316L Stainless Steel Pipe to Pipe Internal Thread Adapter

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316L Stainless Steel Pipe to Pipe Internal Thread Adapter

The 316L Stainless Steel Pipe to Pipe Internal Thread Adapter is a transitional fitting for connecting piping systems. Its main structure is designed to connect two pipe or equipment ports. The core feature of this product lies in its composite connection method: one end (or both ends) is designed with a butt-weld bevel for permanent welding to the pipe; while the inside is machined with standard internal threads for connecting valves, instruments, fittings, or other components with external threads. The internal flow channel design prioritizes a smooth transition. The inner wall is finely polished, with a surface roughness typically controlled to Ra ≤ 0.8μm or even lower (Sanitary grade can reach Ra ≤ 0.5μm). This not only reduces the fluid resistance coefficient but, more importantly, prevents media retention and deposition at rough surfaces.

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FEMALE ADAPTER/Tube

Connects fractional NB-KSL port to male PT(NPT) thread

CATALOG NUMBER

T TUBE O.D.

PT-NPT FEMALE PIPE
SIZE

A

B

C

E

TAF-02-1

1/4

1/8

33 

15.7 

14 

4.4 

TAF-02-2

1/4

1/4

37.1 

15.7 

19 

4.4 

TAF-02-3

1/4

3/8

39.5 

15.7 

22 

4.4 

TAF-02-4

1/4

1/2

45.5 

15.7 

27 

4.4 

TAF-03-1

3/8

1/8

34.3 

17.6 

14 

7.1 

TAF-03-2

3/8

1/4

38.1 

17.6 

19 

7.1 

TAF-03-3

3/8

3/8

40.4 

17.6 

22 

7.1 

TAF-03-4

3/8

1/2

46.7 

17.6 

27 

7.1 

TAF-04-2

1/2

1/4

43.4 

23.2 

19 

9.9 

TAF-04-3

1/2

3/8

45.5 

23.2 

22 

9.9 

TAF-04-4

1/2

1/2

52.3 

23.2 

27 

9.9 

TAF-06-4

3/4

1/2

53.8 

24.7 

27 

15 

TAF-06-6

3/4

3/4

54.9 

24.7 

32 

15 

TAF-06-8

3/4

1"

58.4 

24.7 

41 

15 

TAF-08-4

1"

1/2

60.7 

30.7 

27 

18 

TAF-08-8

1"

1"

64.2 

30.7 

41 

19.6 


Connects metric NB-KSL port to male PT (NPT ) thread

TAF-6-1 1/8 33  15.7  14  4.4 
TAF-6-2 1/4 37.1  15.7  19  4.4 
TAF-6-3 3/8 39.5  15.7  22  4.4 
TAF-8-2 1/4 37.6  16.5  19 
TAF-8-3 3/8 39.5  16.5  22 
TAF-10-2 10  1/4 38.1  17.6  19  7.1 
TAF-10-3 10  3/8 40.1  17.6  22  7.1 
TAF-10-4 10  1/2 46.5  17.6  27  7.1 
TAF-12-2 12  1/4 43.4  23.2  19  9.1 
TAF-12-3 12  3/8 45.5  23.2  22  9.1 
TAF-12-4 12  1/2 52.3  23.2  27  9.1 
TAF-18-4 18  1/2 54.8  24.7  27  14 

All dimensions are in millimeters unless otherwise specified, only for reference subject to change.

About Us
Ningbo Keshengli Stainless Steel Valve Co., Ltd.
Ningbo Keshengli Stainless Steel Valve Co., Ltd.

Our company specializes in the manufacturing and sales of stainless steel pipe fittings and valves in national (GB), American (ANSI/ASME), and British (BS) standards. We are equipped with advanced CNC machining centers, material testing and heat treatment facilities, a skilled technical team, and a robust production workforce. With a sound quality management system and excellent after-sales service, we sincerely serve customers worldwide.

Our main products include: ferrule-type fittings, threaded fittings, instrument fittings, instrument needle valves, instrument ball valves, ferrule needle valves, ferrule ball valves, compact high-pressure instrument needle valves, compact high-pressure instrument ball valves, and high-pressure check valves. The primary material is SS316 stainless steel. These products are widely used in petrochemical, petroleum, electric power, pharmaceutical, food, papermaking, marine, and general machinery industries.

We strictly control product quality at every stage and are committed to delivering superior quality through advanced technology and professional management. Adhering to the business philosophy of "Quality First, Customer Supreme, Integrity Foremost," we strive to build the "NB-KSL" brand image, better serve our customers, and work together with you to create a prosperous future.

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News
  • NB-KSL® fittings are supplied assembled and finger tight. Disassembly before use can allow the entry of dirt or other particles.

  • The NB-KSL® tube fitting is a mechanism used both to seal and to grip tubing. The mechanical advantage and geometry of this type of fitting produce a leak-tight assembly. To assemble, simply insert th...

  • NB-KSL® has produced high quality tube and pipe fittings in various materials for high-pressure applications since its establishment in 2007. As a result of tremendous efforts in research and developm...