316L Stainless steel straight-through internal and external thread connector

Home / Products / Stainless Steel Tube Fittings / Tube Fittings / 316L Stainless steel straight-through internal and external thread connector

316L Stainless steel straight-through internal and external thread connector

This fitting is a precision accessory used for changing connection types in piping systems. The product has a linear overall structure with a continuous internal flow channel. The connection end features an asymmetrical design with internal threads on one end and external threads on the other. Its core function is interface conversion and straight-line connection. It is primarily used to connect pipe fittings, valves, or equipment with the same nominal diameter but different interface types. This fitting is a crucial transition element when it is necessary to connect a valve port with external threads to a pipe flange or fitting with the same external threads, or when it is necessary to draw an externally threaded pipe from a tee or elbow with internal threads.

  • Description
  • Contact Us

REDUCING ADAPTOR

P MALE PT/NPT SIZE

P1 MALE PT/NPT SIZE

CATALOG NUMBER

A

E MIN OPENING

F HEX FLAT

1/8

1/8

RA-01-01

27.7 

4.8 

14 

1/4

1/8

RA-02-01

32 

4.8 

19 

1/4

1/4

RA-02-02

35.6 

7.1 

19 

3/8

1/8

RA-03-01

33.8 

4.8 

22 

3/8

1/4

RA-03-02

38.1 

7.1 

22 

3/8

3/8

RA-03-03

38.1 

9.5 

22 

1/2

1/8

RA-04-01

40.1 

4.8 

27 

1/2

1/4

RA-04-02

44.7 

7.1 

27 

1/2

3/8

RA-04-03

44.7 

9.6 

27 

1/2

1/2

RA-04-04

49.3 

11.9 

27 

3/4

1/4

RA-06-02

46.2 

7.1 

32 

3/4

3/8

RA-06-03

46.2 

9.6 

32 

3/4

1/2

RA-06-04

51.3 

11.9 

32 

1"

1/4

RA-08-02

49.8 

7.1 

41 

1"

3/8

RA-08-03

49.8 

9.6 

41 

1"

1/2

RA-08-04

54.9 

11.9 

41 

1"

3/4

RA-08-06

55.1 

15.7 

41 

All dimensions are in millimeters. Dimensions for reference only, 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.

Certificate Of Honor
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...