Electric opening and closing mechanism for external thread gate valve

Abstract

This product is a submersible electric opening and closing device for externally threaded gate valves that can be used while submerged in water, and as shown in the "Reference oblique view showing an example of how to use it and the names of each part" and the "Reference view of the top of this product showing the expansion and contraction of the valve stem cover," the sealed (waterproof) valve stem cover is expandable, so even if the valve stem moves up and down when the externally threaded gate valve is opened or closed, the volume change inside the valve stem cover is absorbed by the expansion and contraction of the valve stem cover, preventing damage to the valve stem cover.

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