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Hexagonal malleable iron pipe bushing with threaded ends

Value Brand

Value Brand 5P524 Hex Bushing 1-1/2" x 1" FNPT x MNPT

SKU CH-C5KZ-2VFKX

A malleable iron hex bushing connects 1-1/2 inch female NPT to 1 inch male NPT pipe threads at Class 150 pressure rating

  • Class 150 pressure rating handles standard plumbing loads
  • Malleable iron construction resists cracking under stress
  • 1-1/2 in FNPT to 1 in MNPT adapts pipe sizes
  • NPT threads with 11 threads per inch seal reliably
  • ZORO SELECT brand backs consistent manufacturing quality

What this fitting does

The Value Brand 5P524 is a malleable iron hex bushing rated Class 150 for threaded pipe connections. It reduces a 1-1/2 inch female NPT opening to a 1 inch male NPT thread with 11 threads per inch on both ends. The hex profile allows standard wrench engagement for assembly in plumbing systems.

Who should use it and who should not

This bushing suits installers joining dissimilar NPT pipe sizes in water, air or inert gas lines where Class 150 pressure rating is specified. It is not intended for high-pressure hydraulic circuits, steam service above the class limit or applications requiring brass, stainless steel or plastic body materials. Buyers needing a straight coupling or a different thread standard should select another fitting.

Installation notes

Thread sealant or PTFE tape must be applied to the male threads before engagement to ensure a leak-free joint. Tighten using a wrench on the hex flats; over-torquing can crack the malleable iron casting or strip the tapered threads. The most common failure is insufficient sealant leading to weeping at the joint under pressure.

Highlights

  • Class 150 pressure rating handles standard plumbing loads
  • Malleable iron construction resists cracking under stress
  • 1-1/2 in FNPT to 1 in MNPT adapts pipe sizes
  • NPT threads with 11 threads per inch seal reliably
  • ZORO SELECT brand backs consistent manufacturing quality

Specifications

BrandZORO SELECT

Questions about this item

Does this bushing need any sealant on the 11 1/2 NPT threads to seal properly?

Apply PTFE tape or pipe-thread compound to the male threads before assembly; the 11 1/2 threads per inch on both ends create the mechanical seal when tightened.

Will this Class 150 malleable iron bushing handle the same pressure as the older steel fittings in my system?

Class 150 malleable iron is rated for the same 150 psi working pressure as standard Class 150 steel fittings, so it matches the pressure class of existing components.

How can I confirm the 1-1/2" female by 1" male reduction is seated correctly after installation?

Turn the water on and inspect both the 1-1/2" FNPT and 1" MNPT joints; no visible leakage means the hex bushing is properly engaged.

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