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Red brass reducing coupling with threaded ends

Value Brand

Value Brand 1" x 1/2" FNPT Red Brass Reducing Coupling

SKU CH-0WWK-C3K29

Red brass reducing coupling joins 1 in and 1/2 in FNPT threads, rated 125 psi from -20 to 400 °F

  • Reduces pipe size from 1 in to 1/2 in with FNPT threads
  • Red brass construction meets ASTM B584 for corrosion resistance
  • Rated to 125 psi per ASME B16.15 Class 125 standard
  • Operates from -20 °F to 400 °F across heating and cooling systems
  • NSF-61-4 certified via IAPMO for potable water contact

Red Brass Reducing Coupling

This red brass reducing coupling joins a 1 inch FNPT pipe to a 1/2 inch FNPT pipe in plumbing systems. It is manufactured to Class 125 specifications for standard water and gas distribution. The fitting meets ANSI B 1.20.1 thread standards and ASME B 16.15 dimensional requirements. It carries NSF-61-4 certification via IAPMO for potable water contact.

125 psi pressure rating and wide temperature range

The coupling withstands a maximum pressure of 125 psi across a temperature range of -20 to 400 degrees Fahrenheit. This headroom covers typical residential hot water, heating and compressed air lines. It runs out of margin in high-pressure industrial processes or steam systems exceeding the rated limit. The ASTM B584 alloy composition supports the stated pressure and temperature envelope.

Red brass construction with FNPT threads

The red brass body resists dezincification and corrosion better than standard yellow brass in aggressive water conditions. Female National Pipe Taper threads on both ends create a sealed joint when assembled with compatible male fittings and sealant. The reducing design allows a direct step-down without a separate bushing. Installers must verify thread engagement and system pressure stay within the 125 psi Class 125 limit.

Highlights

  • Reduces pipe size from 1 in to 1/2 in with FNPT threads
  • Red brass construction meets ASTM B584 for corrosion resistance
  • Rated to 125 psi per ASME B16.15 Class 125 standard
  • Operates from -20 °F to 400 °F across heating and cooling systems
  • NSF-61-4 certified via IAPMO for potable water contact

Specifications

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Questions about this item

Will this 1" x 1/2" FNPT reducing coupling thread onto my existing Schedule 40 brass nipples without leaking?

The coupling uses FNPT threads to ANSI B1.20.1 so it mates with standard NPT male threads on Schedule 40 brass nipples; apply PTFE tape or pipe dope for a seal rated to 125 psi.

How can I verify the fitting meets potable-water standards once it is installed?

The body carries ANSI NSF-61-4 certification through IAPMO confirming compliance for drinking-water contact; look for the NSF mark on the casting.

Does the box include thread sealant or do I need to buy PTFE tape separately?

Only the red brass reducing coupling is supplied; thread sealant such as PTFE tape or pipe dope must be purchased separately.

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