Pipeline Protection Products, Underground Tapes,
Polyethylene Encasement For Ductile Iron Pipe
Pipe Coatings, Pipe Tapes, Cathodic Protection, Safety Products.

Cathodic Protection

INSULATION COUPLINGS
STOP CORROSION CAUSED BY DISSIMILAR METALS

Insulation Couplings are an excellent and economical means of providing dielectric protection from electrolysis.

Insulation Couplings stop electrolytic corrosion on all water piping where dissimilar metals are joined together.

  • Designed for use in water piping with Hydrostatic Pressure up to 300 psi and temperatures up to 225 F.
  • 8 sizes: 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 2 1/2" and 3".
  • Couplings must not be used for steam installations.



Typical Specification

Insulation Couplings provide dielectric protection from electrolytic corrosion at all points where piping of dissimilar metals are joined (copper to steel, etc.).

Couplings are designed for use in water piping with Hydrostatic Pressure up to 300 psi and temperatures up to 225F.

Couplings are lined with an inert, non-conductive, linen-impregnated laminate material and threaded to NPS standards with sufficient separation between pipe ends to prevent "bridging".

 

Dimension:
Pipe
Size
Threads
A
Diameter
B
OAL
C

Separation
D
Steel Wall
Thickness
1/2"
9/16"
1 3/16"
1 9/16"
7/16"
13 Ga.
3/4"
5/8"
1 3/8"
1 13/16"
9/16"
13 Ga.
1"
5/8"
1 5/8"
1 13/16"
9/16"
13 Ga.
1 1/4"
11/16"
2 1/8"
2 1/8"
3/4"
5/32"
2
3/4"
3"
2 1/2"
1"
5/32"
2 1/2"
1
3 1/2"
3"
1"
3/16"
3"
1"
4 1/2"
3"
1"
3/16"
 
Northtown Company - 5202 Argosy Ave., Huntington Beach, CA 92649 - Phone: 714-897-0700 - Fax: 714-897-0600