316L Stainless Steel reducing double external thread connector

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316L Stainless Steel reducing double external thread connector

The core design feature of this product lies in its double external thread structure and diameter reduction function. The double external thread design provides a larger thread engagement area when connecting pipes of different specifications, while the diameter reduction function allows for a smooth transition between pipes of different diameters, ensuring stable fluid flow in the system, reducing turbulence and pressure drop. It is particularly suitable for chemical reactors, steam pipelines, and high-precision liquid transport networks. The threaded portion is machined using high-precision CNC machine tools, with strict control over thread tolerances, ensuring a smooth and secure connection while reducing thread wear and leakage risks.

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REDUCING HEX NIPPLE

P MALE PT/NPT SIZE

P1 MALE PT/NPT SIZE

CATALOG NUMBER

A

E MIN OPENING

F HEX FLAT

1/4

1/8

RHN-02-01

31 

4.8 

14 

7.1 

3/8

1/8

RHN-03-01

31.8 

4.8 

17 

9.6 

3/8

1/4

RHN-03-02

36.3 

7.1 

17 

9.6 

1/2

1/8

RHN-04-01

37.3 

4.8 

22 

11.9 

1/2

1/4

RHN-04-02

41.9 

7.1 

22 

11.9 

1/2

3/8

RHN-04-03

41.9 

9.5 

22 

11.9 

3/4

1/4

RHN-06-02

41 

7.1 

27 

15.7 

3/4

3/8

RHN-06-03

41 

9.5 

27 

15.7 

3/4

1/2

RHN-06-04

46.7 

11.9 

27 

15.7 

1"

1/2

RHN-08-04

54.1 

11.9 

35 

21.5 

1"

3/4

RHN-08-06

54.1 

15.7 

35 

21.5 

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...