螺纹对焊球阀具有体积小、抗震动的特点。维修时，只需直接拆卸四支螺栓，阀体部分即可 取出，便于更换损坏部件。适用于轻工机械体积小、空间窄的场合。
Threaded & welded ball valve has the characteristics of small volume, shock resistant. When maintenance, you only need to remove the four bolts directly, and removes the body part, which is easy to replace the damaged parts. It is suitable for the small volume of light industry machine and the occasion of narrow space.