No jamming even without lubrication, suitable for corrosive and low-boiling media.
Full sealing over a wide pressure and temperature range.
Fast operation (0.05–0.1s), no shock, ideal for automated systems.
Ball automatically positions at endpoints.
Reliable double-sided sealing.
Sealing surfaces isolated from media in full open/closed positions, preventing erosion.
Compact, lightweight, ideal for low-temperature systems.
Symmetric body withstands pipeline stress well.
Closure element resists high pressure differential.
All-welded valves can be buried, service life up to 30 years, perfect for oil & gas pipelines.
II. Disadvantages
Main seat material PTFE has low temperature resistance (max <180℃, recommended ≤120℃) and is sensitive to cold flow, which may reduce sealing reliability.
Poor regulating performance compared with globe valves, especially pneumatic/electric types.
III. Application Scope
Temperature is limited by PTFE, rubber or nylon seats.Plastic seats deform elastically to ensure tightness.Fireproof design is required for flammable and explosive services (oil, chemical, metallurgy).
Also suitable for lightweight, low-pressure, corrosive, cryogenic systems.Special degreased valves for oxygen pipelines; full-bore welded types for buried oil/gas pipelines.V-port ball valves for regulation; metal-sealed types for high temperatures (>200℃).
Tianjin Kaivis Valve Manufacturing Co., Ltd. (Tel: 022-60605968)is a professional valve manufacturer, supplier and exporter integrating R&D, production, installation, sales and wholesale.Products: check valves, butterfly valves, gate valves, ball valves, blind valves, ventilation butterfly valves and imported valves.
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