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Watts LF 3004-1 dielectric straight coupling, zinc-plated galvanised steel, 1 inch NPT female threads, polysulfone insulator

Watts

Watts LF 3004-1 Dielectric Straight Coupling 1

SKU CH-0QS6-JTEH3

Connects 1-inch NPT pipes while preventing galvanic corrosion with a polysulfone insulator and Buna-N gasket, rated for 250 psi and 33 to 180 degrees F

  • Prevents galvanic corrosion with dielectric polysulfone insulator
  • Handles 250 psi maximum operating pressure reliably
  • Operates from 33 to 180 degrees Fahrenheit
  • Zinc-plated galvanized steel resists corrosion effectively
  • Female NPT threads ensure secure leak-free connections

Watts LF 3004-1 Dielectric Straight Coupling

The Watts LF 3004-1 is a dielectric straight coupling designed to connect two sections of 1 inch female NPT threaded pipe. Its steel body features a zinc-plated galvanised finish for corrosion resistance. An internal polysulfone insulator prevents galvanic corrosion between dissimilar metals. The assembly uses a Buna-N gasket for sealing.

Suits 1 inch NPT systems needing dielectric

Installers joining copper to steel or other mixed-metal piping at 1 inch NPT will find this coupling appropriate. It is not intended for pipe sizes other than 1 inch NPT. Applications requiring operating pressures above 250 psi or temperatures outside the 33 to 180 degrees F range should use alternative fittings.

250 psi maximum operating pressure rating

The coupling withstands up to 250 psi at temperatures between 33 and 180 degrees F. This pressure ceiling determines whether the fitting matches the system design. Verify the service conditions against this limit before installation.

Highlights

  • Prevents galvanic corrosion with dielectric polysulfone insulator
  • Handles 250 psi maximum operating pressure reliably
  • Operates from 33 to 180 degrees Fahrenheit
  • Zinc-plated galvanized steel resists corrosion effectively
  • Female NPT threads ensure secure leak-free connections

Specifications

BrandWATTS

Questions about this item

How can I verify the Watts LF 3004-1 coupling is functioning correctly after installation?

Pressurise the system up to 250 psi and check both 1 in Female NPT joints for leaks; the Buna-N gasket should seal without weeping at temperatures between 33 and 180 degrees F.

What components are included with the Watts LF 3004-1 coupling and what must be sourced separately?

The coupling arrives assembled with zinc-plated galvanised steel nuts, a polysulfone insulator and a Buna-N gasket; pipe thread sealant or tape for the NPT connections is not included.

Which version of the Watts LF 3004-1 dielectric straight coupling should I select for a 1 inch NPT piping system?

Choose the 1 in Female NPT by 1 in Female NPT model LF 3004-1; it matches 1 inch threaded pipe and provides a 2 1/2 in overall length for standard dielectric isolation.

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