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Malleable iron hex bushing with tapered threads

Value Brand

Value Brand Malleable Iron Hex Bushing Class 150

SKU CH-XZ1A-RJN5G

Malleable iron hex bushing reduces 3-inch FNPT to 1-1/4-inch MNPT, rated Class 150 for 300 psi at 150 °F and 150 psi saturated steam

  • Connects 3 in to 1 1/4 in FNPT x MNPT for pipe reduction
  • Malleable iron construction rated to 300 psi at 150 °F for strength
  • Meets ASME B 16.3, B 16.4 and ASTM A-197, A47 standards
  • FM Approved and UL Listed for code compliance
  • Operates from -20 °F to 366 °F across steam and water systems

Hex Bushing 3 in x 1 1/4 in

This malleable iron hex bushing reduces a 3 inch female NPT connection to a 1 1/4 inch male NPT connection. It is rated for Class 150 service and meets ASME B 16.3 and B 16.4 standards. The fitting suits plumbing and industrial piping systems requiring a durable transition between pipe sizes.

Pressure and temperature ratings

The bushing handles a maximum pressure of 300 psi at 150 degrees F and a saturated steam pressure of 150 psi. Its operating temperature range extends from -20 degrees to 366 degrees F. Buyers needing higher pressure classes or different temperature limits should select an alternative fitting.

Installation and common issues

The hex shape allows tightening with a standard wrench for a secure threaded seal. Applying appropriate thread sealant prevents leaks at the FNPT and MNPT joints. Over-tightening can crack the malleable iron body, so installers should follow recommended torque practices.

How it compares

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

Price $10.99
Cheaper than about 68% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameZORO SELECT

Questions about this item

How does the 300 psi pressure rating hold up when the fitting is installed in a live system?

The 300 psi rating applies at 150 °F; above that temperature the allowable pressure drops according to the Class 150 schedule.

What do the ASME B16.3 and B16.4 standards actually limit on this bushing?

They govern thread dimensions, wall thickness and material quality for Class 150 malleable-iron fittings, ensuring compatibility with standard NPT piping.

What size wrench flats does the hex section provide for installation?

The hex bushing design gives standard wrench flats for a 3 in × 1 1/4 in NPT fitting, allowing a pipe wrench to engage without damaging threads.

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