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ASTM A351 CF8 MSS SP-114 CL150 1¼” Cast Threaded Banded Coupling
Product Information
A cast threaded banded coupling is a type of coupling used in piping systems to connect two pipes with threaded ends.
· The coupling is designed with female threads on the inside to match the male threads on the ends of the pipes it connects.
· It typically has a banded or ribbed exterior for added grip and to provide a surface for tightening the coupling securely.
| Product Name | ASTM A351 CF8 MSS SP-114 CL150 1¼” Cast Threaded Banded Coupling |
| Thread Types | ASME B1.20.1(NPT), BS 21 (NSPT), DIN2999/259 |
| Dimensions | MSS SP-114 |
| Size Range | 1¼” |
| Pressure Class | Class 150, 1000, 2000, 3000, 6000 and 9000 |
| Materials | ASTM A351 CF8 |
ASTM A351 CF8 and CF8M
ASTM A351 CF8 and CF8M are austenitic stainless steel, exhibit good strength and ductility. CF8/CF8M are widely applied in pump and valve, marine, chemical processing, food processing industries, CF8 is also be applied in nuclear and defense industries.
ASTM A351 CF8/CF8M Chemical Composition (%)
| Grade | C | Mn | Cr | Mo | Ni | Fe | Cu |
| CF8 | 0-0.08 | 0-1.5 | 18-21 | 0-0.5 | 9-11 | Bal | 0.00-0.00 |
| CF8M | 0-0.08 | 0-1.5 | 18-21 | 2-3 | 9-12 | Bal | 0.00-0.00 |
ASTM A351 CF8/CF8M Mechanical Properties
| Grade | Tensile Strength (ksi) | Yield Strength (ksi) | Elongation (%) | Hardness (Brinell) |
| CF8 | 0.00-70 | 30 | 35 | 134-196 |
| CF8M | 0.00-70 | 30 | 30 | 146-212 |
Applications:
· These couplings are used in various piping systems for joining and extending pipe lengths.
· Commonly found in plumbing, HVAC systems, industrial applications, and other fluid or gas handling systems where threaded connections are used.
Dimensions of Class 150 Cast Threaded Coupling (Straight and Reducing Sizes) (in inches)
| NPS | Length of Thread(b) (min.) | Width of Band (min.) | Metal Thickness(a) | Outside Dia. of Band(c) (min.) | Length of Straight Couplings (min.) | Length of Concentric Reducing Couplings (min.) |
| B | E | G | H | W | M | |
| ⅛ | 0.25 | 0.20 | 0.09 | 0.75 | 1.00 | — |
| ¼ | 0.32 | 0.20 | 0.09 | 0.84 | 1.00 | 1.00 |
| ⅜ | 0.36 | 0.21 | 0.10 | 1.01 | 1.12 | 1.12 |
| ½ | 0.43 | 0.25 | 0.10 | 1.20 | 1.38 | 1.38 |
| ¾ | 0.50 | 0.27 | 0.12 | 1.46 | 1.50 | 1.50 |
| 1 | 0.58 | 0.30 | 0.13 | 1.77 | 1.62 | 1.62 |
| 1¼ | 0.67 | 0.34 | 0.14 | 2.15 | 2.00 | 2.00 |
| 1½ | 0.70 | 0.37 | 0.15 | 2.43 | 2.12 | 2.12 |
| 2 | 0.75 | 0.42 | 0.17 | 2.96 | 2.50 | 2.50 |
| 2½ | 0.92 | 0.48 | 0.21 | 3.31 | 2.87 | 3.25 |
| 3 | 0.98 | 0.55 | 0.23 | 4.00 | 3.18 | 3.68 |
| 4 | 1.08 | 0.66 | 0.26 | 5.06 | 3.68 | 4.38 |
GENERAL NOTE: Reducing couplings may be either bell or straight. The outside diameter (H) of straight reducing couplings shall correspond to the largest size end connection of the reducing fitting.
NOTES:
(a) Patterns shall be designed to produce castings of metal thickness given in the Table. Metal thickness at no point shall be less than 90% of values given in the Table.
(b) The length of thread may extend beyond the width of band. However, minimum metal thickness (G) must be maintained at the end of the thread.
(c) Couplings, half couplings and reducing couplings may be banded or non-banded.
(d) Ribs are permitted as per Section 9. The applicable “external” broken lines in the drawings above indicate where ribs are allowed.