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Black cast iron reducing coupling, 2 by 1/2 inch NPT threads, eccentric form

Anvil

Anvil 0300155207 Reducing Coupling Trap 2 x 1/2 In NPT Black Cast Iron

SKU CH-QTY6-NBPM8 MPN 0300155207

Connects 2-inch and 1/2-inch NPT pipes with a Class 125 black cast iron reducing coupling rated 175 PSI at -20 to 150 °F

  • TypeDrain Components
  • Reduces pipe size from 2 to 1/2 inch NPT for versatile connections
  • Eccentric design maintains flow alignment and prevents air pockets in drainage systems
  • Class 125 cast iron withstands 175 PSI at temperatures up to 150 degrees F
  • UL listed and FM approved to ASME B16.4 for code-compliant installations
  • Certified for potable water use in California and Vermont meeting strict health standards

Reducing Coupling for 2 x 1/2 In NPT

This black cast iron reducing coupling connects a two-inch pipe to a half-inch pipe using NPT threads. It is built for plumbing professionals and facility managers who need a durable transition between different pipe diameters in commercial or industrial systems. The eccentric design helps maintain flow alignment and reduces air pockets in horizontal runs.

Fits standard NPT threads and Class 125 piping

The coupling threads directly onto matching NPT pipe ends without special tools or adapters. Its black cast iron construction handles water, oil or gas at up to 175 PSI between minus 20 and 150 degrees Fahrenheit. UL and FM approvals plus ASME B16.4 compliance mean it meets code for potable water use in California and Vermont, freeing installers from sourcing separate certified fittings.

Replaces mismatched bushings or improvised reducers

When a system demands a direct step from two inches to half an inch, this single fitting eliminates the need for multiple bushings and extra joints. The jump is worth it on new installations or retrofit jobs where leak paths must be minimised and inspection approval is required. It is not suited for non-threaded pipe systems or pressures beyond the rated limit.

Highlights

  • Reduces pipe size from 2 to 1/2 inch NPT for versatile connections
  • Eccentric design maintains flow alignment and prevents air pockets in drainage systems
  • Class 125 cast iron withstands 175 PSI at temperatures up to 150 degrees F
  • UL listed and FM approved to ASME B16.4 for code-compliant installations
  • Certified for potable water use in California and Vermont meeting strict health standards

Specifications

TypeDrain Components
BrandAnvil
Model0300155207

Questions about this item

What is the maximum continuous pressure the 2 x 1/2 In NPT cast iron coupling can handle at its rated temperature ceiling?

The fitting is rated for 175 PSI working pressure at up to 150 Deg F, per its Class 125 WOG specification.

How hot does the black cast iron body get when conveying fluid at the upper end of its rated range?

The material is approved for continuous service up to 150 Deg F; surface temperature will track the fluid temperature within that limit.

Which pipe threads must already be present on the system for this reducing coupling to thread on directly?

It requires a male 2 In NPT thread on one side and a male 1/2 In NPT thread on the other for the tapered female threads to seal.

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