Asc Engineered Solutions 312822505 Black Iron Union 4 Inch

Product Description

The ASC Engineered Solutions 312822505 is a 4-inch black iron ground joint union rated for 250 PSI service. Ground joint unions use a machined seat at the mating faces to create a metal-to-metal seal, eliminating the need for a separate gasket. This union is used to connect and disconnect threaded iron pipe runs without disturbing the surrounding piping. It is installed by licensed plumbers and pipefitters working on steam, gas, and hydronic systems where a reliable, reusable mechanical joint is required. The black iron construction and 250 PSI rating make it suitable for higher-pressure pipe system applications.

This union is a standard fitting for black iron pipe systems in commercial and industrial piping installations. Typical applications include steam distribution, gas supply piping, and hydronic heating systems where sections of pipe must be periodically removed for service or replacement. The ground joint design provides a durable, repeatable seal that holds up under thermal cycling. It is domestically manufactured and sized at 4 inches for use in larger-diameter pipe runs.

Key Features

• 4-inch fitting size for larger-diameter threaded iron pipe systems
• Ground joint connection provides a metal-to-metal seal without a separate gasket
• 250 PSI pressure rating suitable for steam, gas, and hydronic service
• Black iron construction with black coating for corrosion resistance in dry pipe environments
• Domestically manufactured fitting

Compatibility

Designed as an OEM-style replacement fitting for 4-inch threaded black iron pipe systems using ground joint union connections.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and IFGC or IPC requirements depending on the service. Shut off and depressurize the pipe system completely before disassembling or installing any union. Use appropriate pipe thread sealant rated for the intended service medium. Do not overtighten the union nut, as damage to the ground joint seat will compromise the metal-to-metal seal.

Technical Specifications

• Fitting Size: 4 inches
• Pressure Rating: 250 PSI
• Connection Type: Ground Joint
• Fitting Material: Iron
• Coating: Black
• Weight: 17.50 pounds
• Country of Origin: Domestic

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 312822505