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Watts Boiler Water Feed / Watts BackFlow Preventer
Prevents Boiler Water (Antifreeze) From Entering Domestic Water Supply
Watts Backflow Preventer Description
Dual Check Valve Type with Atmospheric Port used on boiler supply feed lines to prevent back flow when supply pressure falls below system pressure.
Model & Size
Connection
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Price
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9DS-M3
1/2 inch F x 1/2 inch F (sweat)
Solder
$52.75
$45.95
9D-M3
1/2 inch F x 1/2 inch F (npt)
1/2" NPT
(national pipe thread)
$54.95
$44.95
9DS-M2
3/4 inch F x 3/4 inch F (sweat)
Solder
$52.75
$45.95
9D-M2
3/4 inch F x 3/4 inch F (npt)
3/4" NPT
(national pipe thread)
$54.95
$44.95
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