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  1. Home
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  3. Plumbing
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  5. Pipes, Valves & Fittings
  6. /
  7. Fittings
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  9. Dielectric Unions

Dielectric Unions (314 items) - Page 6

Legend Valve 1-1/2" T-578 DIELECTRIC COUP. 301-537
Legend Valve

1-1/2" T-578 DIELECTRIC COUP.

Zoro # G1768970
Mfr # 301-537
product price:  $52.39
/ea
Richmond RP12992 Nipple with Heat Trap, Zinc Plated Steel/Polypropylene SP20003
Richmond

RP12992 Nipple with Heat Trap, Zinc Plated Steel/Polypropylene

Zoro # G313994000
Mfr # SP20003
product price:  $16.89
/ea
B & K 888-239 Dielectric Union Rubber Washer 0.5 in., 5PK 4008371
B & K

888-239 Dielectric Union Rubber Washer 0.5 in., 5PK

Zoro # G910954353
Mfr # 4008371
product price:  $45.65
/pk 5, $9.13/ea
Legend Valve 1-1/4" T-572 DIELECTRIC UNION 301-306
Legend Valve

1-1/4" T-572 DIELECTRIC UNION

Zoro # G1776086
Mfr # 301-306
product price:  $28.59
/ea
Wilkins 112-DUXL - Dielectric Union 112-DUXL
Wilkins

112-DUXL - Dielectric Union

Zoro # G2642660
Mfr # 112-DUXL
product price:  $149.99
/ea
Legend Valve 1-1/4SX1-1/2M TRAP CONN W/CH N 302-107
Legend Valve

1-1/4SX1-1/2M TRAP CONN W/CH N

Zoro # G1782456
Mfr # 302-107
product price:  $12.49
/ea
Legend Valve 1/2" T-572 DIELECTRIC UNION 301-303
Legend Valve

1/2" T-572 DIELECTRIC UNION

Zoro # G1784510
Mfr # 301-303
product price:  $8.55
/ea
Everflow MIPxSWT Dielectric Union Pipe Fitting 3/4" DUMS0034-NL
Everflow

MIPxSWT Dielectric Union Pipe Fitting 3/4"

Zoro # G201106942
Mfr # DUMS0034-NL
product price:  $8.19
/ea
Homewerks 34 Dielectric Union 520-01-34-34B-Z
Homewerks

34 Dielectric Union

Zoro # G607942915
Mfr # 520-01-34-34B-Z
product price:  $9.99
/ea
Sold in mult. of 30 for $299.70
Wilkins 114-DUXL - Dielectric Union 114-DUXL
Wilkins

114-DUXL - Dielectric Union

Zoro # G2642511
Mfr # 114-DUXL
product price:  $101.99
/ea
Legend Valve 3" D.U. STEAM INSERT 301-450
Legend Valve

3" D.U. STEAM INSERT

Zoro # G1800166
Mfr # 301-450
product price:  $4.45
/ea
Sold in mult. of 2 for $8.90
Legend Valve 2-1/2" D.U. STEAM INSERT 301-449
Legend Valve

2-1/2" D.U. STEAM INSERT

Zoro # G1796964
Mfr # 301-449
product price:  $4.59
/ea
Sold in mult. of 2 for $9.18
Jomar Valve LF Dielectric Union FIPxSolder, 11/4" DUG
Jomar Valve

LF Dielectric Union FIPxSolder, 11/4"

Zoro # G7208708
Mfr # DUG
product price:  $28.69
/ea
Legend Valve 3" D.U. STEAM GASKET 301-440
Legend Valve

3" D.U. STEAM GASKET

Zoro # G1800400
Mfr # 301-440
product price:  $18.19
/ea
Legend Valve 1-1/2SX1-1/2F TRAP CONN W/CH N 302-118
Legend Valve

1-1/2SX1-1/2F TRAP CONN W/CH N

Zoro # G1794654
Mfr # 302-118
product price:  $9.59
/ea
Legend Valve 1-1/4" T-578 DIELECTRIC COUP. 301-536
Legend Valve

1-1/4" T-578 DIELECTRIC COUP.

Zoro # G1769725
Mfr # 301-536
product price:  $28.99
/ea
Swivel 61265 Dielectric Union Washer  1.5 in., 10PK SW2513375
Swivel

61265 Dielectric Union Washer 1.5 in., 10PK

Zoro # G911952358
Mfr # SW2513375
product price:  $34.55
/pk 10, $3.45/ea
Legend Valve 4" D.U. RUBBER GASKET-EPDM 301-411
Legend Valve

4" D.U. RUBBER GASKET-EPDM

Zoro # G1842044
Mfr # 301-411
product price:  $6.75
/ea
Sold in mult. of 2 for $13.50
Smith-Cooper FIPXFIP Dielectric Union, NL 1" 4347004020
Smith-Cooper

FIPXFIP Dielectric Union, NL 1"

Zoro # G6776277
Mfr # 4347004020
product price:  $7.29
/ea
Sold in mult. of 2 for $14.58
Mueller Industries B&K ProLine 3/4 in. FIP X 1/2 in. D Solder Galvanized Brass Dielectric Union 168-094NL
Mueller Industries

B&K ProLine 3/4 in. FIP X 1/2 in. D Solder Galvanized Brass Dielectric Union

Zoro # G3889336
Mfr # 168-094NL
product price:  $13.99
/ea
B & K Mueller 3/4 in. MIP X 1/2 in. D Sweat Galvanized Brass/Copper/Steel Dielectric Union 167-094NL
B & K

Mueller 3/4 in. MIP X 1/2 in. D Sweat Galvanized Brass/Copper/Steel Dielectric Union

