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Manufacturer Resources
Product Specs
- Body Material:
- Black Plastic
- Buy American Act Compliant:
- No
- Ean:
- 98268126112
- Lead Free:
- Not In Scope
- Outlet Connection Size:
- 2 IN
- Outlet Connection Type:
- Female Threaded
- Outlet Thread Type:
- NPT
- Part Number:
- 111764
- Series:
- Air Gaps
- Valve Size:
- 2 1/2 to 10 IN
- Department:
- Plumbing
- Product Group:
- Plumbing
- Product Subgroup:
- Backflow Accessories
- Product Type:
- Air Gap
- Brand Name:
- Watts
Watts 957-AG – Frequently Asked Questions
1) Which Watts backflow preventers does the 957-AG air gap fit?
The 957-AG air gap is made for Watts 957 Series reduced pressure zone assemblies in the 2-1/2 inch through 10 inch valve sizes. It mounts under the relief valve port to carry discharge to the drain. If your assembly is a smaller 957 (under 2-1/2 inch) or a different Watts series, this is not the matching air gap fitting.
2) What size drain pipe does the Watts 957-AG air gap connect to?
The outlet is a 2 inch female NPT threaded connection, so it takes 2 inch male NPT pipe or a 2 inch male adapter into your drain line. Thread into it directly and run the indirect waste to the floor drain or receptor.
3) Do I need an air gap fitting on a Watts 957 RPZ, or can I pipe the relief port straight to the drain?
An RPZ relief port must discharge through an air gap, never hard-piped into the drain, so the 957-AG is the fitting that makes that installation code-legal on a 957 Series assembly. It captures the relief discharge and keeps an open break between the assembly and the waste line while directing water down a 2 inch NPT drain connection.
4) Is the Watts 957-AG air gap Buy American Act compliant for a government job?
No. The 957-AG is not Buy American Act compliant, so on a federal or BAA-restricted project it will not meet the domestic sourcing requirement and you will need a compliant alternative for that line item.
5) What part number do I order for the Watts 957 air gap?
Order by model 957-AG, Watts part number 111764. It is a single-configuration item, so there are no size or finish options to specify beyond confirming your 957 assembly falls in the 2-1/2 to 10 inch range.
6) What is the Watts 957-AG air gap made of, and will it hold up in a mechanical room?
The body is black plastic. It is a discharge funnel, not a pressure-carrying part, so it sees only intermittent relief flow and ambient mechanical room conditions. It is not a lead-free rated waterway component, since relief discharge is not in scope for potable lead-free requirements.
How fast can I get the Watts 957-AG delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Watts 957-AG come with a warranty?
Absolutely. The Watts 957-AG is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Watts 957-AG?
You can call, text, or email our expert support team for fast answers. We’re here to help with
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selection,
installation tips, and troubleshooting. Contact Us
Why buy the Watts 957-AG from ZenSupply?
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and
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every order.
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