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Bushing
Bushing
The stem reducer joint is a standard part of the sucker rod pump and connects the upper stem of the plunger to the rod string.The connecting part with the valve stem is the key to the structure of the product. The more likely problem to occur is the breaking off of the connecting valve stem.Therefore, its material’s selection and structural strength’s design need to fully consider the product’s operating environment.
Model | Valve rod | Sucker rod | Part No. | API No. | Lq，mm | Photo |
B21—Bushing, Valve Rod | 11/16” | 5/8” | B21-15(XX) | B21-15 | 19.1 |
|
11/16” | 3/4” | B21-20(XX) | B21-20 | 19.1 | ||
7/8” | 3/4” | B21-25(XX) | B21-25 | 19.1 | ||
7/8” | 7/8” | B21-25(XX)-7/8 | — | 19.1 | ||
1 1/16” | 3/4” | B21-30(XX) | B21-30 | 19.1 | ||
1 1/16” | 7/8” | B21-30(XX)-7/8 | — | 19.1 | ||
1 1/16” | 1” | B21-30(XX)-1 | — | 19.1 | ||
1 1/4” | 1” | B21-40(XX)-1 | — | 19.1 | ||
Note： 1）“XX” is Material identification symbol； 2） Lq is the counterbore depth at the thread end of the pipeline. | ||||||
B21M—Bushing, Valve Rod | 11/16” | 5/8” | B21M-15(XX) | B21M-15 | 38.1 | Photo |
11/16” | 3/4” | B21M-20(XX) | B21M-20 | 38.1 |
| |
7/8” | 3/4” | B21M-25(XX) | B21M-25 | 38.1 | ||
7/8” | 7/8” | B21M-25(XX)-7/8 | — | 38.1 | ||
1 1/16” | 3/4” | B21M-30(XX) | B21M-30 | 38.1 | ||
1 1/16” | 7/8” | B21M-30(XX)-7/8 | — | 38.1 | ||
1 1/16” | 1” | B21M-30(XX)-1 | — | 38.1 | ||
1 1/4” | 1” | B21M-40(XX)-1 | — | 38.1 | ||
Note： 1）“XX” is Material identification symbol； 2）Lq is the counterbore depth at the thread end of the pipeline. The increase in Lq length effectively reduces the occurrence of fractures at the valve rod threads, suitable for deep well and high SPM well. | ||||||
More information,please download the above PDF brochure.Thank you!