Fully Welded Ball Valve Description
Fully welded ball valve is a high-performance valve with all parts connected by welding, its body adopts integral welded structure, no exposed threads or flanges, eliminating the risk of external leakage, and its core function is to control the opening and closing of pipeline fluids and regulation.
Structural components
- Valve body: welded from steel pipe as a whole to ensure structural integrity and sealing.
- Ball: the core opening and closing components, the surface of the mirror polishing to reduce friction.
- Valve seat: usually metal and polymer (such as PTFE) composite sealing ring, with spring to enhance the sealing adaptability.
- Stem: Double O-ring seal design, connecting the driver to the ball, rotating 90° to open and close during operation.
- Auxiliary components: limiters, gaskets, spring components, anti-static devices, etc.
commonly used materials
- Valve body: carbon steel (ST37, A106-B), stainless steel (304/316).
- Ball: stainless steel 304/316, part of the surface nickel plating to enhance corrosion resistance.
- Valve seat: metal matrix inlaid PTFE, RTFE, nylon and other polymer sealing materials.
- Valve stem and bearing: alloy material + PTFE coating, with self-lubricating ability.
Fully Welded Ball Valve Specification
- Nominal diameter: covering small and medium diameter to large diameter pipelines, commonly DN50～DN1200.
- Nominal pressure: up to 42MPa, adapt to high pressure environment.
- Connection: all-welded structure, without flange or threaded interface.
- Applicable temperature: -196℃～+550℃ (depending on the sealing material).
- Driving mode: manual, electric, pneumatic, hydraulic, support remote automation control.
Performance Advantages
- Non-leakage design: Integral welded structure eliminates external leakage points, suitable for flammable and explosive media.
- Reliable sealing: metal and polymer composite valve seat can adapt to pressure and temperature changes, maintaining long-term tightness.
- Corrosion and wear resistance: stainless steel ball and carbide valve seat to extend the service life, adapt to the media containing particles.
- Flexible operation: 90 ° rotation opening and closing, low torque, support for rapid response and automation control.
- Fire safety: graphite gasket and metal sealing structure in the fire can still maintain the seal.
Application Industries
- Energy industry: oil, natural gas long-distance pipelines and wellhead installations, coal gasification/liquefaction projects.
- Chemical industry: transport control of strong corrosive media (such as acid, alkali).
- Municipal and environmental protection: heating pipe network, sewage treatment system.
- Power and metallurgy: high temperature steam pipeline, industrial gas transmission.
GNEE Fully Welded Ball Valve
Fully Welded Ball Valve
Fully Welded Ball Valve
Fully Welded Ball Valve
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