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American Standard Concealed Back Spud Vacuum Breaker Assembly - AMS-M950217
Model: AMS-M950217
Concealed Back Spud Vacuum Breaker AssemblyConcealed Back Spud Flush ConnectionFor use with 606X.2X2 model seriesAll chrome pieces to comply with ASQ5002 Salt Spray Testing
American Standard
$253.89
$229.14
Vac Brkr Conn Kit Conc (Back Spud)
Manufacturer Resources
Product Specs
- Product Type:
- Vacuum Breaker
- Product Group:
- Washroom/Bath Accessories
- Product Subgroup:
- Parts and Accessories
- Department:
- Plumbing
- Parts and Accessories Type:
- Vacuum Breaker
- Application:
- Toilet
- Product Color:
- Chrome
- Country of Origin:
- Mexico
American Standard M964939-0020A – Frequently Asked Questions
1) What is the American Standard M964939 vacuum breaker connection kit used for?
It is a vacuum breaker connection kit for toilets, used on the flush valve supply connection to prevent back-siphonage into the potable water line. The concealed (back spud) version is built for fixtures where the flush connection enters the bowl from the rear and the trim is hidden behind the wall line.
2) Will this American Standard vacuum breaker kit work on a top spud toilet?
No. The M964939 kit is the concealed back spud version, meaning it is intended for bowls where the flush valve connects at the rear spud with concealed piping. A top spud bowl, where the flush connection drops into the top of the china, needs the exposed top spud connection kit instead. Check which spud your bowl has before ordering.
3) What is the part number and finish for the American Standard back spud vacuum breaker connection kit?
Order it as M964939-0020A. It is supplied in chrome, which is the only finish offered on this kit, so the exposed portions of the connection match standard chrome commercial flush valve trim.
4) Do I need a vacuum breaker on a flushometer toilet, or is the flush valve enough?
A flushometer connection on a toilet needs backflow protection on the fixture side, and that is the job this kit does. The flush valve itself controls the flush volume; the vacuum breaker in the connection assembly keeps bowl water from being siphoned back into the supply if line pressure drops. On concealed back spud installations, the M964939-0020A kit provides that connection.
5) Is this a repair part or a complete flush valve for an American Standard toilet?
It is a connection kit, not a flush valve. You get the vacuum breaker connection assembly that ties the valve to a concealed back spud bowl. If the valve body itself is failing, you are replacing the flushometer; if the connection tube or vacuum breaker is leaking or fouled, this chrome kit is the part to order.
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Does the American Standard M964939-0020A come with a warranty?
Absolutely. The American Standard M964939-0020A is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
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