Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

Q11F Brass Ball Valve
Q11F Threaded Brass Ball Valve
Q21F Female & Male Thread Brass Ball Valve
Q11F NPT One-Piece Ball Valve
Q11F NPT Two-Piece Ball Valve
Q21F Female & Male Thread Ball Valve
Q11F NPT Three-Piece Ball Valve (with Lock)
Q21F Three-Piece Ball Valve with External Thread and Welding Pipe
Q11H Forged Steel NPT Three-Piece Ball Valve
Q11F Square Three-Piece Ball Valve
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Threaded Ball Valve

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.

Q11F Brass Ball Valve

Model：
Q11F-16T/Q11F-25T/Q11F-10T
Specification：
DN15-DN50
Pressure：
PN10,PN16,PN25
Material：
brass

Q11F Brass Ball Valve OverviewThe Q11F brass ball valve is a compact ball valve featuring a brass body and internal thread connections. It is available in one‑piece or split‑body designs, operating via a 90° stem rotation to quickly open or close the ball. The valve body is made of forged brass, offering excellent corrosion resistance and mechanical strength, while the seat is made of soft sealing materials such as PTFE (polytetrafluoroethylene) to ensure reliable sealing.With its simple structure, small size, and light weight, this valve is suitable for non‑corrosive media such as water, oil, and air, typically operating at pressures ranging from PN16 to PN40. It is widely used in building water supply and drainage systems, HVAC systems, small‑scale equipment, and general industrial pipelines, serving as an economical and practical basic fluid‑control valve.Q11F Brass Ball Valve Product Image

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Q11F Threaded Brass Ball Valve

Model：
Q11F-16T/Q11F-25T/Q11F-40T
Specification：
DN8-DN50
Pressure：
PN16、PN25、PN40
Material：
Brass

Q11F Threaded Brass Ball Valve OverviewThe Q11F threaded Brass ball valve is a brass globe valve that uses threaded connections to quickly open and close by rotating the valve stem to drive the ball to move 90 degrees. The valve body is made of forged brass with a compact structure, and the sealing surface is usually covered with polytetrafluoroethylene (PTFE) to ensure good sealing performance. The working temperature range of this valve is generally -20 ℃ to 150 ℃, suitable for pipeline systems with nominal pressure PN16 and below. It is widely used for controlling non corrosive fluid media such as water, oil, and gas, and is commonly found in building water supply and drainage, HVAC, household appliances, and general industrial equipment pipelines.Q11F Threaded Brass Ball Valve Product Image

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Q21F Female & Male Thread Brass Ball Valve

Model：
Q21F-16T
Specification：
DN15-DN25
Pressure：
PN16
Material：
brass

Q21F Female & Male Thread Brass Ball Valve OverviewThe Q21F Female & Male Thread Brass Ball Valve is a compact ball valve designed with combined female and male thread connections. Its body and key components are constructed from forged brass. One end of the valve features external threads (e.g., G-thread), while the opposite end has internal threads, facilitating convenient connection and adaptation between pipelines or equipment with different interface standards. A 90-degree rotation of the stem drives the ball to open or close the flow path quickly. The valve seat, made of soft sealing materials like PTFE (Polytetrafluoroethylene), ensures reliable sealing. Characterized by its compact and refined design, this valve integrates both connection/adaptation and shut-off functions. It is suitable for non-corrosive media such as water, oil, and air, with typical working pressures ranging from PN16 to PN40. Widely used in HVAC systems, small-scale equipment, instrumentation, and domestic water supply applications, it serves as a versatile pipeline connection and control component.Q21F Female & Male Thread Brass Ball Valve Product Image

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Q11F NPT One-Piece Ball Valve

Model：
Q11F-16/Q11F-25/Q11F-40/Q11F-16C/Q11F-25C/Q11F-40C/Q11F-16P/Q11F-25P/Q11F-40P/Q11F-10/Q11F-25C
Specification：
DN6-DN50
Pressure：
PN10-PN64
Material：
stainless steel

