Premium Black Malleable Iron Gas Pipe Tee Fitting (ASME B16.3 and ASTM A197 Compliant)
Engineered specifically for heavy-duty natural gas, LP (liquid propane), and compressed air systems, our Premium Black Malleable Iron Tee Fittings provide a highly dependable, leak-free 90-degree branch junction in your piping network. Manufactured from high-strength cupola malleable iron, these threaded three-way fittings are built to withstand the physical vibration, thermal cycling, and constant load stress common in residential, commercial, and industrial gas distribution loops.
Featuring precision-cut internal National Pipe Taper (NPT) threads, these tees ensure an exceptionally tight mechanical wedge fit when paired with standard schedule 40 black steel pipes. Every fitting is factory pressure-tested to guarantee zero wall porosity, offering ultimate safety behind walls or overhead in plenum spaces.
Key Features and Benefits
Heavy-Duty Malleable Iron Construction: Cast from premium ASTM A197 cupola malleable iron, delivering excellent tensile strength and fatigue resistance compared to standard cast iron. It will not crack or fracture under heavy pipe wrench installation torque.
Engineered 3-Way Gas Branching: Allows for efficient splitting or combining of gas lines at a clean right angle, facilitating easy drops to auxiliary furnaces, kitchen stoves, water heaters, and boilers.
Precision-Tapered NPT Threads: CNC-machined to strict ASME B1.20.1 standards. The smooth, deep-cut internal threads allow thread sealants to distribute uniformly, creating a gas-tight seal that completely eliminates bypass leaks.
Naturally Finished Black Coating: Treated with a raw black oxide finish and a light factory oil coat to provide dependable storage protection against atmospheric humidity and oxidation before job-site installation.
Industry Code and Safety Compliant: Meets all dimensional metrics of ASME B16.3 and carries UL Listing and FM Approval, ensuring it fully satisfies strict local municipal mechanical and gas plumbing building codes.
Technical Specifications
Fitting Profile: Equal Straight Tee (Three Female Openings of Identical Diameter)
Material Standard: ASTM A197 / A197M Cupola Malleable Iron Castings
Dimensional Standard: ASME B16.3 Class 150 Malleable Iron Threaded Fittings
Thread Specification: ANSI / ASME B1.20.1 National Pipe Taper Threads
Pressure and Temperature Ratings: Rated for up to 300 PSI at 150 degrees Fahrenheit, or 150 PSI at 300 degrees Fahrenheit saturated steam
Fluid Compatibility: Natural gas, liquid petroleum (LP) gas, compressed air, oils, and non-potable closed systems (Note: Not for use in domestic potable water lines due to rust risks).
Ideal Applications
Branching Natural Gas Supply Lines from Main Metres to Individual Structural Appliances
Tapping Propane Gas Lines in Residential Kitchens and Commercial Food Service Areas
Fabricating Overhead Compressed Air Loop Manifolds in Mechanical and Automotive Shops
Industrial Chemical and Petrochemical Processing Plant Low-Pressure Fluid Routing
