3/4 inch Black Iron 45 Degree Elbow Female x Female

3/4" Black Iron 45° Elbow – Threaded Directional Fitting for Gas and Fluid Systems

The 3/4" Black Iron 45° Elbow is a malleable iron fitting used to change pipe direction by 45 degrees in low- to medium-pressure piping systems. With female National Pipe Taper (NPT) threads on both ends, this elbow offers a strong mechanical connection point for natural gas, air, oil, and water lines in commercial and residential infrastructure.

Manufactured to meet ANSI/ASME B16.3 specifications, this elbow is pressure-rated and cast to ensure dimensional accuracy and system performance. The 45° bend is ideal for routing systems around obstacles or for changes in direction where a more gradual angle is needed to preserve flow efficiency and reduce hydraulic losses.

Key Performance Attributes

• ✅ Standard-Conforming Threads Female NPT threading ensures leak-resistant joints with compatible black or galvanized pipe.
• ✅ Cast Malleable Iron Construction Provides excellent impact resistance and tensile strength in structural and fluid systems.
• ✅ Black Finish Suited for non-corrosive environments such as indoor gas line installations or mechanical rooms.

Product Specifications

• Nominal Size: 3/4 inch
• Material: Malleable Black Iron (ASTM A197)
• Thread Type: NPT – Female x Female
• Bend Angle: 45 degrees
• Standards: ASME B16.3, B1.20.1

Installation Considerations

For optimal sealing, use PTFE thread tape or a listed thread compound. Torque should be applied with a pipe wrench per manufacturer recommendations to avoid over-tightening and damaging threads. Always perform pressure testing post-installation per code before putting the system into operation.

Application Scope

Primarily used in black iron gas distribution systems, compressed air piping, and hydronic systems where a 45-degree directional change is required. Suitable for both horizontal and vertical pipe routing where gradual deflection reduces stress and minimizes turbulence.

Material Insight

Black iron is selected for its strength and temperature tolerance in low- to moderate-pressure systems. Its uncoated surface makes it ideal for indoor use in non-corrosive applications. For outdoor or wet environments, a galvanized equivalent should be used.

The 3/4" Black Iron 45° Elbow provides contractors with a durable and standardized solution for directional transitions in threaded steel pipe systems. Designed to support long service life and compliant installations, it is a reliable component in mechanical and utility infrastructure.