Clean or replace gate valve with full port ball valves or resilient wedge shutoff valves 1用全流道球阀或弹性楔板关闭阀清洗或更换闸阀。
2.
Gate valves are offered in two designs : parallel disc and flexible wedge . parallel disc are position seated ; flexible wedge are torque seated when closing 我们提供的闸阀的结构形式具有两种：平行阀瓣和弹性楔形闸板。平行阀瓣为定位阀座密封；弹性楔形闸板在关闭时则是扭矩阀座密封。
