Hollow valve

Category：Engine intake and exhaust valves
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Release time：2023-03-29 16:10:00

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Product description

Product name: Hollow valve

Hollow valve

Hollow sodium filled valves are commonly found in medium-sized vehicles. The valve stem is hollow in the middle and filled with metallic sodium. When the valve is opened and closed, sodium vibrates up and down in the valve stem. Due to its very high heat resistance, its melting point is 97.7 degrees Celsius, and its boiling point is 883 degrees Celsius. It absorbs heat from the valve head and flows to the lower end of the valve stem for cooling by cooling water. Therefore, it can absorb a large amount of heat, achieving the effect of cooling the valve.