Hard Sought Valve, Count on Zhengmao
Zhengmao Valve Co., Ltd., established in 1992, focuses on the R&D and manufacturing of industrial valves, including ball valve, gate valve, globe valve, check valve, butterfly valve, discharge valve and filters. Our products are widely applied in petrochemical, power, water supply, gas, and other industrial systems, supported by integrated production facilities and a complete quality control process. With strong technical capability and stable manufacturing capacity, we provide reliable solutions for global procurement partners.
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Discharge Ball Valve① Main material: carbon steel, stainless steel, alloy steelview more
② Nominal diameter: DN15 to DN250
③ Pressure range: 1.0MPa~10.0MPa
④ Operating temperature:... -
Floating Ball ValveMain body material: carbon steel, stainless steel, alloy steelview more
Nominal diameter: DN15~DN25
Pressure range: 1.0MPa~16.0Mpa
Working pressure: -29℃~+450℃
Drive Mode: manual,... -
Duplex Stainless Steel Floating Ball ValveAnyone in the chemical, petroleum, or metallurgy industry knows that if a valve fails, the production line stops, and safety is at risk. Zhengmao Valve's hard sealed ball valve is specifically...view more
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Cryogenic Floating Ball Valve1. Body Material: Low-temperature carbon steel, stainless steelview more
2. Nominal Diameter: DN15~DN1000
3. Pressure Range: 1.0MPa~10.0MPa
4. Operating Temperature: -196°C~+200°C
5.... -
Eccentric Half Ball ValveIn industrial pipeline systems, the stability and efficiency of valves directly determine production efficiency. The eccentric hemispherical valve launched by Zhengmao Valve has become the first...view more
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Forged Steel Wafer Ball ValveAnyone in industrial operations knows two big headaches with valves: tricky installation and leakage during use. Zhengmao Valve’s wafer ball valve solves both pain points perfectly. What’s more,...view more
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Short Pattern Ball ValveIn the field of industrial fluid control, the compactness and reliability of equipment often directly affect the overall system efficiency. The ultra-thin ball valve launched by Zhengmao Valve...view more
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Jacket Ball ValveIn industries sensitive to medium temperature such as chemical engineering, pharmaceuticals, and food processing, the thermal insulation and transportation efficiency of pipeline media are...view more
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Three Way Ball ValveEvery maintenance technician working with industrial pipelines knows that choosing the right valve saves half the trouble. This T-Type Three-Way Ball Valve from Zhengmao Valve is a "solid product"...view more
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Duplex SS Three Way Ball ValveAnyone in the industrial pipeline industry knows that if medium diversion gets stuck, the entire production line has to stop. This L-Type Three-Way Ball Valve from Zhengmao Valve is a "powerful...view more
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Electric Ball ValveAnyone in the industrial sector knows that "stability" and "accuracy" are more important than anything else when it comes to fluid control. The electric ball valve made by our Zhengmao Valve is...view more
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Threaded End Ball ValveMasters who do pipeline maintenance or equipment installation all know that choosing valves for small-diameter pipes focuses most on "compatibility" and "durability". The threaded ball valve from...view more
Why Choose Us?
Rich Experience
With over three decades of manufacturing experience and 78,600 m² of production area, we operate a full process line supported by our own precision casting base to ensure stable output and consistent quality.
Professional Team
Our workforce includes 510 employees, with 54 senior engineers and 136 technical specialists, enabling efficient product development and reliable engineering support for diverse project needs.
Advanced Equipment
We operate a dedicated testing and inspection center equipped for pressure, low-temperature, high-temperature, leakage, and material performance tests, helping ensure each valve meets required performance standards.
Complete Qualifications
The company is certified under ISO9001:2015 and holds the TS A1 license for pressure pipeline equipment, providing buyers with confidence in compliance and quality management.
Types of Ball Valve
Electric Ball Valve
Electric ball valve is a valve that rotates around the axis of the valve stem according to the movement of the valve disc. The change of valve seat port is in direct proportion to the valve disc travel. It is mainly used to cut off or connect the medium in the pipeline, and can also be used to regulate and control the fluid. It is a pipeline pressure element for industrial automation process control.
T Three Way Type Ball Valve
The "L" shape cut-out of the ball on an L-port valve sends fluid through 90 degrees from one port to another. The "T" shape cut-out of the ball on a T-port valve can also send from one port to another, but can also be rotated so that the T aligns with the "T" shape of the valve and all three ports are mixed.
Floating Ball Valve
Floating ball valves are operated by a shaft, or stem, attached to the top of the ball that turns it 90 degrees (a quarter turn). As the ball rotates, the port is covered or uncovered by the wall of the valve body, either releasing or halting the flow of media. The stem is attached loosely enough to the ball that, as the ball rotates on its axis, the pressure of the flow pushes the ball against its downstream seat, creating a tight seal.
Specifications of Ball Valve
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Valve Type |
2-Piece, 3-Piece, Full Port / Reduced Port |
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Size Range |
1/4" – 12" (DN8 – DN300) |
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Working Pressure |
PN16–PN63 / Class 150–Class 600 |
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Body Material |
Stainless Steel 304/316, Carbon Steel, Brass |
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Ball Material |
SS304 / SS316 / Chrome-Plated Carbon Steel |
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Seat Material |
PTFE, R-PTFE, PEEK |
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Connection Type |
Threaded (NPT/BSP), Flanged (ANSI/DIN/JIS), Welded (BW/SW) |
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Temperature Range |
–20°C to 200°C (depending on seat material) |
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Leakage Class |
ANSI/FCI 70-2 Class VI (Bubble-Tight Shutoff) |
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Design Standard |
API 608 / ISO 17292 |
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Testing Standard |
API 598 / EN12266-1 |
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Flow Pattern |
Full Bore / Reduced Bore |
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Operation Method |
Manual Lever, Gearbox, Pneumatic Actuator, Electric Actuator |
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Surface Finish |
Sandblasted / Polished / Anti-Corrosion Coating |
Advantages of Ball Valve
Leak-proof service
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Fast response time
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Rugged construction and long service life
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Low maintenance and compact design
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Cost-effective
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Body (or Housing): The primary structure of the valve, this robust enclosure contains and protects all internal parts. It's crafted from durable materials like metal, thermoplastic, or lined metal to withstand the demands of its operating environment. Inlet and outlet ports on the body allow for piping connections.
Ball: The central flow control element, the ball is a sphere with a central hole. Rotating the ball determines whether the bore aligns with the flow path or blocks it. Hollow balls have an internal cavity allowing for higher flow rates. So, increased turbulence and higher flow velocities are worth paying attention to.
Stem: The stem connecting the ball to the external control mechanism (usually a handle, but can be automated). Rotating the stem turns the ball, opening or closing the valve. The stem needs robust seals to prevent fluid leaks where it passes through the bonnet.
Seats: Soft rings surround the ball, providing a tight seal when the valve closes. Seats prevent leakage by firmly pressing against the ball.
Bonnet: An extension on the valve body protecting the stem and its seals. The bonnet might be bolted or welded to the body and is essential for high-pressure/temperature operations.

