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Hexagonal malleable iron pipe bushing with threaded ends

Value Brand

Value Brand 521-916BC Hex Bushing 4 in x 1-1/4 in FNPT x MNPT

SKU CH-2JZY-19R2W

Malleable iron hex bushing reduces 4-inch male NPT to 1-1/4-inch female NPT for Schedule 40 pipe at Class 150 rating

  • Malleable iron construction rated for Class 150 pressure service
  • Male and female NPT threads enable direct pipe-to-pipe connection
  • Reduces 4 in pipe to 1-1/4 in diameter in one fitting
  • Schedule 40 compatibility suits standard plumbing installations
  • Zoro Select brand delivers consistent quality for professional use

Product Identity

This Zoro Select hex bushing connects a 4-inch male NPT pipe to a 1-1/4-inch female NPT fitting. It is made from malleable iron rated for Class 150 service on Schedule 40 pipe.

Upgrade Context

The fitting replaces a straight coupling when a pipe size reduction is required at a joint. The jump is worth it when the system design calls for a direct step-down without adding extra nipples or reducers.

Interface Limits

The NPT threads seal by taper engagement and require proper thread sealant or tape for a leak-free joint. Class 150 rating defines the maximum working pressure for the malleable iron body at standard temperatures.

How it compares

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

Price $14.99
Cheaper than about 58% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZoro Select

Questions about this item

What pipe sizes and thread types does the 4 in x 1-1/4 in hex bushing connect?

It joins a 4-inch male NPT thread to a 1-1/4-inch female NPT thread, both to Schedule 40 dimensions.

How do I install the malleable iron bushing without cracking the threads?

Clean threads, apply PTFE tape or pipe dope to the male end, hand-tighten then wrench-tighten one to two turns; overtightening is the common error.

When should the Class 150 malleable iron bushing be inspected or replaced?

Check for corrosion, leakage or thread deformation during routine system maintenance; replace if any damage is found.

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