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Galvanized malleable iron coupling, cylindrical, silver-grey finish, threaded ends, 1-1/4 inch size

Anvil

Anvil 1121 galvanized malleable iron coupling class 150 right hand 1-1/4 in

SKU CH-JW2E-48V8S

Galvanized malleable iron coupling connects two 1-1/4 in NPT pipes at up to 300 psi and 150 °F

  • Galvanized malleable iron resists corrosion in plumbing systems
  • Class 150 rating suits standard Schedule 40 piping
  • 300 psi working pressure at 150 °F handles demanding applications
  • Right-hand NPT threads ensure secure female-to-female connections
  • Anvil 1121 model built for reliable fluid transfer

Anvil 1121 Class 150 Coupling

The Anvil 1121 is a galvanized malleable iron coupling rated Class 150 for 300 psi at 150 °F. It joins two sections of 1 1/4 inch Schedule 40 pipe using female NPT threads on both ends.

Installation and common issues

Thread the coupling onto prepared male NPT ends with appropriate sealant or tape. Malleable iron can crack if overtightened, and galvanized coating may flake if pipe dope contains harsh solvents.

Suitable uses and limits

This fitting suits water, air or oil lines that stay within the Class 150 pressure and temperature envelope. Installers needing left-hand threads, higher pressure classes or non-galvanised surfaces should select a different product.

How it compares

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

Price $11.99
Cheaper than about 65% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameAnvil

Questions about this item

How can I confirm the 1-1/4 in NPT coupling is sealing properly after installation?

Pressurise the system up to 300 psi at 150 °F and check for leaks at both female NPT threads; a tight joint with no weep indicates the class 150 malleable iron coupling is working as intended.

What comes with the Anvil 1121 coupling and what must I supply?

The box contains the single galvanized malleable iron right-hand coupling; you must provide Schedule 40 pipe, thread sealant or tape, and appropriate wrenches for the 1-1/4 in NPT connections.

Which class 150 coupling size should I select for 1-1/4 in Schedule 40 pipe?

Choose the 1-1/4 in female NPT version — model 1121 — which matches the pipe schedule and delivers the rated 300 psi at 150 °F for that diameter.

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