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Black malleable iron union coupling with threaded ends

Anvil

Anvil 463 Black Malleable Iron Union 3/4 inch coupling

SKU CH-4T9M-YZHPJ

A 3/4 inch malleable iron union rated for 300 psi at 150 degrees Fahrenheit, suitable for Schedule 40 piping systems

  • Class 150 rated for 300 psi working pressure
  • Malleable iron body resists corrosion and impact
  • Female NPT threads seal Schedule 40 pipe
  • Union design allows quick disassembly for maintenance

3/4 inch black malleable iron union

This Anvil 463 union connects two 3/4 inch female NPT pipes in a straight line. It is rated for Schedule 40 piping and Class 150 service. The malleable iron body handles a maximum operating pressure of 300 psi at 150 degrees F. It suits residential and light commercial plumbing installations.

Replaces worn or leaky threaded couplings

Use this union when a permanent coupling cannot be removed for maintenance or future changes. The ground-joint design allows disassembly without cutting pipe. It is not intended for high-pressure hydraulic systems exceeding the rated pressure or for pipes larger than the specified 3/4 inch size.

How it compares

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

Price $13.99
Cheaper than about 60% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameAnvil

Questions about this item

What pipe schedule does the 3/4 inch NPT union accept?

The Anvil 463 union is rated for Schedule 40 pipe with 3/4 inch female NPT threads on both ends.

How do you seat the union correctly and what is the common mistake?

Tighten the nut by hand, then wrench-turn one to two more turns; the mistake is over-tightening and cracking the malleable iron body.

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