1 inch Black Iron 90 Degree Elbow Female x Female

1" Black Malleable Iron 90° Elbow – FNPT x FNPT for Threaded Pipe Systems

The 1" Black Malleable Iron 90 Degree Elbow is a threaded pipe fitting used to make right-angle turns in piping systems where space, alignment, or directional change is required. This elbow is manufactured in compliance with ASME B16.3 and made from black malleable iron conforming to ASTM A197.

It features female National Pipe Thread (FNPT) connections on both ends, compatible with standard schedule 40 and schedule 80 steel pipe. The black finish is suitable for non-corrosive, above-ground applications including gas distribution, hydronic heating, and low-pressure steam.

Product Features

• ✅ Material: Malleable iron per ASTM A197 with black finish for above-ground use
• ✅ Connection Type: FNPT x FNPT, tapered threads per ASME B1.20.1
• ✅ Angle: 90 degrees – designed for standard directional changes in rigid piping systems
• ✅ Service Rating: Typically rated for up to 150 PSI for steam and 300 PSI for water, oil, and gas (WOG) applications

Specifications

• Nominal Size: 1 inch
• End Connections: Female NPT x Female NPT
• Compliance: ASME B16.3, UL and FM listings where applicable
• Application Use: Non-potable systems such as gas, air, oil, steam, and fire protection piping

Installation Guidelines

Apply appropriate thread sealant (e.g., PTFE tape or pipe dope) to male threads before assembly. Use pipe wrenches to apply torque evenly, avoiding over-tightening that may distort threads or crack the fitting. Follow all local code requirements, particularly for gas or pressure-rated piping installations. This fitting is not suitable for potable water use without additional coatings or lining.

Typical Applications

Used extensively in natural gas piping, fire sprinkler systems, low-pressure steam lines, and hydronic heating loops. Commonly installed in mechanical rooms, equipment branches, and horizontal offsets in threaded piping networks where 90° redirection is required.

Note on Material Selection

Black iron fittings are intended for dry or oil-based systems and should not be used in corrosive or potable water environments unless approved by local code or treated accordingly.

The 1" Black Iron 90 Degree Elbow offers a dependable solution for right-angle transitions in pressure-rated piping systems, supporting a wide range of mechanical and HVAC applications that require precision alignment and robust mechanical strength.