Gate valves are the most widely used and crucial shut-off and regulating valves in marine piping systems. Their core functions are reliable shut-off, precise throttling, and safe isolation. They are widely used in critical systems such as fuel oil, cooling water, ballast, fire protection, steam, and water supply and drainage, and are fundamental components for safe navigation and maintenance of ships.

I. Structure and Principle The opening and closing element is a plug-shaped valve disc that moves linearly along the valve seat centerline. On/off switching and flow regulation are achieved through the raising and lowering of the valve stem.

Key Features:

● Reliable Sealing: Planar/conical surface sealing, zero leakage after closure, suitable for high-pressure conditions.

● Adjustable Flow: Opening degree is approximately proportional to flow rate, allowing for precise throttling.

● Short Stroke, Fast Opening and Closing: Short valve stem stroke, low operating torque, suitable for manual/electric/pneumatic control.

● Unidirectional Flow: The medium flows in from below the valve disc, avoiding back pressure impacting the sealing surface.