Floating ball valve is one of the most widely used types of ball valves. Its core feature is that the sphere is in a "floating" state inside the valve chamber, and is only radially positioned through the upper and lower valve stems. Under the action of medium pressure, the sphere can produce small displacement and tightly press the sealing ring at the outlet end, thus achieving one-way sealing. The floating ball valve has a simple and compact structure, mainly composed of a valve body, a floating ball body, a valve seat (sealing ring), a valve stem, and a driving device. Its working principle is to operate the handle or actuator to drive the valve stem to rotate the ball 90 °, and use the opening or closing of the ball's through-hole to control the flow channel. The main advantages of the internal thread floating ball valve, external thread welded pipe floating ball valve, forged steel floating ball valve, flange floating ball valve, electric floating ball valve, pneumatic floating ball valve, turbine floating ball valve, clamp floating ball valve, insulation floating ball valve and other floating ball valves produced by Kaiweixi Valve include simple structure, small volume, light weight, low manufacturing cost, and low fluid resistance. It is usually suitable for medium and small caliber (DN ≤ 200mm) and medium and low pressure (such as Class 150/300) working conditions, and is widely used for cutting off water, oil, gas, and general corrosive media. It is an important basic switch valve in the fields of petroleum, chemical, urban water supply and drainage.

Fixed ball valve is the mainstream type of high-performance ball valve, whose core feature is that the ball is fixed in the valve body by two upper and lower valve stems, and the central rotation point is in a "fixed" state during operation, without displacement. The pre tightening force of the valve seat sealing ring and the pressure of the pipeline medium work together to achieve bidirectional sealing of the sphere, especially suitable for high-pressure, large-diameter, and critical cutoff conditions. The structure of a fixed ball valve is relatively complex, usually consisting of a valve body, a fixed sphere, a floating or elastic valve seat, a valve stem, and bearings. Its working principle is that during operation, the driving device drives the valve stem of the sphere to rotate 90 °, aligning or making the through-hole of the sphere perpendicular to the flow channel, achieving opening and closing. The significant advantages of fixed ball valves are small opening and closing torque, stable and reliable sealing performance, high pressure resistance level, and minimal wear on the sealing surface. Due to the fixed shape of the sphere, its operating torque is not significantly affected by changes in pipeline pressure, making it easy to equip with large-diameter pneumatic or electric actuators. The turbine fixed ball valve, electric fixed ball valve, pneumatic fixed ball valve, hydraulic fixed ball valve, stainless steel fixed ball valve, forged steel fixed ball valve, three-stage fixed ball valve, two-piece fixed ball valve and other fixed ball valves produced by Kaiweixi Valve are particularly suitable for high-pressure, large-diameter (such as DN200 or above), long-distance pipelines and demanding occasions requiring bidirectional sealing. They are key valves in oil and gas transportation, chemical, power and large industrial facilities.

An eccentric semi-ball valve is a high-performance valve designed for both regulation and shut-off. Its core design employs an eccentric rotation principle: there is an offset between the rotational center of the spherical disc and the geometric center of the seat seal ring. During opening and closing, the disc rapidly separates from or contacts the seat, achieving near-zero friction and extended wear life. The eccentric semi-ball valve primarily consists of a valve body, an eccentric spherical cap-shaped disc, a flexible or metal seat, a rotating shaft, and a drive mechanism. Its operation combines the rotational opening/closing of a ball valve with the wedge-like compression sealing characteristic of a gate valve, achieving a tight seal through the eccentric swing of the disc. Eccentric semi-ball valves offer significant advantages, including excellent regulating characteristics, high flow capacity (high Cv value), strong shearing force, and high sealing class (up to Class VI). Their unique eccentric structure avoids direct friction between sealing surfaces, making them particularly suitable for handling demanding media containing particles, fibers, slurries, or substances prone to crystallization. The eccentric semi-ball valves produced by KAIWEIXI Valve Group are widely used in harsh applications across industries such as power generation, metallurgy, papermaking, wastewater treatment, and coal chemical processing, handling demanding fluids like ash slurry, ore pulp, paper pulp, and wastewater.

The fully welded ball valve is a relatively new product in the pipeline valve sector. Its defining feature lies in its valve body, which is manufactured through integral casting or forging combined with full welding processes. All components are fused into a single unit via high-precision welding, ensuring a leak-free, high-strength, and maintenance-free valve body specifically designed for permanent burial or demanding operating conditions. The fully welded ball valves produced by Kaiweixi Valve Group typically employ either floating or fixed ball designs. The main structure consists of an integrally cast or forged valve body, a floating or fixed ball, a high-performance seat sealing system, an extended stem, and an anti-blowout mechanism. Internally, the design is compact, while externally, there are no visible bolted connections, eliminating potential leak points. The core purpose of this design is to ensure absolute safety and sealing integrity of pipeline systems under harsh conditions such as high pressure, large pressure differentials, extreme temperature fluctuations, and seismic events. These valves serve as critical pipeline equipment for long-distance transmission lines (oil, gas, refined products, natural gas), urban main distribution networks, nuclear power plants, and strategic infrastructure projects.

The global landscape of ball valve standards is diverse, with each standard exhibiting differences in design specifications, connection dimensions, pressure ratings, materials, and testing requirements to meet the needs of various regions and applications. API American Standard Ball Valves (API 6D/608): Identified by pressure classes (Class) and nominal pipe sizes (NPS), with flanges conforming to ASME B16.5. These standards impose extremely stringent requirements for design, fire safety, and sour service (NACE). They represent the globally dominant standards for the oil, gas, and long-distance pipeline sectors, signifying high reliability and safety. JIS Japanese Standard Ball Valves (JIS B2071): Utilize pressure ratings denoted by "K" (e.g., 10K, 20K) and nominal diameters (JIS size). DIN German Standard Ball Valves (DIN 3357): Employ DN (nominal diameter) and PN (pressure nominal) ratings, with flanges conforming to DIN series. GOST Russian Standard Ball Valves (GOST 24856, 5761): Also use DN and PN ratings; however, their dimensions, materials, and testing methods form a unique system with poor interchangeability with Western standards. BS British Standard Ball Valves (BS 5351, BS 6364): Historically based on imperial units, now largely harmonized with EN standards. BS 6364 is a globally recognized authoritative specification for low-temperature valves (including LNG applications). API standards dominate severe service conditions, while EN/ISO standards are progressively integrating various European national standards. GOST standards remain mandatory within the CIS (Commonwealth of Independent States) market.

A threaded ball valve (also known as a threaded connection ball valve) is a compact ball valve designed with internal or external threads at the valve ends for direct connection to pipelines. Its core characteristics include a small and compact structure, simple installation, and reliable sealing, eliminating the need for flanged connections. It is particularly suitable for small-diameter pipelines (typically DN ≤ 50 mm) in low to medium-pressure systems, serving as an on-off control valve for media flow.Threaded ball valves typically feature a one-piece, two-piece, or three-piece cast or forged valve body, with materials such as brass, stainless steel, or carbon steel being commonly used. They employ a floating ball design, with sealing rings often made of soft materials like PTFE to achieve effective sealing. Operation is primarily manual via a wrench or small actuator.The threaded ball valves produced by Kaiweixi Valve Group offer advantages such as:Compact size and lightweight design,Cost-effectiveness,Easy maintenance,Low flow resistance.Convenient installation and removal in confined spaces due to the threaded connection method.Threaded ball valves are widely used in applications such as:Instrumentation pipelines,Hydraulic and pneumatic systems,Small-scale equipment,Branch lines for water supply and drainage,HVAC systems in residential and general industrial fields.