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Dielectric Unions & Nipples

Dielectric Unions & Nipples

  • 3/4" Sweat x Female Dielectric Union <br>(Lead Free) Product Image
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    3/4" Sweat x Female Dielectric Union (Lead Free) DEU075CF 3/4" Sweat x Female Dielectric Union (Lead Free)
    SKU: DEU075CF
    Brand: Bluefin
    (3)
    $4.44 each
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    $104.50 box of 25
    $4.18 each
    66
    Wed, Apr 28
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  • 1" Sweat x Female Dielectric Union<br>(Lead Free) Product Image
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    1" Sweat x Female Dielectric Union (Lead Free) DEU100CF 1" Sweat x Female Dielectric Union (Lead Free)
    SKU: DEU100CF
    Brand: Bluefin
    (1)
    $7.79 each
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    $174.75 box of 25
    $6.99 each
    323
    Wed, Apr 28
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    323 Wed, Apr 28
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  • 3/4" FNPT x Copper Press Dielectric Union, P-571NL (Lead Free) Product Image
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    3/4" FNPT x Copper Press Dielectric Union, P-571NL (Lead Free) 301-104PNL 3/4" FNPT x Copper Press Dielectric Union, P-571NL (Lead Free)
    SKU: 301-104PNL
    Brand: Legend Valve
    $14.69 each
    482
    Wed, Apr 28
    482
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    482 Wed, Apr 28
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  • 3/4" LF3001A CxF Dielectric Union<br>(Lead Free) Product Image
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    3/4" LF3001A CxF Dielectric Union (Lead Free) 0009865 3/4" LF3001A CxF Dielectric Union (Lead Free)
    SKU: 0009865
    Brand: Watts
    (13)
    $11.21 each
      Box Up & Save 2%  
    $264.00 box of 24
    $11.00 each
    287
    Wed, Apr 28
    287
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    287 Wed, Apr 28
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  • 1-1/2" Sweat x Female Dielectric Union (Lead Free) Product Image
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    1-1/2" Sweat x Female Dielectric Union (Lead Free) DEU150CF 1-1/2" Sweat x Female Dielectric Union (Lead Free)
    SKU: DEU150CF
    Brand: Bluefin
    $13.79 each
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    $129.90 box of 10
    $12.99 each
    120
    Wed, Apr 28
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  • 1" LF3001A CxF<br>Dielectric Union<br>(Lead Free) Product Image
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    1" LF3001A CxF Dielectric Union (Lead Free) 0009866 1" LF3001A CxF Dielectric Union (Lead Free)
    SKU: 0009866
    Brand: Watts
    (13)
    $18.99 each
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    $218.28 box of 12
    $18.19 each
    101
    Wed, Apr 28
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    101 Wed, Apr 28
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  • 3/4" Male x Sweat Dielectric Union<br>(Lead Free) Product Image
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    3/4" Male x Sweat Dielectric Union (Lead Free) DEU075CM 3/4" Male x Sweat Dielectric Union (Lead Free)
    SKU: DEU075CM
    Brand: Bluefin
    (1)
    $6.09 each
      Box Up & Save 7%  
    $142.25 box of 25
    $5.69 each
    185
    Wed, Apr 28
    185
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    185 Wed, Apr 28
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  • 2" Sweat x Female Dielectric Union<br>(Lead Free) Product Image
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    2" Sweat x Female Dielectric Union (Lead Free) DEU200CF 2" Sweat x Female Dielectric Union (Lead Free)
    SKU: DEU200CF
    Brand: Bluefin
    (1)
    $23.59 each
      Box Up & Save 6%  
    $221.90 box of 10
    $22.19 each
    180
    Wed, Apr 28
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    180 Wed, Apr 28
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  • 1" x 4" Galvanized Steel Dielectric Nipple<br>w/ Pex Insulator Product Image
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    1" x 4" Galvanized Steel Dielectric Nipple w/ Pex Insulator DEN100-400 1" x 4" Galvanized Steel Dielectric Nipple w/ Pex Insulator
    SKU: DEN100-400
    Brand: Bluefin
    (1)
    $3.87 each
      Box Up & Save 9%  
    $88.00 box of 25
