Your Professional Valve Supplier
Sunlion Piping Engineering Co., Ltd. is a global supplier of piping systems and structural steel modules for energy, petrochemical, offshore, nuclear, and heavy industrial projects. With over 20 years of international project experience, Sunlion delivers vertically integrated solutions from raw materials to finished modules. The company serves leading EPC contractors and end users worldwide, providing compliant products, modular fabrication, inspection coordination, and OEM/ODM customization to support efficient and reliable project execution.
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![Carbon, Alloy and Stainless Steel Valves]()
Carbon, Alloy and Stainless Steel ValvesOur carbon, alloy and stainless steel valves types meet the requirements of all-round high-performance industrial valves, including ball, gate, globe, check, butterfly, control, safety valves, and
why choose us
Quality Control
All products are manufactured to recognized standards such as ASME, DIN, GB, and JIS and undergo coordinated inspection and testing by third-party organizations such as SGS to ensure traceability and consistent quality.
Customization Services
We offer OEM and ODM services, tailored to project requirements, including material grades, dimensional tolerances, marking systems, packaging methods, and documentation, to meet both standardized and project-specific engineering needs.
Integrated Supply Chain
We manage the entire supply chain, from steel pipe sourcing to prefabricated piping and structural modules. This integrated model simplifies procurement coordination, improves schedule control efficiency, and minimizes interface risks between multiple suppliers in complex projects.
Sales Markets
With over two decades of experience executing international projects, we have delivered materials and modules to projects in the Middle East, Australia, the Americas, Africa, and Europe, supporting EPC general contractors under various technical standards and logistical conditions.
Specification
|
Specification Item |
Details |
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Product Name |
Carbon, Alloy & Stainless Steel Valves |
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Valve Types |
Gate, Globe, Check, Ball, Butterfly, and others |
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Materials |
Carbon steel, low alloy steel, stainless steel, duplex/super duplex |
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Standards |
ASME B16.34, API 6D/600/603, DIN, JIS |
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Size Range |
½″ – 72″ (nominal) |
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Pressure Rating |
Class 150 – Class 2500 (typical) |
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Temperature Range |
Low to high depending on material selection |
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End Connections |
Flanged, butt weld, socket weld, threaded |
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Sealing Types |
Metal seat, soft seat, resilient seat |
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Typical Use |
Oil & gas, petrochemical, power, water and industrial systems |
Advantages Of Valve
Fluid resistance
Valves offer a very small fluid resistance. The minimal fluid resistance is due to the straight inner media channel of the body which allows the medium to flow directly through the valve without changing direction. As such, the flow's path is unobstructed.
Energy-efficiency
Valves are an energy-efficient valve option, as the movement direction or ram is perpendicular to the media flow direction. As a result, less power is consumed when opening or closing the valves in comparison to globe valves. Due to their energy-efficiency, they help reduce total ownership cost.
Simple body
Valves are composed of a relatively simple body. Therefore, they are easier to operate compared to isolation valves with more complex designs.
Dual flow direction
Valves have the capacity to be used in any direction in the circuit. In other words, their media flow is unobstructed for all directions of the valve body and they aren't subject to the medium's directional flow. This makes them ideal for use in pipelines where the flow direction may change depending on the medium.
Minimal erosion
In comparison to other valve options, valves typically experience less erosion on their sealing surface when they are fully open. This minimal erosion is largely attributed to the valve's tight seal functioning.
Minimum pressure loss
Due to the laminar flow that they provide, the pressure loss of valve is minimal. It's always helpful when pressure loss can be mitigated.
Types of Valve
Butterfly Valves
Butterfly valve is also part of the quarter turn valve family. What makes butterfly valve distinct from the other valves is the flat to a concave disc that attaches to the valve stem. Positioned in the middle of the valve with the stem bored into it or attached at one side, the disc blocks media flow when the valve is closed. The stem adds support to the disc. This design allows butterfly valve to throttle when there is incremental opening of the valve.
Ball Valves
Ball valve is part of the quarter turn valve family. The distinct feature of a ball valve is its hollow ball-shaped disc that acts to stop or start media flow. The ball disc is one of the quickest valves because it only needs a quarter turn to open or close.
Gate Valves
Gate valve is another member of shut off/on valve family. What makes this unique is its disc movement is linear. The disc is either gate or wedge-shaped, which has an effective shut-off and on mechanism. Gate valve is primarily suited for isolation.
