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Watts 757 Double Check Detector Assemblies

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Series 757NaDCDA Double Check Detector Assemblies prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating bi-link check valves, two shutoff valves, and four test cocks.
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Product Image of 4" 757 Double Check Detector Assembly (757DCDA-OSY-CFM)
$3,545.68 each
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Product Image of 4" 757 Double Check Detector Assembly, Lead Free (757DCDA-OSY-CFM)
$4,079.61 each
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Product Image of 3" 757 Double Check Detector Assembly (OSY-CFM)
$4,169.24 each
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Product Image of 6" 757 Double Check Detector Assembly (757DCDA-OSY-CFM)
$7,193.53 each
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Product Image of 6" 757 Double Check Detector Assembly (757DCDA-BFG-GPM)
$8,184.97 each
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Product Image of 4" 757 Double Check Detector Assembly (OSY-GPM)
$5,090.42 each
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Product Image of 6" 757 Double Check Detector Assembly (OSY-LM)
$6,272.19 each
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Product Image of 2-1/2" 757 Double Check Detector Assembly with OSY Shutoff Valves (757-OSY)
$2,802.64 each
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Product Image of 2-1/2" 757 Double Check Detector Assembly with NRS Shutoff Valves (757-NRS)
$2,756.20 each
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Product Image of 4" Double Check Detector Backflow Preventer, GPM Meter, LF757DCDA-OSY-GPM (Lead Free)
$5,215.35 each
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Product Image of 8" Lead Free Double Check Detector Backflow Preventer Assembly, OSY Shutoff Valves, Gallons/Minute Meter
$14,829.76 each
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Product Image of 6" Double Check Detector Backflow Preventer,  GPM Meter, LF757DCDA-OSY-GPM (Lead Free)
$7,879.05 each
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Get 5 by Mon, Mar 3 - Thu, Mar 6
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Resources
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Articles
More About Watts 757 Double Check Detector Assemblies
Series 757NaDCDA Double Check Detector Assemblies prevent the backflow of pollutants that are objectionable but not toxic, from entering into the potable water supply. Its compact housing consists of two independently operating bi-link check valves, two shutoff valves, and four test cocks.
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2-1/2" (2)
3" (1)
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6" (4)
8" (1)

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$3500 to $4000 (1)
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$10000 to $20000 (1)
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