1-1/4 inch Black Iron 90 Degree Street Elbow Female x Male

BLK MAL ST90ELL 1-1/4” 90° Elbow – Durable Fitting for High-Pressure Piping Systems

The BLK MAL ST90ELL 1-1/4” elbow is a malleable iron pipe fitting designed for creating 90-degree directional changes in threaded pipe runs. Engineered for industrial-grade reliability, it provides dependable service in both commercial and residential piping applications where strength, alignment, and corrosion resistance are key requirements.

Performance Features

• ✅ High-Strength Malleable Iron – Heat-treated to increase ductility while maintaining structural integrity under pressure.
• ✅ Threaded Ends (FPT) – Conforms to ANSI/ASME B1.20.1 for NPT threads, enabling leak-resistant joints with standard pipe.
• ✅ Black Finish – Ideal for non-corrosive, low-moisture environments such as gas and air lines.
• ✅ Working Pressure Rated – Suitable for systems up to 150 PSI (dependent on temperature and pipe material).
• ✅ Cast to Exact Tolerances – Ensures consistent alignment and facilitates precise layout in piping configurations.

Material and Specifications

• Material: Malleable Iron
• Size: 1-1/4” (FPT x FPT)
• Connection: Female National Pipe Tapered Thread (NPT)
• Finish: Black (oil-coated)
• Standards: ANSI B16.3, ASTM A197/A197M

Installation Notes

Use with compatible black steel or malleable iron pipe. Apply PTFE tape or pipe thread compound to male threads before assembly. Hand-tighten initially, then secure using pipe wrenches to recommended torque values. Do not overtighten to avoid stress cracking.

Applications

The BLK MAL ST90ELL 1-1/4” elbow is commonly used in:

• Steam, air, and gas systems
• Industrial process piping
• Mechanical HVAC lines
• Compressed air loops
• Fire protection (non-potable)

Field Insight

Malleable iron elbows are frequently selected for their strength in threaded applications, offering a better seal and longer service life compared to cast iron in high-vibration systems.

When structural reliability and threading accuracy are non-negotiable, the BLK MAL ST90ELL 1-1/4” 90-degree elbow delivers consistent results across a wide range of pipe installations. Trusted by professional installers for its strength and compatibility, this fitting performs under pressure—literally.