Q11F NPT One-Piece Ball Valve OverviewThe Q11F NPT One-Piece Ball Valve s is a compact ball valve featuring an integrated body structure and internal thread connections. The valve body is typically machined from a single piece of brass or stainless steel. With its one-piece molded design, the valve offers a simple yet robust structure. It achieves quick 90-degree on/off operation by rotating the stem to drive the ball, while the seat is made of soft sealing materials such as polytetrafluoroethylene (PTFE) to ensure reliable sealing. The integrated structure eliminates the risk of connection leaks common in split-type valves. Its small size and excellent sealing performance make it suitable for non‑corrosive media such as water, oil, and air. The typical working pressure ranges from PN16 to PN40. Widely used in small equipment, instrument measurement, pneumatic systems, and general industrial pipelines, it is an economical and reliable miniature shut‑off valve.Q11F NPT One-Piece Ball Valve Product Image

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Q11F NPT Two-Piece Ball Valve

Model：
Q11F-16/Q11F-25/Q11F-40/Q11F-16C/Q11F-25C/Q11F-40C/Q11F-16P/Q11F-25P/Q11F-40P/Q11F-10/Q11F-25C
Specification：
1/4”-4”
Pressure：
1.0Mpa-4.0Mpa
Material：
stainless steel

Q11F NPT Two-Piece Ball Valve OverviewThe Q11F NPT Two-Piece Ball Valve is a compact ball valve featuring a two-piece split-body structure with internal thread connections. The valve body is typically made of brass or stainless steel. Constructed from two bolted-together sections, it allows for easy disassembly, maintenance, and inspection. The valve operates via a 90-degree rotation of the stem to quickly open or close the flow, while a soft sealing material such as PTFE (polytetrafluoroethylene) ensures reliable sealing.With its simple structure, small size, and light weight, it is suitable for non-corrosive media such as water, oil, and air, and typically operates at pressures ranging from PN16 to PN40. Widely used in instrumentation, small-scale equipment, pneumatic pipelines, and general industrial fluid control systems, it serves as an economical and practical fundamental shut-off valve.Q11F NPT Two-Piece Ball Valve Product Image

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Q21F Female & Male Thread Ball Valve

Model：
Q21F-16P
Specification：
DN15-DN50
Pressure：
PN16
Material：
stainless steel

Q21F Female & Male Thread Ball Valve OverviewThe Q21F Female & Male Thread Ball Valve is a compact ball valve featuring a combined female and male thread connection design. The valve body is typically constructed from brass or stainless steel. With external threads on one end (e.g., G-thread) and internal threads on the other, it can directly connect pipelines or equipment with different interface standards, eliminating the need for additional fittings. The valve operates via a 90-degree rotation of the stem to quickly open or close the ball. A PTFE (or similar soft seal) seat ensures reliable sealing. Combining both adaptation and shut-off functions in one compact unit, this valve offers a small footprint and flexible installation. It is suitable for non-corrosive media such as water, oil, and air, and is widely used in HVAC systems, instrumentation, small-scale equipment, and residential plumbing.Q21F Female & Male Thread Ball Valve Product Image

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Q11F NPT Three-Piece Ball Valve (with Lock)

Model：
Q11F-16C/Q11F-25C/Q11F-40C/Q11F-64C/Q11F-16P/Q11F-25P/Q11F-40P/Q11F-64P
Specification：
DN6-DN100
Pressure：
PN16-PN64
Material：
stainless steel

Q11F Internal Thread (Lockable) Three-Piece Ball Valve – OverviewThe Q11F internal thread (lockable) three-piece ball valve is a brass or stainless steel three-piece ball valve integrated with a locking mechanism and designed for internal thread connection. The valve body consists of two end caps and a central body section bolted together, offering robust construction and easy disassembly. A dedicated lock hole is provided at the stem or handle, allowing the use of a padlock or seal.The valve operates by rotating the stem to drive the ball 90 degrees for opening or closing, with the seat made from soft sealing materials such as PTFE (polytetrafluoroethylene). This design not only provides reliable shut-off functionality but also incorporates a physical locking mechanism to prevent unauthorized or accidental operation.Suitable for non-corrosive media such as water, oil, and gas, it is commonly used in instrumentation, water/gas supply systems, equipment pipelines, and public facilities where safety management or process control is required.Q11F NPT Three-Piece Ball Valve (with Lock) Product Image

