Threaded Pipe Fittings with NPT Threads
Simple, reliable, and field-proven — our threaded fittings use the tapered National Pipe Thread (NPT) profile to create a mechanical, self-sealing joint without the need for welding, flanging, or additional gasket material. Every fitting is precision-machined or cast to tight tolerances so threads engage smoothly and seal consistently, batch after batch.
Key Features
- Full range including elbows (45°/90°), tees, crosses, couplings, unions, plugs, bushings, caps, and nipples
- Available in cast iron, malleable iron, ductile iron, stainless steel, and brass to suit pressure, temperature, and corrosion requirements
- Tapered NPT thread profile creates increasing interference as fittings are tightened, producing a leak-tight mechanical seal
- Pressure ratings from 150# (standard duty) up to 300# (extra heavy) class
- Broad size range from 1/8″ through 12″, with custom sizes and thread modifications available on request
- Consistent thread tolerancing ensures compatibility with standard NPT-threaded equipment worldwide
Where They’re Used: Residential and commercial plumbing, HVAC systems, compressed air and pneumatic lines, oil & gas field piping, general industrial process lines.
