A worm gear ball valve is an industrial valve that controls opening and closing through a worm gear and worm drive mechanism. It is mainly used for controlling media in pipeline systems of petroleum, natural gas, chemicals, and power systems. Its nominal pressure range is from 1.6 to 4.0 MPa, with a working temperature range of -29°C to 300°C. It is available in multiple bore sizes from DN25 to DN700, supports flange connections, and can be installed in any direction.

Structural Features

Utilizing a fixed ball structure and PTFE-modified sealing ring design, equipped with V-type stacked packing for A-grade anti-corrosion sealing. Valve body materials include WCB carbon steel, 304/316 stainless steel, and corrosion-resistant alloys, capable of handling strong corrosive media such as water, steam, oil, and nitric acid. The innovative worm gear lubrication system prevents medium contamination with an oil-trapping structure, supports online maintenance, and employs wedge-shaped sealing technology to ensure stability under pressure differential changes.

Application Scenarios

Suited for high-pressure, large-diameter pipelines, some models are compatible with manual, pneumatic, and electric operation. The fixed ball structure transmits pressure through bearings, reducing the medium pressure on the valve seat, featuring low torque and stable sealing performance, particularly suitable for high-pressure, large-diameter applications.