American standard loose gear gate valve

Product structure 

 Nominal diameter: DN15-600 

 Product model:/ 

 Pressure range: 1.6-2.5MPa 

 Use of the product 

 The flow resistance is small. The internal medium channel of the valve body is through, and the medium flows in a straight line with low flow resistance. It is more labor-saving when opening and closing. Compared with the shut-off valve, whether it is open or closed, the direction of movement of the gate is perpendicular to the direction of medium flow. The height is large and the opening and closing time is long. The opening and closing stroke of the gate is large, and the descent is carried out by the screw. The phenomenon of water hammer is not easy to occur. The reason is that the closing time is long. The medium can flow in any direction on both sides, which is easy to install. Both sides of the gate valve channel are symmetrical. The structural length (the distance between the two connecting end faces of the shell) is relatively small. The sealing surface is easy to wear and tear, which affects the service life. When opening and closing, the two sealing surfaces of the gate plate and the valve seat rub against each other and slide, which is easy to produce abrasion and wear under the action of medium pressure, affecting the sealing performance and shortening the service life. The price is relatively expensive. There are more contact sealing surfaces, and the processing is relatively complicated, especially the sealing surface on the gate seat is not easy to process, and there are more parts. The shape is simple, the structure is short, the manufacturing process is good, and the scope of application is wide. The structure is compact, the valve has good rigidity, the channel is smooth, the flow resistance is small, and the sealing surface is made of stainless steel and cemented carbide, with a long service life and PTFE packing. Sealed and reliable. The operation is light and flexible.