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Straight copper coupling with two cup ends, shiny metallic finish

Nibco, Inc.

Nibco, Inc. 600DS 3 1/2 in Straight Copper Coupling

SKU CH-2RAF-TNY0S

A straight copper coupling joins two 3 1/2 in tubes for air, gases or potable water up to 243 psi at 200 degrees F

  • Product colorTransparent
  • Product typePipes, Valves & Fittings
  • Straight coupling joins 3 1/2 in copper tubes
  • Wrot copper resists corrosion in potable water systems
  • Rated 243 psi at 200 Degrees F for high-pressure lines
  • Withstands 400 Degrees F for hot-water distribution
  • Sweat cup ends create leak-free soldered joints

Copper coupling for 3 1/2 in tube

This straight sweat fitting joins two lengths of 3 1/2 in copper tube in potable water, air or gas lines. It is made from wrot copper and sized for a 3 5/8 in outer diameter on each end. The fitting suits new installations or repairs where a permanent soldered joint is required.

Pressure and temperature limits

The coupling is rated for a maximum operating pressure of 243 psi at 200 degrees F and a maximum operating temperature of 400 degrees F. These ratings define the safe envelope for the soldered joint in hot water or steam service. Exceeding either value risks joint failure and leaks.

Capacity and headroom

The fitting handles standard residential and light commercial flow rates for 3 1/2 in copper tube without restriction. It runs out of headroom when system pressure approaches the 243 psi limit or when fluid temperatures exceed 400 degrees F. Builders needing larger tube sizes or higher pressure ratings must select a different fitting.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $48.99
Pricier than about 55% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameNIBCO
Product colorTransparent
Product typePipes, Valves & Fittings

Questions about this item

Which size of the Nibco 600DS straight coupling should I select for my pipework?

The fitting is a 3 1/2 inch copper tube size on both ends, so choose this version when joining two pipes of that diameter.

What does the 243 psi rating mean when the coupling is installed in a hot water system?

It indicates the maximum operating pressure at 200 degrees Fahrenheit; at higher temperatures the allowable pressure decreases.

How does the sweat connection type affect the pressure limit in daily use?

The sweat joint relies on soldered copper cups, and the 243 psi at 200 degrees Fahrenheit rating caps the working pressure for that joint style.

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