3/4 inch Bronze 90 Degree Radiator Elbow Hot Water Male x Copper

3/4 inch Bronze 90° Radiator Elbow – FNPT x Solder Connection

The 3/4 inch bronze radiator elbow is a 90-degree fitting designed for use in hot water heating systems, allowing for directional change in copper piping installations. It features a female NPT inlet and a solder cup outlet, providing a secure transition from threaded to soldered connections within hydronic loop configurations.

Manufactured from cast bronze in compliance with ANSI and ASME B16.15 standards, this elbow is rated for continuous hot water service. Its corrosion resistance and thermal stability make it suitable for closed-loop heating and other high-temperature plumbing applications.

Technical Specifications

• Nominal Size: 3/4 inch
• Connection Type: FNPT (female national pipe thread) x C (sweat/solder cup)
• Material: Cast bronze (ASTM B584)
• Pressure Rating: Up to 300 PSI non-shock for water, oil, or air (WOG)
• Temperature Rating: Up to 250°F (standard hydronic applications)
• Compliance: ASME B16.15; ANSI/NSF 61 (lead-free variants only)

Common Applications

This elbow fitting is typically used in:

• • Hot water radiator loop installations
• • Copper branch line transitions in mechanical rooms
• • Wall-mounted radiator and baseboard heater connections
• • Residential and light commercial hydronic piping systems

Installation Guidelines

Soldered connections should be prepared using standard flux and lead-free solder suitable for potable or heating systems. Threads should be sealed with PTFE tape or an approved pipe joint compound rated for high-temperature use. Proper support and thermal expansion allowances should be considered in accordance with local mechanical code.

Material Performance Note

Bronze is a preferred alloy for hot water systems due to its resistance to dezincification, stress cracking, and high thermal conductivity. It provides long-term reliability in fluctuating temperature and pressure environments common to hydronic applications.