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Copper reducing adapter with cup and threaded ends

Nibco, Inc.

Nibco, Inc. U604 1/2x3/4 Copper Reducing Adapter trap

SKU CH-DYGX-NP39V MPN U604

Copper reducing adapter joins 1/2 in. tube to 3/4 in. MNPT, rated to 722 psi at 100 °F and 400 °F maximum temperature

  • Product typeDrain Components
  • Main materialHAWA
  • Wrot copper construction resists corrosion in potable water systems
  • Reducing adapter joins 1/2 in tube to 3/4 in MNPT thread
  • Sweat fitting design creates permanent leak-free joints
  • Rated for 722 psi at 100 Degrees F operating pressure
  • Withstands temperatures up to 400 Degrees F for hot water lines

Reducing copper adapter for 1/2" tube to 3/4" MNPT

This wrot-copper reducing adapter joins a 1/2 in copper tube to a 3/4 in male NPT thread using a sweat connection on the tube side. It is rated for air, gases and potable water systems. The fitting handles up to 722 psi at 100 Degrees F and temperatures up to 400 Degrees F.

Installers needing a direct sweat-to-thread

Suits plumbers and HVAC technicians who must reduce from 1/2 in copper tube to a 3/4 in male pipe thread in a single fitting. Not for jobs that require a female-threaded outlet, a straight coupling without reduction, or a press-connect or push-fit joint method.

Maximum operating pressure 722 psi at 100 Degrees F

This pressure rating at the stated temperature is the key figure for deciding whether the adapter meets the design limits of the piping system. Verify that the system pressure and temperature stay within this bound before specifying the part.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 95% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameNibco
Model nameU604 1/2 × 3/4
Product typeDrain Components
Size & build
Main materialHAWA

Questions about this item

What pressure does the 722 psi rating cap in practice?

The adapter is rated for 722 psi at 100 °F, so the pressure cap applies at that temperature; higher temperatures lower the allowable pressure.

What copper tube and pipe sizes must the mating pipes match?

Side A requires a 1/2 in copper tube (5/8 in OD) for a sweat joint; Side B requires a 3/4 in male NPT thread.

How is the sweat end installed, and what step is often missed?

Clean the tube and fitting, apply flux, slide the cup onto the tube, then heat evenly and feed solder until the joint is full; skipping thorough cleaning or flux causes leaks.

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