Gas Ballast Valve

A small hole is opened in the compression chamber of the oil-sealed mechanical vacuum pump, and a regulating valve is installed. When the valve is opened and the air volume is adjusted, the rotor turns to a certain position, and air is mixed into the compression chamber through this hole to reduce the compression ratio, thereby making the steam not condensing and is discharged from the pump together with the mixed gas. The valve that plays this role is called the gas ballast valve.

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