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Bronze Class 150 companion flange, 1-1/2 inch sweat fitting, four bolt holes

Nibco, Inc.

Nibco, Inc. 771-LF Class 150 Companion Flange 1-1/2 In

SKU CH-85HT-9W6V1

Bronze Class 150 companion flange joins 1 1/2 in copper tube to a 5 in flanged connection rated 327 psi at 200 °F

  • Connects copper tube to flange for secure piping transitions
  • Bronze construction resists corrosion in air and non-potable water systems
  • Rated for 327 psi at 200 degrees F for reliable service
  • Class 150 design with four 5/8 inch bolt holes simplifies installation
  • Sweat cup connection fits 1 5/8 inch tube outer diameter

Application & media

This Class 150 companion flange connects 1 1/2 inch copper tubing to a flanged joint using a sweat fitting adapter. It is suited for air and non-potable water lines in plumbing and light-industrial systems. The bronze body handles a maximum operating pressure of 327 psi and a maximum temperature of 200 Degrees F. Four bolt holes on a 5 inch outside diameter simplify alignment during assembly.

Pre-installation checks

Verify that the existing pipe is 1 1/2 inch copper tube with a 1 5/8 inch outer diameter to match the cup connection. Confirm the system design pressure stays below 327 psi and the fluid temperature does not exceed 200 Degrees F. Ensure the mating flange uses the same four-hole pattern with 5/8 inch bolt holes and that a 7/16 inch flange thickness fits the available space. Check local codes for bronze fittings in the intended service.

Upgrade context

This flange replaces a plain sweat coupling when a removable, bolted connection is required for maintenance or equipment changes. The jump is worth it when future disassembly is likely or when joining to flanged valves, pumps or tanks. It does not serve potable water systems or applications that demand a higher pressure class or a different bolt pattern.

Highlights

  • Connects copper tube to flange for secure piping transitions
  • Bronze construction resists corrosion in air and non-potable water systems
  • Rated for 327 psi at 200 degrees F for reliable service
  • Class 150 design with four 5/8 inch bolt holes simplifies installation
  • Sweat cup connection fits 1 5/8 inch tube outer diameter

Specifications

BrandNIBCO

Questions about this item

Does the 771-LF Class 150 Companion Flange ship with bolts, gaskets or pipe included?

The flange is supplied as a single bronze fitting; mounting bolts, gasket material and copper pipe must be sourced separately.

When should I select the 1-1/2 inch sweat version instead of another size?

Choose this model when joining 1-1/2 inch copper tube (1 5/8 inch OD) to a flat-faced flange in a Class 150 system.

Will the 327 psi rating hold at the 200 °F limit in a hydronic heating loop?

Yes, the bronze body is rated for 327 psi at the full 200 °F operating temperature.

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