Check Valves
Check valve relies on internal pressure, instead of outside action, for opening and closing. Also known as non-return valve, prevention of backflow is the main function of a check valve.
Globe Valve
Globe valve looks like a globe with a plug-type disc. It is part of the linear motion valve family. Aside from being a great turn off/on valve, globe valve also has great throttling capabilities.
Needle Valve
Needle valve gains its name from the needle-like shape of its disc. Its mechanism acts similarly to that of globe valve. Needle valve provides more precision and control in smaller piping systems. Still part of the quarter turn family, needle valve functions better in low flow rates.
Pinch Valve
Also called the clamp valve, pinch valve is another valve for stop/start and throttling. Pinch valve belongs to the linear motion valve family. The linear motion allows unobstructed flow of media. The pinching mechanism of the pinch tube inside the valve acts to control the fluid flow.
Plug Valve
Plug valve belongs to the quarter turn valve family. The disc acts as a bubble tight shut-off and on plug or cylinder. Aptly named as the plug valve due to its tapered end. Its closing and opening mechanism is similar to that of a ball valve.
Pressure Relief Valve
Pressure relief valve refers to a valve that releases or limits pressure from the pipelines to maintain the pressure balance and to avoid build-up. It is sometimes mistakenly called the pressure safety valve.
Key Components of Valve
Disc
The disc is the primary component that controls the flow. It rotates on a shaft, allowing it to either open or close the flow path.
Shaft
The shaft connects the disc to the actuator (in actuated valves) and provides support for the disc's rotation. It is usually located at the center of the valve body.
Body
The body houses the disc and the shaft. It's designed to endure high pressure and is constructed from materials like cast iron, stainless steel, or plastic, depending on the service conditions.
Seat
The seat is crucial for ensuring a leak-free seal when the valve is closed. It provides a surface for the disc to rest against, preventing any backflow. Seats can be made from various materials, depending on the fluid passing through the valve.
Typical Applications of Valve
Within the oil and gas industry, valves are utilized in the operations of production, distribution, refining, and exploration. Through storage tanks, processing facilities, and pipelines, they regulate the flow of refined goods, natural gas, and crude oil.
In the chemical industry, to control the flow of various chemicals, acids, and solvents, valves are crucial in chemical processing facilities. They guarantee effectiveness and safety when working with caustic and dangerous materials.
In water treatment plants, valves are used to regulate the flow of wastewater, chemicals, and water. They support procedures including clean water distribution, disinfection, and filtration.
In power generation plants steam, water, and other fluid flows are managed by valves in power plants, which include nuclear, thermal, and hydroelectric plants. They are essential for controlling flow rates, pressure, and temperature in the systems that generate electricity.
In the mining industry, valves are essential for managing the flow of chemicals, slurries, and water used in the extraction, processing, and transportation of minerals. They facilitate downtime reduction and production optimization.
In the food and beverage industry, to regulate the flow of materials, drinks, and cleaning supplies, food processing facilities use valves. Valves guarantee accuracy, hygienic practices, and adherence to food safety laws.
In the pharmaceutical industry, by controlling the flow of chemicals, solvents, and gases, valves are essential to the production processes. They guarantee sterility, precision, and adherence to strict quality requirements.
Valves are used in heating, ventilation, and air conditioning systems for controlling the flow of air, water, and refrigerants. They help in maintaining comfort levels and energy efficiency in buildings.
In the automotive manufacturing process, valves are used to regulate the flow of fluids in engines and other automotive systems, including fuel, oil, and coolant.
Customization Services
We offer customized valve manufacturing solutions to meet your needs. Key customization options include:
|
Material |
Customizable |
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Valve Type |
Customizable |
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Pressure Rating |
Customizable |
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Actuation Method |
Customizable |
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Size & Dimensions |
Customizable |
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Our customization capabilities extend beyond the options listed above. Should you have additional requirements, we are able to make flexible adjustments in accordance with your specific needs and circumstances. |
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Packaging and Shipping
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Packaging |
Wooden crates or cardboard boxes |
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Transportation methods |
Road transport, rail transport, sea transport |
FAQ
As one of the most professional valve manufacturers and suppliers in China, we offer a wide range of products with superior quality. Please rest assured to wholesale high-grade valve at competitive price from our factory. Contact us for more details.
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