Charman Inc.

300# Extra Heavy Black Malleable Iron Union

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  • Charman 300# extra heavy black malleable iron threaded union on white background
  • Charman 300# extra heavy black malleable iron union specifications, sizes, features and applications
$18.02 - $55.11

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Description

300# Extra Heavy Black Malleable Iron Union

Charman Schedule 300 extra heavy black malleable iron unions provide a serviceable connection between compatible male-threaded piping components while allowing the piping connection to be separated without rotating the adjoining pipe.

Select the required nominal pipe size from the product options above. The selected variation determines the Charman item number, online selling price, net cost, and size-specific product information.

Product Highlights

  • Schedule 300 / 300# extra heavy fitting
  • Threaded union configuration
  • Black malleable iron construction
  • Female threaded connections
  • Three-piece union design provides a serviceable piping connection
  • Available in nominal sizes from 1/2" through 2"
  • Charman Manufacturing product family

Available Sizes & Packaging

Charman Part # Nominal Size
664513 1/2"
664514 3/4"
664515 1"
664516 1-1/4"
664517 1-1/2"
664518 2"

Technical Specifications

Material Malleable Iron
Finish Black
Product Series Schedule 300 / 300# Extra Heavy
Configuration Union
Connection Style Female × Female Threaded
Manufacturer Charman Inc.
Available Sizes 1/2" through 2"

Serviceable Threaded Connection

A threaded union connects two compatible male-threaded piping components while providing a convenient point for future disassembly. The union nut allows the connection to be separated without requiring the adjoining pipe to be rotated, making unions useful around equipment, valves, and other components that may require maintenance or replacement.

Common Applications

Industrial & Mechanical

  • Threaded piping systems
  • Equipment connections
  • Valve installations
  • Maintenance and repair work

Commercial Piping

  • Utility piping
  • Serviceable piping connections
  • Threaded pipe assemblies
  • Extra-heavy fitting applications

Manufacturer Resources

Review the Charman Manufacturing Schedule 300 Malleable Fittings catalog for manufacturer-listed part numbers, sizes, packaging quantities, and product illustrations.

View Charman Schedule 300 Catalog

Need Help Selecting a 300# Black Malleable Iron Union?

Our industrial PVF specialists can help confirm nominal pipe size, fitting configuration, threaded connection requirements, service conditions, and product availability.

Frequently Asked Questions

What is a malleable iron union used for?

A threaded union joins two compatible male-threaded piping components while providing a convenient point where the piping system can later be disconnected for maintenance, service, or component replacement.

How is a union different from a coupling?

A coupling creates a straight threaded connection between two components. A union also creates a straight connection but can be separated at the union nut without rotating the adjoining pipe.

What type of connections does this union have?

This union has female threaded connections on both ends for connection to compatible male-threaded piping components.

What sizes are available?

This Charman 300# extra heavy union family is available in nominal pipe sizes from 1/2" through 2".

What does 300# extra heavy mean?

Charman identifies this fitting family as Schedule 300 / extra heavy black malleable fittings. Confirm the required fitting class and service conditions for your piping system before installation.

How do I choose the correct variation?

Select the nominal pipe size that matches the threaded piping components being joined.

Important Ordering Notes

  • Select the required nominal pipe size before adding the product to your cart.
  • The selected variation determines the Charman part number, price, and net cost.
  • Verify fitting size and union configuration before ordering.
  • Confirm pressure, temperature, media compatibility, and applicable code requirements before installation.
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