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Small copper cap fitting with smooth cup end

Nibco, Inc.

Nibco, Inc. 617 3/8 in Cap Wrot Copper Cup

SKU CH-23YD-J3071

Caps 3/8 in copper tube for air or potable water, rated 623 psi at 200 °F and certified to ASME B16.22, ASTM B75, NSF/ANSI 61 and 372

  • Suitable for potable water systems with NSF/ANSI 61 and 372 certification
  • Handles up to 623 psi at 200 °F per ASME B 16.22
  • Operates from 20 °F to 400 °F for wide temperature range
  • Dezincification-resistant C12200 copper ensures long service life
  • Cup connection fits 3/8 in copper tube with 1/2 in outer diameter

3/8 in Wrot Copper Cap

This Nibco wrot copper cap is a pressure-rated fitting for sealing copper tube ends. It suits potable-water and air lines in residential and commercial plumbing. The cup connection sweats onto 3/8 in CTS tube with a 1/2 in outer diameter. The fitting meets ASME B16.22, ASTM B75, MSS SP-104, NFPA 99, NSF/ANSI 61 and NSF/ANSI 372 standards.

Installers needing a permanent end stop

The cap serves plumbers closing a 3/8 in copper branch during rough-in or remodel work. It is not suited for threaded connections, compression joints or larger tube sizes. Builders requiring a fitting for steel, plastic or drain-waste-vent systems should select a different product. The maximum operating pressure is 623 psi at 200 degrees F.

623 psi at 200 degrees F rating

This single pressure-temperature limit defines whether the cap matches the system design. The C12200 wrot copper body resists dezincification and complies with UL 207 for safety. The minimum operating temperature is 20 degrees F. Verify the system pressure and temperature against these limits before specifying the fitting.

Highlights

  • Suitable for potable water systems with NSF/ANSI 61 and 372 certification
  • Handles up to 623 psi at 200 °F per ASME B 16.22
  • Operates from 20 °F to 400 °F for wide temperature range
  • Dezincification-resistant C12200 copper ensures long service life
  • Cup connection fits 3/8 in copper tube with 1/2 in outer diameter

Specifications

BrandNibco

Questions about this item

How do I solder the 3/8 in cup fitting onto 1/2 in OD copper tube, and what step causes leaks?

Clean both surfaces, apply flux, heat the cup evenly until solder flows into the joint by capillary action; the common error is heating the tube instead of the cup, which leaves the joint unfilled.

Will the C12200 wrot copper cap need replacement due to corrosion or dezincification in potable water?

The cap is dezincification-resistant and meets NSF/ANSI 61 and NSF/ANSI 372 for potable water, so no scheduled replacement for corrosion is required under normal conditions.

At what temperature does the 623 psi pressure rating become the limiting factor during sustained hot-water use?

The 623 psi maximum operating pressure is rated at 200 Degrees F; above that temperature the allowable pressure drops, making pressure the first limit reached under sustained high-temperature operation.

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