Penn Machine 5001301701 Socket Weld Union 3 in 3000 Lb

Product Description

The PENN MACHINE 5001301701 is a 3-inch socket weld union rated for 3000 lb service, manufactured from forged carbon steel to ASTM A105 material standards. Built under Series 13017 by Pennsylvania Machine Works, this union is designed for high-pressure piping systems where a removable, pressure-tight connection between two pipe sections is required. The forged construction and Schedule 80/XH rating make it suitable for demanding industrial and process piping applications. At 4.313 inches in length with a 4.305-inch OD, it is a compact, heavy-duty fitting installed by licensed pipefitters and industrial plumbing contractors.

This union is intended for high-pressure carbon steel piping systems in industrial facilities, refineries, petrochemical plants, and power generation environments where socket weld fittings are specified. The 3000 lb pressure class and SCH 80/XH schedule rating make it appropriate for lines carrying steam, gas, or liquid media under elevated pressure and temperature conditions. It is typically installed in sections of piping that require periodic disassembly for maintenance or equipment servicing.

Key Features

• 3-inch nominal size socket weld end style for direct pipe socket insertion and fillet weld seal
• 3000 lb pressure class with Schedule 80/XH wall compatibility
• Forged carbon steel construction per ASTM A105 for high-strength, high-pressure service
• Meets MSS-SP83 dimensional and performance standards
• PED Certified and Canadian Registered in all provinces for broad project compliance
• Series 13017 product line from Pennsylvania Machine Works

Compatibility

Designed for use in 3-inch Schedule 80/XH carbon steel piping systems requiring 3000 lb class socket weld unions per MSS-SP83 specifications.

Installation Notes

Installation of socket weld unions should be performed by a qualified pipefitter or certified welder in accordance with applicable piping codes, including ASME B31.1 or B31.3 as required by the system design. The pipe end must be fully inserted into the socket and then backed out slightly before fillet welding to allow for thermal expansion during the weld cycle. Always depressurize and isolate the line completely before breaking any union connection or performing weld work. Verify that the union nut is properly engaged and the seat faces are clean and undamaged before returning the system to service.

Technical Specifications

• Nominal Size: 3 inches
• End Style: Socket Weld
• Pressure Class: 3000 lb
• Schedule Rating: SCH 80/XH
• Outside Diameter (OD): 4.305 inches
• Length: 4.313 inches
• Material: Carbon Steel
• Method of Manufacture: Forged
• Weight: 12.527 pounds
• Series: 13017
• Standards and Approvals: ASTM A105, MSS-SP83, PED Certified, Canadian Registered in all provinces
• Manufacturer: Pennsylvania Machine Works

Standard Information

• Brand: PENN MACHINE
• Manufacturer Part Number: 5001301701