Can a butterfly valve with a hard seal achieve zero leakage?
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Butterfly valve, hard seal, hydraulic pressure, pneumatic pressure – is it possible to achieve no leakage?
The three-eccentric multi-layer hard-sealed butterfly valve is capable of achieving this
It is very difficult to achieve complete leaklessness, and three-eccentric hard-sealed butterfly valves are the best for controlling leakage rates.
Three-eccentric butterfly valves are suitable; the sealing rings are made of graphite and metal, and they can handle both water pressure and air pressure
Three eccentricities, multiple layers~~ It’s all about those tears of bitterness~~~~
It is difficult to achieve this with butterfly valves; if there is sufficient installation space, ball valves or globe valves are recommended.
Generally, manufacturers that use 304 material with a graphite interlayer, or soft seals such as PTFE, can achieve zero leakage. Well-designed butterfly valves with metal components in direct contact can also achieve zero leakage. Zero leakage means that, over a certain period of time, no bubbles or water seep out, whether it’s under air pressure or water pressure. . . . .