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Bronze 90-degree sweat elbow with cup and MNPT ends

Nibco, Inc.

Nibco, Inc. 707-4-6-LF 1 in Bronze Sweat Elbow Cup MNPT

SKU CH-PQNB-PH4XG

Bronze sweat elbow with cup and MNPT ends for potable water at 385 psi and 200 degrees F

  • ColorTransparent
  • TypePipes, Valves & Fittings
  • Lead-free bronze meets NSF/ANSI 61 for safe potable water
  • 90-degree elbow redirects flow between 1 in copper and 1 in MNPT
  • Rated to 385 psi and 200 °F for reliable high-pressure service
  • Certified to ASME B16.18, NSF/ANSI 372 and ISO 9001
  • Sweat cup connection enables quick solder installation on copper tubing

1-Inch Bronze Sweat Elbow

This 1-inch bronze sweat elbow joins copper tubing to a male NPT thread in potable-water systems. The 90-degree bend redirects flow in tight spaces while meeting ASME B16.18, NSF/ANSI 61 and NSF/ANSI 372 requirements. It is rated for 385 psi at 200 degrees Fahrenheit.

Installation and common issues

The cup end accepts 1-inch copper tube with a 1-1/8-inch outer diameter and is joined by sweating with lead-free solder. The opposite end carries 1-inch male NPT threads for a threaded adapter or valve. Overheating the joint or using flux not approved for potable water can cause leaks or certification loss.

Capacity and headroom

The fitting handles typical residential and light-commercial hot and cold water pressure up to its 385 psi limit and temperatures up to 200 degrees Fahrenheit. Systems that exceed either rating or that require a different thread standard will need an alternative fitting.

Highlights

  • Lead-free bronze meets NSF/ANSI 61 for safe potable water
  • 90-degree elbow redirects flow between 1 in copper and 1 in MNPT
  • Rated to 385 psi and 200 °F for reliable high-pressure service
  • Certified to ASME B16.18, NSF/ANSI 372 and ISO 9001
  • Sweat cup connection enables quick solder installation on copper tubing

Specifications

BrandNIBCO
ColorTransparent
TypePipes, Valves & Fittings

Questions about this item

How can I verify the elbow is leak-free after sweating the 1-inch copper joint and threading the 1-inch MNPT side?

Pressurise the line up to the 385 psi rating and inspect both the sweat cup and the male NPT threads for seepage; the joint should hold pressure at up to 200 °F without dripping.

What components come with the 707-4-6-LF elbow and what must I supply separately?

The box contains only the bronze 90-degree elbow; you must provide 1-inch copper tube, flux, solder, and thread sealant or tape for the MNPT connection.

Which fitting should I choose if my system requires compliance with NSF/ANSI 61 and NSF/ANSI 372 for potable water?

This 707-4-6-LF model meets both NSF/ANSI 61 and NSF/ANSI 372, so it satisfies lead-free and potable-water standards for the 1-inch sweat-by-MNPT configuration.

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