Zhengguang’s Model WKM expanding gate valve features an expanding-type gate; a non-rising stem; and metal-to-metal seal technology. It provides safe, dependable service in applications from 2000 to 5000 psi, and is available in sizes between 2-1/16” and 5-1/8”, with either flange, threaded end connections. The Model WKM gate valve is suitable for all types of oilfield services, including sour gas.
Main features as below shows:
1、Metal-to-metal seal(gate-to-seat and seat-to-body).
2、Expanding gate design creates a positive mechanical seal across the seats with or without line pressure.
3、Full-bore, through-conduit gate-to-seat seal increases valve life by virtually eliminating turbulence and pressure drop.
4、During the process of on-off,there is a small gap between gate and seat,which provides reduced operating torque.
5、Seat’s auxiliary sealing ring can prevent impurities into sealing surface.
6、Stem packing can be re-energized with valve under pressure.
Specification: please contact me for details. Cause can not show here. Thanks.