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Malleable iron reducer coupling, 1 1/2 by 1 inch FNPT, dark grey finish

Value Brand

Value Brand 5P573 Malleable Iron Reducer Class 150

SKU CH-TRRW-2F5MV

Malleable iron reducer coupling connects 1 1/2 inch to 1 inch FNPT pipes, rated Class 150 for 300 psi at 150 °F and 150 psi saturated steam, meeting ASME B 16.3, B 16.4.

  • Malleable iron construction handles 300 psi at 150 °F
  • Class 150 rating meets ASME B 16.3 and B 16.4 standards
  • FM Approved and UL Listed for code-compliant installations
  • Operating range from −20 °F to 366 °F suits steam and water lines
  • FNPT threads connect 1 1/2 in to 1 in pipe without adapters

Reducer Coupling for Pipe Systems

This malleable iron reducer coupling joins 1 1/2 in FNPT to 1 in FNPT pipe ends in plumbing installations. It meets ASME B16.3 and B16.4 dimensional standards and carries FM Approved and UL Listed certifications for code compliance. The fitting suits residential, commercial and light industrial piping networks requiring a secure transition between different pipe diameters.

Class 150 Rating and Threaded Installation

Rated for Class 150 service, the coupling handles up to 300 psi at 150 degrees F and 150 psi saturated steam pressure. Female NPT threads on both ends allow direct assembly onto matching male-threaded pipe or nipples without welding or flanges. This frees up installation time and eliminates the need for specialised joining equipment on site.

Temperature Range and Material Limits

The ASTM A197 and A47 malleable iron body operates continuously from -20 degrees to 366 degrees F, maintaining strength under sustained thermal cycling. Under prolonged steam or hot water loads the material resists creep and deformation within the stated pressure envelope. It is not suited for services exceeding the 366 degree F limit or pressures above the Class 150 rating.

Highlights

  • Malleable iron construction handles 300 psi at 150 °F
  • Class 150 rating meets ASME B 16.3 and B 16.4 standards
  • FM Approved and UL Listed for code-compliant installations
  • Operating range from −20 °F to 366 °F suits steam and water lines
  • FNPT threads connect 1 1/2 in to 1 in pipe without adapters

Specifications

BrandZORO SELECT

Questions about this item

What is the maximum pressure this Class 150 reducer handles at 150 °F?

The fitting is rated for 300 psi at 150 °F, with a saturated steam limit of 150 psi.

How much heat can the malleable iron body withstand during continuous operation?

The temperature range runs from -20 °F up to 366 °F, so extended high-temperature service stays within the material limits.

Which pipe threads must the existing system use to connect this reducer?

Both ends are FNPT, so the mating pipes need matching male NPT threads in 1 1/2 in and 1 in sizes.

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