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Galvanized malleable iron pipe coupling, 1-1/4 inch FNPT threads, silver-grey finish

Value Brand

Value Brand 1LBP3 1-1/4" FNPT Galvanized Coupling

SKU CH-K8H0-CDN6K

Galvanized malleable iron coupling with 1-1/4" FNPT threads, rated 1500 psi WOG and 300 psi steam, meeting ASME and ASTM standards

  • Galvanised malleable iron resists corrosion in water lines
  • Class 300 rating handles 1500 psi at 150 °F WOG
  • FM Approved and UL Listed for fire-protection systems
  • Meets ASME B16.3, B16.4, ASTM A47 and A197 standards
  • FNPT threads seal without welding or special tools

Product identity

This galvanized malleable iron coupling connects two 1-1/4 inch FNPT threaded pipes in water, oil or gas systems. It meets ASME B16.3, B16.4, ASTM A197 and ASTM A47 standards and carries FM and UL listings. The fitting is rated for 1500 psi at 150 degrees F WOG and 300 psi saturated steam. It is supplied new and compliant with California Proposition 65 warnings.

Installation check

Verify that both mating pipes have 1-1/4 inch FNPT threads and are made of a compatible metal to avoid galvanic corrosion. Confirm the system design pressure does not exceed the 1500 psi WOG or 300 psi steam ratings. Ensure thread sealant or tape suitable for the service fluid is available before assembly.

Service behaviour

The galvanized coating resists rust in typical plumbing environments but does not eliminate the Proposition 65 chemical warnings. Under normal pressure and temperature cycles the iron body remains dimensionally stable without measurable thermal expansion issues. No moving parts or seals mean silent operation and zero power consumption in service.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $9.99
Cheaper than about 70% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

Does the coupling come with thread sealant or do I need to buy it separately?

Only the galvanized malleable iron coupling is supplied; thread sealant or tape must be purchased separately.

Which pressure rating should I check for my steam line — the 1500 psi or the 300 psi figure?

Use the 300 psi saturated steam rating for steam service; the 1500 psi figure applies to water, oil or gas at 150 °F.

What does the ASME B16.3 and B16.4 marking mean once the fitting is installed?

It confirms the coupling meets the dimensional and material standards for Class 300 malleable iron threaded fittings.

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