3/4 inch Black Iron 90 Degree Elbow Female x Female

3/4" Black Iron 90 Degree Elbow – Threaded Fitting for Directional Transitions

The 3/4" Black Iron 90 Degree Elbow is a threaded pipe fitting designed for making precise 90-degree directional changes in threaded piping systems. Fabricated from durable malleable iron and finished with a corrosion-resistant black coating, this fitting is suitable for low- to medium-pressure applications involving water, steam, or gas distribution lines.

Its female national pipe thread (FNPT) ends ensure compatibility with standard schedule 40 and schedule 80 pipe systems, making it a practical choice for HVAC, hydronic, and fuel gas piping layouts that require right-angle transitions with reliable mechanical strength.

Field-Applicable Advantages

• ✅ Threaded FNPT x FNPT Connection – Facilitates easy assembly and disassembly in rigid piping systems.
• ✅ Pressure-Grade Construction – Manufactured from ASTM-compliant black malleable iron for structural stability and temperature tolerance.
• ✅ Corrosion Resistance – Black oxide finish helps protect threads and body from surface degradation in dry or low-humidity environments.

Performance and Specifications

• Size: 3/4" nominal
• Material: Black malleable iron (typically ASTM A197 or equivalent)
• Connection: FNPT x FNPT (conforming to ASME B1.20.1 standards)
• Usage Rating: Suitable for non-potable water, gas, and steam systems; verify for use in fire protection systems per local code

Installation Guidance

Apply thread sealant or PTFE tape to all male threads before tightening. Proper torque is essential to ensure sealing without cracking or thread damage. Avoid overtightening and support piping to prevent mechanical stress on the fitting.

Application Scope

Commonly installed in gas distribution lines, hydronic heating loops, compressed air systems, and steam branch connections. Suitable for horizontal or vertical configurations and often used in mechanical rooms, ceiling runs, or wall cavities in commercial and industrial environments.

Material Consideration

Black iron is not recommended for potable water applications. For such use, galvanized or copper alternatives should be specified. This elbow is designed for dry system compatibility and should not be installed in corrosive or wet system zones unless otherwise protected.

System Reliability Through Quality Components

The 3/4" Black Iron 90 Degree Elbow supports code-aligned installations where mechanical strength and fitting precision are essential. Designed to meet the performance needs of professional plumbing and mechanical trades, it plays a critical role in system layout and pressure containment where directional control is required.