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Galvanized malleable iron reducer coupling with tapered female threads

Anvil

Anvil 311088009 1-1/4" x 1/2" FNPT Galvanized Reducer Coupling

SKU CH-H1NX-5WZRS

Galvanized malleable-iron reducer coupling joins 1-1/4 in. to 1/2 in. FNPT pipe, rated 300 psi at 150 °F and 150 psi saturated steam at 350 °F

  • Connects 1-1/4" to 1/2" FNPT pipes securely
  • Galvanized malleable iron resists corrosion in water systems
  • Class 150 rating handles 300 psi at 150 °F WOG
  • FM approved and UL listed for code compliance
  • Meets ASME B 16.3 standard for dimensional accuracy

Anvil 1-1/4" x 1/2" FNPT Reducer

The Anvil 311088009 is a galvanized malleable iron reducer coupling designed for plumbing installations. It connects a 1-1/4 inch FNPT pipe to a 1/2 inch FNPT pipe in water, oil, or gas systems. The fitting meets ASTM A197, ASME B16.3, and carries FM and UL listings for code compliance.

Class 150 pressure rating

This coupling is rated for 300 psi at 150 degrees Fahrenheit WOG and 150 psi saturated steam at 350 degrees Fahrenheit. The operating temperature range spans -20 to 350 degrees Fahrenheit. These limits define the safe operating envelope for the fitting in any installation.

Installers needing a threaded transition

The FNPT threads suit installers joining dissimilar pipe sizes with standard tapered connections. It is not for systems requiring solder, press-fit, or grooved couplings. Buyers needing a different thread standard or a straight coupling should select an alternative fitting type.

How it compares

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

Price $15.99
Cheaper than about 55% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameANVIL

Questions about this item

What does the 300 psi rating mean once the reducer is installed in a real system?

It indicates the maximum working pressure of 300 psi at 150 °F for water, oil or gas service, so the joint will hold that pressure continuously when the piping is properly assembled.

How does the FNPT thread standard limit what can be connected to this fitting?

The FNPT female threads accept only matching male NPT pipe or nipples, creating a tapered seal that caps the connection to NPT-compatible components.

What physical clearance is needed to thread and tighten this 1-1/4" x 1/2" galvanized reducer?

You need enough space for a pipe wrench to engage the 1-1/4 inch hex body and for the male NPT pipe ends to fully enter both female ports without obstruction.

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