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Why should hard seals be chosen as much as possible for shut-off valves?

Author：Shanghai Lianggong ValvesTime：2025-06-18 03:06:18 Number of views

Abstract：

The shut-off valve should have as low leakage as possible. The leakage of the soft-sealed valve is the lowest, and the shut-off effect is of course good, but it is not wear-resistant and has poor reli

Why should hard seals be chosen as much as possible for shut-off valves?(图1)

The shut-off valve should have as low leakage as possible. The leakage of the soft-sealed valve is the lowest, and the shut-off effect is of course good,

 but it is not wear-resistant and has poor reliability. From the dual standards of low leakage and reliable sealing, soft sealing cut-off is not as good as 

hard sealing cut-off. For instance, the full-function ultra-light control valve is sealed and protected by wear-resistant alloy, with high reliability and a

 leakage rate of 10 to 7, which can already meet the requirements of shut-off valves

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