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Q21F Three-Piece Ball Valve with External Thread and Welding Pipe

Model：
Q21F-16P/Q21F-25P/Q21F-40P/Q21F-64P
Specification：
DN10-DN25
Pressure：
PN16,PN25,PN40,PN64
Material：
stainless steel

Q21F Three-Piece Ball Valve with External Thread and Welding Pipe Overview The Q21F Three-Piece Ball Valve with External Thread and Welding Pipe is a compact ball valve featuring a three-piece split-body design that combines both external thread and welded pipe connection functions. The valve body is typically made of brass or stainless steel, with one end designed as a standard external thread (e.g., G-thread) and the other as a welding pipe interface. The middle valve body is connected to both ends via bolts to form the three-piece structure. The valve operates by rotating the stem to drive the ball for 90-degree opening and closing, and the seat employs soft sealing materials such as PTFE (Polytetrafluoroethylene). This design enables flexible adaptation between threaded and welded connections, making it suitable for pipeline systems with space constraints or requiring hybrid connection methods. It is commonly used in instrumentation, small-scale equipment, pneumatic systems, and retrofit projects. Q21F Three-Piece Ball Valve with External Thread and Welding Pipe Product Image

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Q11H Forged Steel NPT Three-Piece Ball Valve

Model：
Q11H-16C/Q11H-25C/Q11H-40C/Q11H-16P/Q11H-25P/Q11H-40P
Specification：
DN10-DN50
Pressure：
1.0Mpa-6.4Mpa
Material：
forged steel 、forged stainless steel

Q11H Forged Steel NPT Three-Piece Ball Valve Overview The Q11H Forged Steel NPT Three-Piece Ball Valve is a specialized ball valve designed for high-pressure and high-temperature applications. It features a forged steel body (typically made of materials such as A105) and NPT connections. The valve employs a three-piece bolted structure, ensuring excellent mechanical strength and reliable sealing performance. Designed with metal hard-sealing technology, it operates through a 90-degree rotation of the stem to drive a precisely machined ball, providing stable sealing under high-pressure differentials and elevated temperatures. This valve is engineered for demanding conditions in industries such as petroleum, chemical, and power plants, and is suitable for media including water, steam, oil, and corrosive fluids. It serves as a critical device for reliable shut-off in high-pressure, small-diameter pipeline systems.Q11H Forged Steel NPT Three-Piece Ball Valve

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Q11F Square Three-Piece Ball Valve

Model：
Q11F-16P/Q11F-25P/Q11F-40P
Specification：
DN15-DN200
Pressure：
PN16，PN25,PN40
Material：
forged steel,forged stainless steel

Q11F Square Three-Piece Ball Valve OverviewThe Q11F Square Three-Piece Ball Valve is a ball valve featuring a three-piece split-body design with a square-shaped valve body and internal thread connections. The valve body and connecting components are typically made of brass or stainless steel, consisting of two end caps and a central valve body bolted together to form a stable structure that facilitates easy disassembly and maintenance.The valve operates by rotating the stem to drive the ball 90 degrees for opening or closing, while the seat seal is made of soft materials such as PTFE (polytetrafluoroethylene) to ensure reliable sealing. Known for its distinctive square appearance, compact split-body design, and high cost-effectiveness, this valve is suitable for non-corrosive media such as water, oil, and gas, with a typical working pressure range of PN16 to PN40. It is widely used in instrumentation, small equipment, water/gas supply systems, pneumatic systems, and general industrial pipelines.Q11F Square Three-Piece Ball Valve Product Image

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Product classification of Kaiweixi

KAI WEI XI CHAN PIN FEN LEI

Q11F Brass Ball Valve

Q11F Threaded Brass Ball Valve

Q21F Female & Male Thread Brass Ball Valve

Q11F NPT One-Piece Ball Valve

Q11F NPT Two-Piece Ball Valve

Q21F Female & Male Thread Ball Valve

Q11F NPT Three-Piece Ball Valve (with Lock)

Q21F Three-Piece Ball Valve with External Thread and Welding Pipe

Q11H Forged Steel NPT Three-Piece Ball Valve

Q11F Square Three-Piece Ball Valve

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