2 inch x 1-1/4 inch Black Iron 90 Degree Reducing Elbow Female x Female

2" x 1-1/4" Black Malleable Iron 90° Reducing Elbow – Threaded Fitting

The 2" x 1-1/4" 90-degree reducing elbow is a malleable iron fitting designed for use in threaded piping systems where a change in direction and reduction in size is required. This fitting provides a 90° transition between a 2-inch and 1-1/4-inch nominal pipe size, commonly used in gas, water, steam, and air systems that require non-corrosive, high-strength components.

Manufactured in compliance with ANSI/ASME B16.3 and ASTM A197 standards, this elbow features NPT (National Pipe Tapered) threads that allow for tight mechanical seals when used with compatible piping and thread sealant. Its black iron finish is suitable for oil-free systems and those not requiring galvanized protection.

Performance and Material Features

• ✅ Thread Standard: NPT female threads on both ends per ANSI B1.20.1
• ✅ Material: Malleable cast iron per ASTM A197, with high tensile strength and good impact resistance
• ✅ Finish: Black iron (non-galvanized), intended for indoor use in gas or hydronic applications
• ✅ Operating Pressure: Rated for working pressures up to 150 psi for steam and 300 psi for water/oil/gas (WOG) at ambient temperatures
• ✅ Application: Suitable for fuel gas distribution, hydronic heating loops, fire sprinkler headers, and other non-potable mechanical systems

Technical Specifications

• Connection Type: Female NPT x Female NPT
• Nominal Sizes: 2" x 1-1/4"
• Angle: 90 degrees
• Standard Compliance: ANSI/ASME B16.3, ASTM A197, UL Listed, FM Approved (when applicable)

Installation Requirements

Install with appropriate sealing compound or PTFE tape on male threads. Hand-tighten and finish with a wrench, being careful not to overtighten to avoid thread distortion. Threaded joints should be inspected for proper makeup and tested for leaks in accordance with project specifications and applicable codes (e.g., NFPA 54 for gas).

Use Case Environments

Typically installed in black steel piping systems within commercial, industrial, or multifamily residential settings. This reducing elbow is used for branch takeoffs, appliance hookups, and any location where space constraints require a 90° directional change and pipe size reduction.

Material Insight

Malleable iron fittings are chosen for their machinability, mechanical strength, and thermal tolerance. Black iron variants are used in systems that do not require galvanized corrosion resistance, making them standard in many fuel and HVAC applications.