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Nibco 804 DWV adapter cast bronze 2 in C x MNPT fitting

Nibco, Inc.

Nibco, Inc. 804 2 DWV Adapter Cast Bronze 2 in C x MNPT 577 psi 20 to 400 Degrees F ASME B 16.23

SKU CH-ZAW2-FG8VG MPN 804

Cast bronze DWV adapter joins 2-inch copper tube to male pipe threads, rated to 577 psi at 200 degrees F and serviceable from 20 to 400 degrees F per ASME B 16.23

  • TypeDrain Components
  • MaterialHAWA
  • Cast bronze construction resists corrosion in drain systems
  • C x MNPT connection joins copper tube to male pipe threads
  • Rated 577 psi at 200 degrees F for high-pressure DWV service
  • Operates from -20 to 400 degrees F across temperature extremes
  • Meets ASME B16.23 standard for reliable fitting performance

DWV Adapter for 2 in Cast Bronze Systems

The Nibco 804 DWV adapter connects a 2 in copper tube to a 2 in male NPT thread in drain, waste and vent installations. Cast bronze construction handles temperatures from -20 to 400 degrees F and meets ASME B16.23 requirements. It is suited for residential and commercial plumbing projects that need a durable transition between tube and pipe threads.

Pressure Rating of 577 psi at 200 Degrees F

The adapter is rated for a maximum working pressure of 577 psi at 200 degrees F, which determines whether it meets the design pressure of the system. At higher temperatures the allowable pressure decreases, so engineers must verify the rating against actual service conditions. This single figure is the primary filter for specifying the fitting in a DWV layout.

Fits 2 in Copper Tube and 2 in Male NPT Threads

The C x MNPT connection joins 2 in copper tubing on one side and 2 in male pipe threads on the other, with an outside diameter of 2-1/8 in by 2 in. No solder joint or flange is included, so the installer must provide compatible copper tube and a female threaded companion fitting. The bronze body resists corrosion in typical DWV environments and frees the designer from specifying separate transition couplings.

Highlights

  • Cast bronze construction resists corrosion in drain systems
  • C x MNPT connection joins copper tube to male pipe threads
  • Rated 577 psi at 200 degrees F for high-pressure DWV service
  • Operates from -20 to 400 degrees F across temperature extremes
  • Meets ASME B16.23 standard for reliable fitting performance

Specifications

TypeDrain Components
MaterialHAWA
BrandNibco
Model804 2

Questions about this item

What does the 577 psi rating mean when this adapter is installed in a drainage system?

The 577 psi rating represents the maximum pressure at 200 degrees F. In a DWV system operating at atmospheric pressure, this provides a very high safety margin for venting and waste flow.

How does the C x MNPT connection work with the ASME B 16.23 standard?

The C x MNPT connection joins a 2 inch copper tube to a 2 inch male NPT thread. ASME B 16.23 governs the cast bronze fitting dimensions and pressure ratings for this connection type.

What clearance is needed to fit the 2-1/8 inch outside diameter into a 2 inch pipe run?

The 2-1/8 inch outside diameter fits over a 2 inch copper tube. You need enough space to slide the fitting onto the tube and apply solder for the sweat connection.

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