Problem with the stop valve
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Two bolts used to secure the packing gland of a shut-off valve inside the unit were broken (two in total, with one of them breaking). The pressure before the valve was 6.5 MPa; it was not possible to shut off this valve directly due to process requirements. It had been almost unused for many years and remained in a closed state. Its structural design included a pressure-sealing valve cover, a bolted gland, and a stem support. Theoretically, based on this valve structure, when it is in the closed state and the valve downstream of it is also closed, the discharge component should be able to be replaced directly; I wonder if this approach is feasible? Please share any other suggestions; thank you!
In the closed position, the packing of the globe valve should be free from pressure; however, with a pressure of 6.5 MPa and years of operation in a hydrogen sulfide environment, is the valve core reliable? So I don’t dare to simply disassemble and replace it easily
It’s in a closed state, so this broken bolt should be able to be replaced directly.