The overlay welding(hardfacing) for valve sealing

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Sealing surface is the key part of the valve, in the sealing…

What’s orifice valves and what’s used for?

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Orifice valve is a type of flow metering throttling device which…

Ventilator valve, blow down valve and reverse flow valve for turbine system

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As a prime mover for large, high-speed operations, the steam…