Zoro # G3898521
Mfr # 167-094NL
product price:  $14.85
/ea
Ez-Fluid 1/2 FIP X 1/2 Sweat Dielectric Union EZDU12
Ez-Fluid

1/2 FIP X 1/2 Sweat Dielectric Union

Zoro # G115657110
Mfr # EZDU12
product price:  $6.15
/ea
Sold in mult. of 2 for $12.30
Legend Valve 2" T-574 BLACK DIELECTRIC 301-338
Legend Valve

2" T-574 BLACK DIELECTRIC

Zoro # G1789097
Mfr # 301-338
product price:  $54.59
/ea
Nibco 3/4'' Press x 3/4'' FIP Brass Sweat Galvanized Dielectric Union H-81103W
Nibco

3/4'' Press x 3/4'' FIP Brass Sweat Galvanized Dielectric Union

Zoro # G721868498
Mfr # H-81103W
product price:  $35.89
/ea
Legend Valve 1-1/2"FXST571 NO LEAD DI UNION 301-107NL
Legend Valve

1-1/2"FXST571 NO LEAD DI UNION

Zoro # G1763346
Mfr # 301-107NL
product price:  $22.45
/ea
Homestead DU-COPW07 0.75 x 1.5 in. Dielectric Union Washer, 10PK HO588675
Homestead

DU-COPW07 0.75 x 1.5 in. Dielectric Union Washer, 10PK

Zoro # G915758666
Mfr # HO588675
product price:  $21.89
/pk 10, $2.19/ea
Mueller Industries Mueller 3/4 in. MIP Sizes X 3/4 in. D Compression Brass Dielectric Union 167-004NL
Mueller Industries

Mueller 3/4 in. MIP Sizes X 3/4 in. D Compression Brass Dielectric Union

Zoro # G3899772
Mfr # 167-004NL
product price:  $16.65
/ea
Legend Valve 3/4"F X 1/2"S T571 NO LEAD DU 301-123NL
Legend Valve

3/4"F X 1/2"S T571 NO LEAD DU

Zoro # G1846740
Mfr # 301-123NL
product price:  $7.85
/ea
Sold in mult. of 2 for $15.70
B & K B&K Mueller 1/2 in. D Rubber Dielectric Union Washer 5 888-239
B & K

B&K Mueller 1/2 in. D Rubber Dielectric Union Washer 5

Zoro # G705266005
Mfr # 888-239
product price:  $1.95
/ea
Sold in mult. of 5 for $9.75
B & K 888-240 Dielectric Union Rubber Washer 0.75 in., 5PK 4008389
B & K

888-240 Dielectric Union Rubber Washer 0.75 in., 5PK

Zoro # G210941602
Mfr # 4008389
product price:  $27.75
/pk 5, $5.55/ea
Legend Valve GROMMET FOR 4" DIEL. UNION 301-421
Legend Valve

GROMMET FOR 4" DIEL. UNION

Zoro # G1804734
Mfr # 301-421
product price:  $1.79
/ea
Sold in mult. of 6 for $10.74
Everflow MIP 3/4'' DNTT3425
Everflow

MIP 3/4''

Zoro # G901106945
Mfr # DNTT3425
product price:  $4.99
/ea
Sold in mult. of 2 for $9.98
Legend Valve 3/4"FNPT x 1/2"P P-571NL DU 301-123PNL
Legend Valve

3/4"FNPT x 1/2"P P-571NL DU

Zoro # G1837135
Mfr # 301-123PNL
product price:  $18.49
/ea
Everflow MIPxSWT Dielectric Union Pipe Fitting 3/4"x1/2" DUMS3412-NL
Everflow

MIPxSWT Dielectric Union Pipe Fitting 3/4"x1/2"

Zoro # G401106940
Mfr # DUMS3412-NL
product price:  $9.39
/ea
Everflow FIPxSWT Dielectric Union Pipe Fitting 1-1/2" DUFS0112-NL
Everflow

FIPxSWT Dielectric Union Pipe Fitting 1-1/2"

Zoro # G601106931
Mfr # DUFS0112-NL
product price:  $26.69
/ea
Tool Nipple Dielectric Union, 3 in. TO3258659
Tool

Nipple Dielectric Union, 3 in.

Zoro # G514871193
Mfr # TO3258659
product price:  $17.75
/ea
Dielectric Unions (314 items) - Page 6
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About Dielectric Unions

Dielectric Unions are an important conduit fitting used to connect different types of pipes together. They provide a secure and reliable connection between two pieces of piping, preventing corrosion or other damage that could be caused by dissimilar materials coming into contact with one another.

Types of Dielectric Unions

Dielectric Unions come in a variety of sizes and shapes to fit the needs of any job. Depending on the application, they may include dielectric nipples or unions, dielectric pipe couplings, stainless steel to brass dielectric unions, and sharkbite dielectric unions. Each type is designed for specific applications, so it’s important to choose the right one for your project.

How Dielectric Unions are Made

Dielectric Unions are made from a variety of materials such as brass, copper, steel, and plastic. The union consists of two end fittings that are connected by a nut and washer assembly which creates a tight seal between the two pipes when tightened. This prevents any current from passing through the joint.

Industries that use Dielectric Unions

Dielectric Unions are commonly used in plumbing, gas piping, electrical conduit installation and many other industries where connections need to be made between two different types of material. Professionals must know when to use them in order to ensure proper installation and prevent leaks or damage.

Find the Dielectric Unions You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of plumbing tools & supplies, along with other equipment and essentials to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.
Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

Related Categories

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