Overview
The TSP FM 660126 is a black malleable iron 90-degree elbow designed for general plumbing, hydraulic, pneumatic, and industrial fluid transfer applications. With female NPT threaded connections and a 1-1/4″ nominal pipe size, this fitting delivers reliable performance in Class 150 pressure-rated systems. The durable malleable iron construction and black finish make it suitable for both indoor and outdoor installations.
Key Features
- Black malleable iron construction for durability and corrosion resistance
- 90-degree elbow configuration for directional piping changes
- Female NPT threaded connections on both ends
- Class 150 pressure rating at 300 PSI maximum
- FM and UL approved for safety and code compliance
- NSF 61 certified for potable water applications
Technical Specifications
- Pressure Rating: Class 150 (300 PSI maximum)
- Connection Type: FNPT (female NPT) both ends
- Nominal Size: 1-1/4 inch
- Material: Malleable Iron per ASTM A197
- Finish: Black
- Temperature Range: -20°F to 150°F
- Industry Standards: ASME B16.3, ANSI/ASME B1.20.1
- Certifications: FM Approved, UL/ULC Listed, NSF 61, NSF 61 Annex G
Typical Applications
The TSP FM 660126 elbow is commonly used in:
- Potable and non-potable water distribution systems
- Hydraulic fluid and pneumatic piping
- Industrial pump discharge and suction lines
- Commercial and residential plumbing installations
- Low-pressure gas and steam systems
Compatibility & Replacements
Compatible With
- NPT threaded piping and fittings (1-1/4″ female connections)
- Hydraulic and pneumatic system components
- Standard plumbing supply lines and drain systems
- Industrial fluid transfer equipment rated for 300 PSI or less
- Potable water systems compliant with NSF 61
Replaces / Drop-In Replacement For
- Verify with your supplier for equivalent model cross-reference
- Other TSP 1-1/4″ black 90-degree elbows meeting ASME B16.3 standards
Works With
- NPT (National Pipe Thread) standard adapters and connectors
- All Class 150 malleable iron fittings
- Threaded pipe tape and sealants for NPT connections
- Pressure gauges and safety valves up to 300 PSI












