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Galvanised malleable iron hex bushing with tapered threads

Value Brand

Value Brand 1-1/4" MNPT x 3/4" FNPT Galvanized Hex Bushing

SKU CH-FST9-ZNS5W

Galvanised malleable-iron hex bushing reduces 1-1/4" MNPT to 3/4" FNPT for Class 150 piping systems rated to 300 psi WOG

  • Galvanized malleable iron resists corrosion for long service life
  • Hex design allows secure tightening with standard wrenches
  • Reduces 1-1/4 in MNPT to 3/4 in FNPT for flexible pipe connections
  • Meets ASME B16.3, B16.4, ASTM A197, A47, FM, NSF-61, AB1953, UL standards
  • Rated 300 psi at 150 °F WOG and 150 psi saturated steam

Fitting Size & Connection

The galvanized hex bushing reduces a 1-1/4 inch male NPT thread down to a 3/4 inch female NPT thread. It suits plumbing repairs or new installations where a smaller branch line must connect to a larger main. The Class 150 rating covers typical residential and light-commercial water, air and saturated-steam services.

Thread & Pressure Compatibility

Verify that the existing pipe and mating fitting both use NPT threads and that the system pressure stays within the 300 psi WOG limit at 150 degrees F. Saturated steam lines must not exceed 150 psi. Confirm the pipe material is compatible with galvanized malleable iron to avoid galvanic corrosion.

Galvanized Malleable Iron Build

The bushing meets ASME B 16.3 and B 16.4, ASTM A-197 and A47 standards and carries FM, NSF-61, AB1953 and UL listings. The hex profile allows a wrench to apply proper torque without rounding the corners. The galvanized coating resists rust in potable-water and compressed-air systems, while the iron body withstands mechanical stress and vibration.

Highlights

  • Galvanized malleable iron resists corrosion for long service life
  • Hex design allows secure tightening with standard wrenches
  • Reduces 1-1/4 in MNPT to 3/4 in FNPT for flexible pipe connections
  • Meets ASME B16.3, B16.4, ASTM A197, A47, FM, NSF-61, AB1953, UL standards
  • Rated 300 psi at 150 °F WOG and 150 psi saturated steam

Specifications

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Questions about this item

Does the bushing come with thread sealant or do I need to buy it separately?

The fitting is sold alone; pipe thread sealant or tape must be purchased separately for a leak-free joint.

Which class rating should I select for a 300 psi water line?

This hex bushing is rated Class 150 and handles 300 psi water, oil or gas at 150 °F, so it matches that requirement.

What does the 300 psi @ 150 °F WOG rating mean for daily use?

It means the galvanized malleable iron bushing will safely contain water, oil or gas up to 300 psi at temperatures up to 150 °F in service.

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