3/8 inch x 1/4 inch Black Iron 90 Degree Reducing Elbow Female x Female

Black Malleable Iron 90° Reducing Elbow – Threaded Fitting for Directional Transitions

The Black Iron 90 Degree Reducing Elbow is designed to enable a 90° change in flow direction while transitioning between different nominal pipe sizes in rigid piping systems. This fitting features female National Pipe Thread (NPT) connections on both ends and is commonly used in natural gas, compressed air, and low-pressure hydronic systems.

Manufactured from malleable iron conforming to ASTM A197 and produced under dimensional standards such as ASME B16.3, this reducing elbow supports consistent engagement and sealing across a range of mechanical and industrial applications. The black iron finish offers suitability for interior environments where corrosion protection is not required from galvanization.

Product Features

• ✅ Material: Black malleable iron – heat-treated for strength and machinability.
• ✅ Connection Type: Female NPT x Female NPT – tapered threads for pressure-tight sealing.
• ✅ Angle: 90° – for sharp directional turns in compact installations.
• ✅ Nominal Sizes: 3/8 inch x 1/4 inch – reducing configuration for mixed diameter piping systems.

Standards and Compliance

• Material Standard: ASTM A197 – malleable cast iron fittings
• Dimensional Standard: ASME B16.3
• Thread Standard: ANSI/ASME B1.20.1
• Application Class: Rated for use in non-corrosive, low-pressure piping systems

Installation Guidelines

Install using appropriate thread sealant or PTFE tape to ensure leak-free operation. Do not overtighten, as excessive torque may damage fitting threads. All threaded connections should be tested for leakage in accordance with project specifications or code requirements. This fitting is intended for systems not exposed to corrosive environments unless protective coatings are specified.

Common Applications

Frequently used in mechanical system layouts where a change in direction and size is required, such as gas risers, boiler loops, and compressed air networks. The reducing elbow configuration enables space-efficient piping in retrofit and new-build installations where system integrity and pressure retention are critical.

Material Insight

Black malleable iron fittings are widely used in structural and utility piping due to their tensile strength, machinability, and ease of installation. The absence of a galvanized coating makes them suitable for indoor or dry-location use where exposure to corrosive moisture is not expected.

The Black Iron 90° Reducing Elbow offers a reliable solution for directional and diameter transitions in threaded piping systems, meeting industry specifications for safety, performance, and dimensional accuracy.