What is Threadolet?

Threadolet is a type of self-reinforced branch fitting developed by a Company called Bonney Forge. It is used whenever threaded branch connections are required from the pipe header. Mostly, it is used for small-size piping with a low-pressure application.

Threadolets are available in full size or reducing size. Full size is when you take a branch of the same size as run pipe size, for example, 3 inches to 3 inches. And reducing size is when branch size is less than run pipe size. For example, 3 inches to 1 inch. Threadolet ’s end is suited for the threaded connection.

This olet is available in class 3000 and class 6000 pressure-temperature ratings.

Thredolet

Threadolet® is a Registered Trademark of Bonney Forge.

Threadolet Dimensions

During the Dimensional inspection of the threadolet, you should check for

  • Outer & Inner Diameter of body
  • Length of the Hub
  • Thread Dimensions

Being a trailer product, threadolets are designed for specific conditions based on Process piping Code ASME B31.3; hence, Dimension is also specified by the designer. However, MSS-SP-97 provides dimension requirements for standard 90° self-reinforced branch connection with butt, socket, and threaded end types.

threadolet dimensions

Class 3000 Dimensions

Size in Inches A B C D Weight in KG
1/8 19.05 25.40 15.88 0.05
1/4 19.05 25.40 15.88 0.05
3/8 20.64 31.75 19.05 0.09
1/2 25.40 35.72 23.81 0.11
3/4 26.99 43.66 29.37 0.16
1 33.34 50.80 36.51 0.27
1 1/4 33.34 65.09 44.45 0.41
1 1/2 34.93 72.23 50.80 0.45
2 38.10 88.11 65.09 0.79
2 1/2 46.04 103.19 76.20 1.36
3 50.80 122.24 93.66 1.97
3 1/2 53.98 132.56 101.60 2.61
4 57.15 151.61 120.65 3.22
5 66.68 185.74 141.29 5.44
6 69.85 219.08 169.86 6.94

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Class 6000 Dimensions

Size in Inches A B C D Weight in KG
1/4 28.58 34.13 14.29 0.14
3/8 28.58 34.13 14.29 0.14
1/2 31.75 43.66 19.05 0.20
3/4 36.51 49.61 25.40 0.34
1 39.69 61.91 33.34 0.57
1 1/4 41.28 69.06 38.10 0.73
1 1/2 42.86 82.55 49.21 0.88
2 55.03 102.39 69.85 2.27

Size on Size Class 3000 Dimensions

Size in Inches A B C D Weight in KG
1/2 25.40 34.93 23.81 15.88 0.07
3/4 26.99 41.28 30.16 20.64 0.11
1 33.34 50.80 36.51 26.99 0.20
1 1/4 33.34 60.33 44.45 34.93 0.32
1 1/2 34.93 73.03 50.80 41.28 0.41
2 38.10 88.90 65.09 52.39 0.64
2 1/2 48.42 103.19 76.20 63.50 1.13
3 50.80 122.24 93.66 77.79 1.95
3 1/2 53.98 136.53 112.71 90.49 2.04
4 57.15 153.99 120.65 103.19 3.08
5 61.91 184.15 133.35 133.35 4.17
6 69.85 220.66 146.05 146.05 7.12

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About Author

Varun Patel, B.E – Mechanical, PMP®

19+ years of experience in the oil and gas sector, specializing in project management, contracts, project control, project coordination, QA/QC and inspection of large-scale Greenfield and Brownfield Projects such as Refinery, Petrochemical, Wellhead production, and Process platform. Proven track record of delivering large-scale projects while ensuring adherence to safety and quality standards. Skilled in leading and mentoring cross-functional teams and resolving technical issues to achieve successful project outcomes.