Bellows valve
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What kind of valve is this, as shown in the picture? Is there any place that produces similar ones?
The lower section features a bellows seal, while the upper section uses a packing seal. It usually needs to be custom-made
Bellows valve types provide good sealing, but internal leakage may still occur over time; therefore, it is advisable to replace them regularly (especially when the fluid is corrosive)
Should it be imported or domestically produced?
Bellows valve, used in ammonia plants
Nantong Tianyuan Valve Manufacturing Co., Ltd. You can check it out: 13393388032
Bellows globe valve – a relatively common type of valve. Its difference from other globe valves lies in the use of bellows for sealing and protecting internal components such as the valve stem. It is suitable for use with high-temperature, highly corrosive media, as it provides effective protection for the valve stem and ensures good sealing performance
Many domestic manufacturers are capable of producing this type of stop valve. It depends on how much you measure.
There are many domestic manufacturers of bellows valves
Bellows single-seat valves are quite common.