Male NPT Butt-Weld Adapter (19WB)

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Butt-Weld to male threaded tube adapter for stainless steel process lines

The Male National Pipe Thread (NPT) Tube Weld Adapter is available in 316L stainless steel alloys. Stainless steel material is resistant to corrosion and can withstand high temperatures. Available in 1/2" up to 4" Outside Diameter (OD). Male NPT x Tube OD Weld Adapters Part Numbers & Dimensions Male Threaded Weld Adapter Dimensions
Size (OD and NPT) Part Number Dimensions Line Drawing
304 316L A Wall
1/2" NA 19WB-.50-316 1.625 0.065 PDF
3/4" NA 19WB-.75-316 1.625 0.065 PDF
1" 19WB-1-304 19WB-1-316 1.750 0.065 PDF
1-1/2" 19WB-1.5-304 19WB-1.5-316 1.750 0.065 PDF
2 " 19WB-2-304 19WB-2-316 1.812 0.065 PDF
2-1/2" 19WB-2.5-304 19WB-2.5-316 2.312 0.065 PDF
3" 19WB-3-304 19WB-3-316 2.500 0.065 PDF
4" 19WB-4-304 19WB-4-316 2.562 0.083 PDF
19WB4-050 19WB4-075 19WB4-100 19WB4-150 19WB4-200 19WB4-250 19WB4-300 19WB4-400 19WB6-050 19WB6-075 19WB6-100 19WB6-150 19WB6-200 19WB6-250 19WB6-300 19WB6-400 19WB6-600


Questions & Answers 1

    What's the difference between NPT & NPS threads
  1. Q What's the difference between NPT & NPS threads
    NPS = National Pipe Straight
    NPT = National Pipe Thread
    Both NPT and NPS have the same thread angle, shape, and pitch (threads per inch). However, NPT threads are tapered and NPS threads are straight (parallel). Both threads have a 60° included angle and have flat peaks and valleys.
    Tapered Pipe Thread is commonly found on ends of pipe, nipples and fittings (i.e. couplings, elbows, tees, etc.). Note: Sharply angled threads are very critical to joint being tight with no leaks. Thread sealant or tape is typically required to complete the seal. Straight Pipe Threads need a gasket or O-ring to create a seal.
    While NPT and NPS threads will engage, they do not seal properly with each other.

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