SKUs available on this product page

19WB-.25-316, 19WB-1-304, 19WB-1.5-304, 19WB-2-304, 19WB-2.5-304, 19WB-3-304, 19WB-4-304, 19WB-4-316, 19WB-3-316, 19WB-2.5-316, 19WB-1.5-316, 19WB-1-316, 19WB-.75-316, 19WB-2-316, 19WB-.50-316,

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

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

Additional information

Line Drawings

SKUDescriptionLine Drawing
19WB-.25-316

1/4″ Male NPT x 1/4″ Butt Weld, 316

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19WB-.50-316

1/2″ Male NPT x 1/2″ Butt Weld, 316

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19WB-.75-316

3/4″ Male NPT x 3/4″ Butt Weld, 316

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19WB-1-304

1″ Male NPT x 1″ Butt Weld, 304

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19WB-1-316

1″ Male NPT x 1″ Butt Weld, 316

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19WB-1.5-304

1 1/2″ Male NPT x 1 1/2″ Butt Weld, 304

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19WB-1.5-316

1 1/2″ Male NPT x 1 1/2″ Butt Weld, 316

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19WB-2-304

2″ Male NPT x 2″ Butt Weld, 304

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19WB-2-316

2″ Male NPT x 2″ Butt Weld, 316

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19WB-2.5-304

2 1/2″ Male NPT x 2 1/2″ Butt Weld, 304

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19WB-2.5-316

2 1/2″ Male NPT x 2 1/2″ Butt Weld, 316

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19WB-3-304

3″ Male NPT x 3″ Butt Weld, 304

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19WB-3-316

3″ Male NPT x 3″ Butt Weld, 316

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19WB-4-304

4″ Male NPT x 4″ Butt Weld, 304

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19WB-4-316

4″ Male NPT x 4″ Butt Weld, 316

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    Is it possible to provide such adapters in duplex steel (SAF 2507) or hastelloy C-22 ?
  1. Q Is it possible to provide such adapters in duplex steel (SAF 2507) or hastelloy C-22 ?
    A

    We currently are not offering these types of fittings in alternative alloys.  I don't have any recommendations on where to source these either.

  2. What's the difference between NPT & NPS threads
  3. Q What's the difference between NPT & NPS threads
    A
    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.