A fully welded ball valve is a type of industrial valve used to control the flow of liquids or gases through a pipeline. It is characterized by its construction, where the body and connections are made in a single welded piece, providing greater strength and integrity compared to valves with separate components.
Key features of a fully welded ball valve include:
Construction:The valve body, end connections, and other components are welded together as a single piece. This design eliminates the need for external flanges or joints, reducing potential leak paths and enhancing overall durability.
Ball Mechanism: The valve contains a hollow, perforated ball with a central bore. This ball can be rotated within the valve to control the flow. When the bore aligns with the pipeline, it allows fluid or gas to flow through; when the ball is rotated, the bore becomes perpendicular to the pipeline, blocking the flow.
Sealing Mechanism: Fully welded ball valves often have a resilient or elastomeric sealing material, such as PTFE (Teflon), around the ball. When the valve is closed, this material creates a tight seal against the bore of the valve body, preventing any leakage.
Durability and Reliability: The welded construction of the valve body reduces the number of potential leak points, enhancing the valve's reliability and durability. This design is particularly suited for applications involving high pressure, high temperature, and abrasive or corrosive fluids.
Low Maintenance: Because of their robust construction and fewer moving parts, fully welded ball valves generally require less maintenance compared to other types of valves.
Fully welded ball valves are commonly used in industries such as oil and gas, petrochemicals, chemical processing, water treatment, and more. They are often preferred for applications involving transportation of natural gas, oil, and other hazardous fluids, as they provide a high level of safety and reliability.
It's worth noting that while fully welded ball valves offer many advantages, they may be more expensive to manufacture and install initially, especially when compared to flanged or threaded valves. However, their long-term benefits in terms of reduced maintenance, improved safety, and extended service life often make them a cost-effective choice for critical applications.
|Fully Welded Ball Valves Specification|
|Size Range||1/2" up to 48"|
|Pressure||150 LBS up to 2500 LBS|
|Temperature||Up to 315ºC|
|Standards||API, BS, MSS, ANSI, ASME, ASTM, DIN|
|Seals||Seats: KELF, PTFE, NYLON, PEEK, VESPEL, METAL TC/CC COATING
Gaskets: SPIRAL WOUND, LIP SEAL
O-ring: HNBR, FKM, FFKM, NBR, EPDM, FEPM
|End connections:||BW, RF, FF, NPT, LG, RTJ, SW; CLAMPS|
|ANSI Class / Rating||150#, 300#, 600#, 900#, 1500#, 2500#|
|Industries and applications:||Natural Gas Processing, Offshore & Subsea, Pipelines|
|Main Standard||API 6D/ISO 14313|
|Application Standard||API 6D, ISO 14313, ASME VIII, ASME B16.34, ASME B16.10, ASME B16.5, NACE MR0175 and other diffused Industry standards|
|Special Test||EN 10204 Type 3.2 Material Certification by a Thirty Parts, API 641 Fugitive Emissions, PMI, NDE test.|
|Threaded End Fully Welded Ball Valve||$ 33.93 - $ 36|
|Stainless Steel Fully Welded Ball Valve Best Price||$ 47.60 - $ 39|
|Super Duplex Fully Welded Ball Valve||$ 28.18 - $ 49|
|Carbon Steel Socket Weld End Fully Welded Ball Valve||$ 74.95 - $ 77|
|Duplex Steel Fully Welded Ball Valve Price||$ 110.13 - $ 132|
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Oil & Gas Industry
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