Asc Engineered Solutions 3.NU Pipe Union 3 in 150 Lb Galvanized

Product Description

The ASC Engineered Solutions 3.NU is a 3-inch malleable iron pipe union rated at 150 lb, finished with a galvanized coating for corrosion resistance. It features a brass-to-iron seat design that provides a reliable metal-to-metal seal, reducing the risk of leakage under pressure and thermal cycling. This union is domestically manufactured and intended for use in low-pressure piping systems carrying water, steam, or gas. Licensed plumbers and pipefitters install this fitting when a removable, leak-tight joint is needed between two sections of threaded pipe.

This union is suited for residential and light commercial plumbing, hydronic heating, and steam distribution applications where a 3-inch threaded connection is required. The galvanized finish makes it appropriate for above-ground or moderately corrosive environments. It is typically installed in mechanical rooms, boiler rooms, and utility piping runs where future serviceability of the joint is a priority.

Key Features

• 3-inch nominal pipe size for high-flow plumbing and heating applications
• 150 lb pressure rating suitable for low-pressure steam and water service
• Brass x iron seat construction delivers a durable, metal-to-metal sealing surface
• Malleable iron body resists impact and stress in demanding piping environments
• Galvanized finish provides corrosion protection for extended service life
• Domestic manufacture supports compliance with Buy American and similar procurement requirements

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard 3-inch NPT threaded pipe systems in plumbing, hydronic heating, and steam piping applications rated at 150 lb.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Plumbing Code. Depressurize and drain the system completely before removing or installing any union fitting. Apply an appropriate pipe thread sealant or PTFE tape to all male NPT threads before assembly. Do not overtighten the union nut, as excessive force can damage the seat surface and compromise the seal.

Technical Specifications

• Nominal Pipe Size: 3 inches
• Pressure Rating: 150 lb
• Seat Material: Brass x Iron
• Body Material: Malleable Iron
• Finish: Galvanized
• Connection Type: NPT Threaded
• Origin: Domestic

Standard Information

• Brand: ASC Engineered Solutions
• Manufacturer Part Number: 3.NU