Dielectric Unions

Dielectric Unions are used in commercial and residential applications to prevent accelerated corrosion and deterioration in the piping system due to galvanic and stray current. The galvanized steel nut connects the two tailpiece connections, one a galvanized steel IPS end and the other a brass sweat end that connects to copper pipe. The nylon insulator fits on the outside of the union to separate the galvanized steel and brass pieces. The silicone washer is designed to separate the metals inside the union, preventing the water from carrying an electric current and corroding the metal. Dielectric unions are ideal for hot water storage tanks, air conditioners, processing tanks, steam, gas, and water piping.

  • Galvanized steel nut and IPS connection
  • Brass sweat connection
  • Nylon insulator
  • Silicone rubber gasket/washer
  • Maximum pressure rating: 250 psi
  • Maximum temperature: 180°F
  • Threads conform to ANSI/ASME B1.20.1
  • Sweat connections conform to ANSI/ASME B16.18
  • Replacement insulators & washers also available
Stock Description Catalog Pg. Price
1/2" FPT x 1/2" Sweat Dielectric Union
24224
6.65/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
6.65/Each
3/4" FPT x 1/2" Sweat Dielectric Union
24225
8.11/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
8.11/Each
3/4" FPT x 3/4" Sweat Dielectric Union
24226
8.03/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
8.03/Each
1" FPT x 1" Sweat Dielectric Union
24227
11.07/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
11.07/Each
1-1/4" FPT x 1-1/4" Sweat Dielectric Union
24228
16.21/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
16.21/Each
1-1/2" FPT x 1-1/2" Sweat Dielectric Union
24229
22.22/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
22.22/Each
2" FPT x 2" Sweat Dielectric Union
24230
39.7/Each
P-436
39.7/Each
Not Available
1/2" MPT x 1/2" Sweat Dielectric Union
24231
8.11/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
8.11/Each
3/4" MPT x 3/4" Sweat Dielectric Union
24232
10.04/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
10.04/Each
1/2" Plastic Insulator Replacement for Dielectric Unions
24233
0.2/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.2/Each
3/4" Plastic Insulator Replacement for Dielectric Unions
24234
0.24/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.24/Each
1" Plastic Insulator Replacement for Dielectric Unions
24235
0.3/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.3/Each
1-1/4" Plastic Insulator Replacement for Dielectric Unions
24236
0.34/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.34/Each
1-1/2" Plastic Insulator Replacement for Dielectric Unions
24237
0.4/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.4/Each
2" Plastic Insulator Replacement for Dielectric Unions
24238
0.56/Each
P-436
0.56/Each
Not Available
1/2" Washer Replacement for Dielectric Unions
24239
0.26/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.26/Each
3/4" Washer Replacement for Dielectric Unions
24240
0.31/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.31/Each
1" Washer Replacement for Dielectric Unions
24241
0.35/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.35/Each
1-1/4" Washer Replacement for Dielectric Unions
24242
0.43/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.43/Each
1-1/2" Washer Replacement for Dielectric Unions
24243
0.55/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.55/Each
2" Washer Replacement for Dielectric Unions
24244
0.78/Each
Save 5%10+
Save 10%20+
Save 15%60+
P-436
0.78/Each

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