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Copper end cap fitting, smooth cylindrical form, 1-1/2 inch nominal size

Nibco, Inc.

Nibco, Inc. C617 1-1/2 in Copper Cap trap

SKU CH-3XB2-Q92QT MPN C617

A wrot copper cap fitting for 1-1/2 inch tube, rated to 408 psi at 100 degrees F and temperatures from -20 to 400 degrees F, meeting ASME/ANSI B 16.22

  • Product typeDrain Components
  • Copper construction resists corrosion for long service life
  • 1-1/2 in nominal size fits standard drain piping
  • Rated to 408 psi at 100 Degrees F for high-pressure reliability
  • Withstands -20 to 400 Degrees F across wide temperature range
  • Meets ASME/ANSI B 16.22 standard for quality assurance

Copper Cap for 1-1/2 Inch Tubing

The Nibco C617 is a wrought copper tube fitting designed to close a 1-1/2 inch nominal line. It suits plumbers and maintenance crews who need a permanent or serviceable end cap on copper piping systems. The cap meets ASME/ANSI B 16.22 standards for material and dimensions. It is not for installers who require a threaded or flanged closure method.

Pressure Rating and Temperature Range

The fitting withstands a maximum pressure of 408 psi at 100 degrees Fahrenheit. Its operating temperature range spans from -20 degrees to 400 degrees Fahrenheit. These limits support typical hydronic heating and cooling circuits. The cap is not for systems that exceed these pressure or temperature boundaries.

Wrought Copper Construction and Solder Joint

The wrought copper body provides corrosion resistance and compatibility with copper tube. The C-type connection is made by soldering to a tube with a 1-5/8 inch outside diameter. This creates a leak-tight seal without mechanical fasteners. The cap is not for users who need a compression or push-fit installation.

How it compares

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

Price $4.99
Cheaper than about 93% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameNibco
Model nameC617 11/2
Product typeDrain Components

Questions about this item

How is the 1-1/2 in copper cap installed and what step do people miss?

Clean the tube end to 1-5/8 in outside diameter, apply flux, slide the cap on, and heat evenly until solder flows — the step most skip is removing all oxidation before heating.

What maintenance or replacement will this cap need later?

The wrot copper cap itself requires no scheduled maintenance; only inspect the soldered joint if system pressure approaches 408 psi at 100 Degrees F.

What limit appears first under sustained use at high temperature?

The 400 Degrees F upper temperature rating is the first limit reached before the 408 psi pressure rating becomes critical.

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