air gap have?
It features a 2 inch Female NPT connection at the bottom for easy attachment to a drain line.
Can the Watts 909-AGF be installed in any orientation?
Yes, it can be installed for either vertical or horizontal orientation. A vent elbow is required for vertical installation.
What approvals does this air gap hold?
The Watts 909-AGF Air Gap Drain Fitting is approved to ANSI/ASME A112.1.2 standards.