Nibco h-78004 Air Separator 1 in Copper Press

Product Description

The NIBCO h-78004 is a 1-inch copper press brass air separator designed for hydronic heating and cooling systems. Air separators remove entrained air from circulating fluid, reducing noise, improving pump efficiency, and protecting system components from air-related corrosion. The h-78004 uses a copper press connection style, eliminating the need for open-flame soldering at the connection points. Constructed with a brass body, this separator suits residential and light commercial closed-loop hydronic applications. Licensed plumbers and HVAC technicians install this component as part of new system builds or retrofit projects.

The h-78004 is suited for closed-loop hydronic systems including radiant floor heating, baseboard convector loops, and fan coil circuits. The 1-inch copper press end connections are compatible with standard press-fit tooling commonly used in residential and commercial mechanical rooms. Air separation is typically positioned on the supply side near the boiler or heat source, where fluid temperature is highest and dissolved air release is most likely to occur.

Key Features

• 1-inch copper press end connections for tool-based, flame-free installation
• Brass body construction for durability in hydronic fluid environments
• Removes entrained and dissolved air from circulating loop fluid
• Reduces pump cavitation risk and system noise caused by air pockets
• Compact inline design suited for tight mechanical room installations

Compatibility

Designed as an OEM-style replacement or new-installation component for 1-inch copper press hydronic piping systems in residential and light commercial heating and cooling applications.

Installation Notes

Installation should be performed by a licensed plumber or mechanical contractor following applicable IPC and local mechanical code requirements. Depressurize and drain the affected loop section before installation, and verify the press tool and jaw size are rated for the connection diameter and fitting series. Copper press fittings require a calibrated press tool with the correct jaw profile to achieve a proper seal. Do not use heat or solder on the press connections.

Technical Specifications

• Connection Size: 1 inch
• Connection Type: Copper Press
• Body Material: Brass

Standard Information

• Brand: NIBCO
• Manufacturer Part Number: h-78004