When the valve is closed, the sealing surface can only rely on media pressure to seal, which rely solely on media z41h wedge gate valve flange sealing surface pressure ram pressure to the other side of the seat to ensure sealing PZ41H slagging valve sealing surface, This is self-sealing. Most of the valve is sealed by force, that is, when the gate valve is closed, to rely on external pressure to force the gate valve to ensure the tightness of the sealing surface. Advantages: 1, small flow resistance. Body internal media channel is straight, medium into a linear flow, small flow resistance. 2, more effort when opening and closing. Compared with the shut-off valve is concerned PZ41H slagging gate manufacturers, because either open or closed, the direction of movement of the gate with the media are perpendicular to the direction of flow. 3, height, long opening and closing times. Gate opening and closing stroke of a larger drop is carried out by a screw. 4, easy to produce water hammer phenomenon. The reason is that long off time. Gate | Shandong valve | Everbright valve (certified merchants) provided by Valve Co., Ltd. Shandong China Everbright. Valve Co., Ltd. Shandong China Everbright (www.sdgdfm.com) located in Weifang City, Shandong Province, Bao Tong Street North Cravens District Makers Industrial Park. Scraps and development in the wave of market economy, the current Everbright valve has a high profile in the ball, and enjoy a good reputation. Everbright valve made of the whole network business alliance certification, marking our service and management level has reached a new height. Everbright valve staff willing to work with all people of insight and common development, for a better future.