    $3.52 each
    810
    Wed, Apr 28
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  • 3/4" x 3" Galvanized Steel Dielectric Nipple<br>w/ Pex Insulator Product Image
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    3/4" x 3" Galvanized Steel Dielectric Nipple w/ Pex Insulator DEN075-300 3/4" x 3" Galvanized Steel Dielectric Nipple w/ Pex Insulator
    SKU: DEN075-300
    Brand: Bluefin
    (1)
    $2.87 each
      Box Up & Save 13%  
    $62.75 box of 25
    $2.51 each
    645
    Wed, Apr 28
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    645 Wed, Apr 28
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  • 3/4" CxF Dielectric Union<br>(Lead Free) Product Image
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    3/4" CxF Dielectric Union (Lead Free) 34-DUXLC 3/4" CxF Dielectric Union (Lead Free)
    SKU: 34-DUXLC
    Brand: Zurn
    $7.02 each
    174
    Wed, Apr 28
    174
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    174 Wed, Apr 28
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  • 1/2" Sweat x Female Dielectric Union <br>(Lead Free) Product Image
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    1/2" Sweat x Female Dielectric Union (Lead Free) DEU050CF 1/2" Sweat x Female Dielectric Union (Lead Free)
    SKU: DEU050CF
    Brand: Bluefin
    $3.53 each
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    $83.00 box of 25
    $3.32 each
    543
    Wed, Apr 28
    543
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    543 Wed, Apr 28
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  • 3/4" x 2-1/2" Galvanized Steel Dielectric Nipple<br>w/ Pex Insulator Product Image
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    3/4" x 2-1/2" Galvanized Steel Dielectric Nipple w/ Pex Insulator DEN075-250 3/4" x 2-1/2" Galvanized Steel Dielectric Nipple w/ Pex Insulator
    SKU: DEN075-250
    Brand: Bluefin
    (1)
    $2.22 each
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    $48.25 box of 25
    $1.93 each
    1,122
    Wed, Apr 28
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    1,122 Wed, Apr 28
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  • 3/4" 3003 FxF<br>Dielectric Union<br>(Lead Free) Product Image
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    3/4" 3003 FxF Dielectric Union (Lead Free) 0009875 3/4" 3003 FxF Dielectric Union (Lead Free)
    SKU: 0009875
    Brand: Watts
    (13)
    $21.42 each
    87
    Wed, Apr 28
    87
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    87 Wed, Apr 28
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  • 1" GB-C EPDM Hi-Temp Dielectric Gasket Kit Product Image
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    1" GB-C EPDM Hi-Temp Dielectric Gasket Kit 0881427 1" GB-C EPDM Hi-Temp Dielectric Gasket Kit
    SKU: 0881427
    Brand: Watts
    $8.39 each
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    $199.75 box of 25
    $7.99 each
    69
    Wed, Apr 28
    69
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    69 Wed, Apr 28
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  • 1" CxF Dielectric Union<br>(Lead Free) Product Image
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    1" CxF Dielectric Union (Lead Free) 1-DUXLC 1" CxF Dielectric Union (Lead Free)
    SKU: 1-DUXLC
    Brand: Zurn
    (1)
    $10.67 each
    179
    Wed, Apr 28
    179
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    179 Wed, Apr 28
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  • 3/4" FIP x 1/2" Sweat Dielectric Union<br>(Lead Free) Product Image
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    3/4" FIP x 1/2" Sweat Dielectric Union (Lead Free) DEU050C-075F 3/4" FIP x 1/2" Sweat Dielectric Union (Lead Free)
    SKU: DEU050C-075F
    Brand: Bluefin
    $4.44 each
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    $104.50 box of 25
    $4.18 each
    50
    Wed, Apr 28
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    50 Wed, Apr 28
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  • 3/4" x 4" Galvanized Steel Dielectric Nipple<br>w/ Pex Insulator Product Image
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    3/4" x 4" Galvanized Steel Dielectric Nipple w/ Pex Insulator DEN075-400 3/4" x 4" Galvanized Steel Dielectric Nipple w/ Pex Insulator
    SKU: DEN075-400
    Brand: Bluefin
    (1)
    $2.96 each
      Box Up & Save 12%  
    $64.75 box of 25
