Clean or replace gate valve with full port ball valves or resilient wedge shutoff valves.
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。
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。