1-1/2 inch x 3/4 inch Black Iron 90 Degree Reducing Elbow Female x Female

BLK MAL 90° Reducing Elbow – 1-1/2 inch x 3/4 inch FIP x FIP, Black Malleable Iron

The BLK MAL 90ELL 1-1/2 inch x 3/4 inch Reducing Elbow is a 90-degree threaded fitting used to change direction while reducing pipe diameter within black iron piping systems. Fabricated from malleable iron and finished with a black oxide coating, it is designed for low- to moderate-pressure systems including steam, air, gas, and oil distribution.

This reducing elbow features female NPT (National Pipe Tapered) threads on both ends and is machined to ANSI/ASME B1.20.1 thread standards. The fitting conforms to ASTM A197 for malleable iron castings and ASME B16.3 for dimensional requirements, ensuring a secure fit and long-term service life in mechanical and fuel gas installations.

Key Performance Attributes

• ✅ Threaded Design: NPT threads provide compatibility with steel pipe and other threaded malleable fittings.
• ✅ Angle and Reduction: Combines 90-degree directional change and pipe size reduction in one component.
• ✅ Material Compliance: Manufactured from malleable cast iron per ASTM A197 with uniform wall thickness for structural integrity.
• ✅ Black Finish: Coated for above-ground use in non-corrosive environments such as mechanical rooms and utility spaces.

Installation Notes

Install using standard threading practices. Apply PTFE tape or thread sealant to male threads before tightening. Torque should be applied evenly using a pipe wrench to avoid thread galling or misalignment. Not for use in potable water systems unless approved by the local authority having jurisdiction.

Technical Specifications

• Nominal Sizes: 1-1/2 inch x 3/4 inch
• Connection Type: Female NPT x Female NPT
• Material: Black Malleable Iron (ASTM A197)
• Standards: ASME B16.3, ANSI B1.20.1

Typical Applications

This fitting is widely used in piping systems that require space-efficient directional changes and size transitions—commonly found in HVAC piping, boiler connections, compressed air networks, and fuel gas supply systems. Its compact design makes it suitable for retrofit work and installations in tight mechanical spaces.

Material Insight

Black malleable iron is selected for its mechanical strength and temperature resistance in non-corrosive atmospheres. It is suitable for pressure-rated piping installations and is a standard choice for gas and oil supply lines where welding is not feasible or permitted.

The BLK MAL 90ELL 1-1/2 inch x 3/4 inch Reducing Elbow delivers a durable, code-compliant solution for directional transitions in threaded steel piping systems. Engineered for longevity and consistent performance in commercial and industrial applications.