The main safety valve shall be fastened upon the gallow, . Which sustains the counterforce produced in the steam discharging process of the main safety valve .
主安全阀紧固在支座上，支座承受主安全阀排汽时产生的反作用力。
The main safety valve shall be fastened upon the gallow, . Which sustains the counterforce produced in the steam discharging process of the main safety valve .
主安全阀紧固在支座上，支座承受主安全阀排汽时产生的反作用力。
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