    $2.59 each
    329
    Wed, Apr 28
    329
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    329 Wed, Apr 28
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  • 1" FNPT x Copper Press Dielectric Union, P-571NL (Lead Free) Product Image
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    1" FNPT x Copper Press Dielectric Union, P-571NL (Lead Free) 301-105PNL 1" FNPT x Copper Press Dielectric Union, P-571NL (Lead Free)
    SKU: 301-105PNL
    Brand: Legend Valve
    $20.59 each
    160
    Wed, Apr 28
    160
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    160 Wed, Apr 28
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  • 1-1/4" GB-D EPDM Hi Temp Dielectric Gasket (Set of 2) Product Image
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    1-1/4" GB-D EPDM Hi Temp Dielectric Gasket (Set of 2) 0881428 1-1/4" GB-D EPDM Hi Temp Dielectric Gasket (Set of 2)
    SKU: 0881428
    Brand: Watts
    $12.07 each
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    $287.25 box of 25
    $11.49 each
    64
    Wed, Apr 28
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    64 Wed, Apr 28
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  • 3/4" LF3004 FxF <br>Dielectric Union<br>(Lead Free) Product Image
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    3/4" LF3004 FxF Dielectric Union (Lead Free) 0821931 3/4" LF3004 FxF Dielectric Union (Lead Free)
    SKU: 0821931
    Brand: Watts
    $17.63 each
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    $200.28 box of 12
    $16.69 each
    21
    Wed, Apr 28
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    21 Wed, Apr 28
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  • 1/2", 3/4" GA-B Buna Dielectric Gasket Kit (2 Gaskets Per Kit) Product Image
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    1/2", 3/4" GA-B Buna Dielectric Gasket Kit (2 Gaskets Per Kit) 0881401 1/2", 3/4" GA-B Buna Dielectric Gasket Kit (2 Gaskets Per Kit)
    SKU: 0881401
    Brand: Watts
    $2.62 each
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    $62.25 box of 25
    $2.49 each
    24
    Wed, Apr 28
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  • 1-1/2" x 4" Galvanized Steel Dielectric Nipple<br>w/ Pex Insulator Product Image
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    1-1/2" x 4" Galvanized Steel Dielectric Nipple w/ Pex Insulator DEN150-400 1-1/2" x 4" Galvanized Steel Dielectric Nipple w/ Pex Insulator
    SKU: DEN150-400
    Brand: Bluefin
    (1)
    $5.89 each
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    $134.75 box of 25
    $5.39 each
    377
    Wed, Apr 28
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    377 Wed, Apr 28
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  • 2" x 4" Galvanized Steel Dielectric Nipple<br>w/ Pex Insulator Product Image
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    2" x 4" Galvanized Steel Dielectric Nipple w/ Pex Insulator DEN200-400 2" x 4" Galvanized Steel Dielectric Nipple w/ Pex Insulator
    SKU: DEN200-400
    Brand: Bluefin
    $8.29 each
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    $149.80 box of 20
    $7.49 each
    255
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FAQs, Manuals & Videos

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  • Applications
    A dielectric union is utilized in a plumbing system to make a connection between two pipes of dissimilar metal (such as copper and galvanized Steel). The installation of a dielectric union to separate the two dissimilar metals will prevent corrosion that would otherwise occur over time. They are used in many common residential and commercial applications including: hot water storage tanks, water and air conditioners, and processing tanks and are commonly found in steam, gas, and water piping systems.

    How does a Dielectric Union prevent corrosion?
    Generally all tap water is slightly acidic or basic. When tap water flows through two pipes of dissimilar metal (such as Copper and Galvanized Steel), an electric current is created. The chemical reaction created by the electric current will ultimately erode one of the metals, while simultaneously forming a buildup of new material on the second metal. This buildup of new material typically consists of substance from the eroded metal, and the acid produced during the chemical process.

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