Applications of Ball Valve
Residential Applications
• Plumbing Systems: In residential plumbing, ball valves are commonly used to control the flow of water to various fixtures such as sinks, toilets, and showers. Their ability to provide a tight seal ensures there are no leaks, making them ideal for home use. Homeowners appreciate their easy visual confirmation of the valve's open or closed position and easy operation.
• Heating Systems: Ball valves also find application in house heating systems. They help regulate the flow of water or steam to radiators or underfloor heating systems. Their rugged design allows them handle high pressure ratings that often exist in those systems, thus ensuring reliability over long periods.
• Garden Irrigation: Ball valves control the flow of water into different zones within garden irrigation systems. This is to enable homeowners to efficiently manage watering schedules so that every part of the garden receives adequate amounts of moisture. The simplicity involved with manual ball valves makes them a common choice for this purpose.
Industrial Applications
• Oil and Gas Industry: In the petroleum industry, the job of regulating crude oil as well as natural gas flow through pipelines is handled by ball valves. The fact that they can function in such tough conditions and also be under high pressure makes them an integral part of this field. Ball valves guarantee that operations are done efficiently and safely, reducing chances of leaks which would destroy the entire pipeline system. Using either full bore or reduced bore designs enables different flow rate demands to be met.
• Chemical Processing: In chemical processing plants, the flow of different chemicals is controlled by ball valves. Their materials can be selected to be resistant to corrosion, thus enhancing their longevity and safety. Ball valve's accuracy and dependability aid in maintaining required flow rates and levels of pressure in chemical processes and reactions.
• Food and Beverage Industry: In the food and beverage industry, sanitary ball valves are utilized for handling the flow of liquids, such as water, juices and dairy products. These valves are made to meet stringent hygiene standards so as not to have any contamination. Their designs which are easy to clean and can provide a perfect tight seal make them ideal for use in food processing plants that require packaging. The use of these sanitary ball valves in such applications can also be beneficial in meeting rigorous health standards.
• Pharmaceutical Industry: Precise control of fluids in medicine manufacturing by the pharmaceutical industry depends on ball valves. The cleanliness standards that must be met for these valves are stringent to prevent contamination. They are reliable and easy to use and this makes them ideal for applications that need tight regulation of flow rates in different control applications.
• Water Treatment Plants: The flow of water through various stages of the treatment process in water purification plants is controlled by ball valves. They are responsible for regulating the inflow of raw water, managing flows through filtration systems, controlling addition of chemicals and ensuring an effective distribution of treated water. In order to maintain efficient and safe water treatment operations, they must have a capability to handle high pressures, tight sealing ability as well as prevention of undesired backflows.
Maintenance of Ball Valve
Longevity
Routine maintenance and quality checks are necessary to identify any issues with the ball valve, which, if missed, could lead to equipment failures, damaged parts, or injuries to workers. Ball valves that require few to no repairs and last longer help save money, prevent downtime, and keep production on schedule.
Security and safety
Ball valve maintenance experts can easily identify potential issues, lower the risk of emergency repairs, and prevent any hazardous leaks in the piping or processing system.
Reduced need for shutdowns
Certain steps in ball valve maintenance can be performed while the valve is in operation, which allows the system to run uninterrupted, reducing the need for costly shutdowns.
Cost savings
Regular inspection, maintenance, and replacement of ball valves on a projected schedule can reduce the need for unexpected repairs or replacements, thereby keeping more money in your pocket. Increased uptime means increased revenue, while fewer maintenance issues help save costs.
Our Certificates






Packing & Shipping
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Packaging: |
Wooden Cases, Cartons, Palletization. |
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Shipping: |
By logistics; by shipping; by air. |


FAQ
We're known as one of the most professional ball valve manufacturers and suppliers in China. With over 30 years' experience, we warmly welcome you to wholesale high quality ball valve made in China here from our factory. Contact us for more details.
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