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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)
    $3.75 each
      Box Up & Save 6%  
    $88.25 box of 25
    $3.53 each
    262
    Wed, Oct 7
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    262 Wed, Oct 7
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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)
    $6.59 each
      Box Up & Save 11%  
    $147.25 box of 25
    $5.89 each
    264
    Wed, Oct 7
    264
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    264 Wed, Oct 7
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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)
    $11.29 each
      Box Up & Save 4%  
    $258.96 box of 24
    $10.79 each
    98
    Wed, Oct 7
    98
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    98 Wed, Oct 7
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  • 1-1/4" Sweat x Female Dielectric Union<br>(Lead Free) Product Image
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    1-1/4" Sweat x Female Dielectric Union (Lead Free) DEU125CF 1-1/4" Sweat x Female Dielectric Union (Lead Free)
    SKU: DEU125CF
    Brand: Bluefin
    (2)
    $7.79 each
      Box Up & Save 6%  
    $72.90 box of 10
    $7.29 each
    333
    Wed, Oct 7
    333
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    333 Wed, Oct 7
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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
    $11.69 each
      Box Up & Save 6%  
    $109.90 box of 10
    $10.99 each
    479
    Wed, Oct 7
    479
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    479 Wed, Oct 7
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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)
    $17.49 each
      Box Up & Save 5%  
    $200.28 box of 12
    $16.69 each
    82
    Wed, Oct 7
    82
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    82 Wed, Oct 7
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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)
    $5.19 each
      Box Up & Save 6%  
    $122.25 box of 25
    $4.89 each
    896
    Wed, Oct 7
    896
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    896 Wed, Oct 7
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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)
    $19.95 each
      Box Up & Save 6%  
    $187.90 box of 10
    $18.79 each
    285
    Wed, Oct 7
    285
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    285 Wed, Oct 7
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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)
    $20.40 each
    67
    Wed, Oct 7
    67
    QtyArrives
    67 Wed, Oct 7
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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
    $2.99 each
      Box Up & Save 6%  
    $70.25 box of 25
    $2.81 each
    5
    Wed, Oct 7
    5
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    5 Wed, Oct 7
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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)
    $3.44 each
      Box Up & Save 9%  
    $78.25 box of 25
    $3.13 each
    720
    Wed, Oct 7
    720
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    720 Wed, Oct 7
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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)
    $5.31 each
      Box Up & Save 8%  
    $122.25 box of 25
    $4.89 each
    448
    Wed, Oct 7
    448
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    448 Wed, Oct 7
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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)
    $2.71 each
      Box Up & Save 13%  
    $59.25 box of 25
    $2.37 each
    276
    Wed, Oct 7
    276
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    276 Wed, Oct 7
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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)
    $1.97 each
      Box Up & Save 13%  
    $43.00 box of 25
    $1.72 each
    1,091
    Wed, Oct 7
    1,091
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    1,091 Wed, Oct 7
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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
    $13.99 each
    Fri, Oct 9 – Mon, Oct 12
    Arrives
    Fri, Oct 9 – Mon, Oct 12
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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)
    $2.63 each
      Box Up & Save 13%  
    $57.50 box of 25
    $2.30 each
    470
    Wed, Oct 7
    470
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    470 Wed, Oct 7
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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
    $7.34 each
      Box Up & Save 8%  
    $134.40 box of 20
    $6.72 each
    593
    Wed, Oct 7
    593
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    593 Wed, Oct 7
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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
    $16.79 each
      Box Up & Save 5%  
    $190.56 box of 12
    $15.88 each
    101
    Wed, Oct 7
    101
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    101 Wed, Oct 7
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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
    $11.49 each
      Box Up & Save 4%  
    $274.75 box of 25
    $10.99 each
    43
    Wed, Oct 7
    43
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    43 Wed, Oct 7
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  • 1-1/4" LF3001A CxF Dielectric Union<br>(Lead Free) Product Image
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    1-1/4" LF3001A CxF Dielectric Union (Lead Free) 0009867 1-1/4" LF3001A CxF Dielectric Union (Lead Free)
    SKU: 0009867
    Brand: Watts
    (13)
    $33.59 each
    14
    Wed, Oct 7
    15
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    14 Wed, Oct 7
    1 Thu, Oct 8
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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
    $7.99 each
      Box Up & Save 5%  
    $189.75 box of 25
    $7.59 each
    80
    Wed, Oct 7
    80
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    80 Wed, Oct 7
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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
    $3.75 each
      Box Up & Save 6%  
    $88.25 box of 25
    $3.53 each
    235
    Wed, Oct 7
    235
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    235 Wed, Oct 7
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  • 1-1/2" LF3001A CxF Dielectric Union<br>(Lead Free) Product Image
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    1-1/2" LF3001A CxF Dielectric Union (Lead Free) 0009868 1-1/2" LF3001A CxF Dielectric Union (Lead Free)
    SKU: 0009868
    Brand: Watts
    (13)
    $44.99 each
    59
    Wed, Oct 7
    59
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    59 Wed, Oct 7
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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
    $2.49 each
      Box Up & Save 4%  
    $59.75 box of 25
    $2.39 each
    107
    Wed, Oct 7
    107
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    107 Wed, Oct 7
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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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