TIANYU DN100 PN16 CF8 Electric Actuator Motorized Ball Valve: Stainless Steel Flanged Full-Port Flow Control Solution for Industrial Media with Automated Precision and Reliable Sealing

I. Product Overview

TIANYU DN100 PN16 CF8 Electric Actuator Motorized Ball Valve is a high-performance flow control device engineered for precise and automated management of industrial media. Constructed from CF8 stainless steel (equivalent to 304 stainless steel), this valve combines the robustness of a flanged ball valve with the efficiency of an electric actuator, delivering reliable on-off and modulating control across diverse applications. Designed for a nominal diameter of DN100 (4 inches) and a pressure rating of PN16 (1.6MPa), it adheres to international standards such as API 6D, ASME B16.34, and ASME B16.5, ensuring compatibility with global industrial pipelines.

The valve’s electric actuator enables remote and automated operation, making it ideal for scenarios where manual intervention is impractical or inefficient—such as large-scale industrial plants, chemical processing facilities, and energy infrastructure. Its CF8 stainless steel construction provides exceptional corrosion resistance, while the full-port design minimizes pressure drop, ensuring efficient media transfer. Whether handling water, oil, gas, or mild chemicals, this valve embodies reliability, precision, and durability, positioning it as a trusted choice for demanding industrial flow control needs.

II. Key Attribute Specifications

A. Dimensional & Pressure-Temperature Parameters

Nominal Diameter (Port Size): DN100 (4 inches), a widely utilized size in industrial pipelines that balances flow capacity and installation flexibility. The full-port design ensures the ball’s bore matches the pipeline’s inner diameter, optimizing flow efficiency—capable of handling up to 200 m³/h of water at 20℃, suitable for medium-scale industrial processes and distribution systems.
Pressure Rating: PN16 (1.6MPa), aligning with industrial medium-pressure requirements. Hydrostatic testing follows API 598 standards, with the shell tested at 1.5×rated pressure (2.4MPa) and the seat at 1.1×rated pressure (1.76MPa) to verify structural integrity and leak-tight performance.
Temperature Range: -20℃ to 200℃, enabled by CF8 stainless steel’s thermal stability and compatible sealing materials. This range covers ambient, moderately heated, and low-temperature industrial media, from chilled water to hot oil.

B. Material Composition

Valve Body & Ball: CF8 stainless steel (ASTM A351), featuring 18-20% chromium and 8-10.5% nickel. This alloy offers excellent corrosion resistance to water, steam, and mild chemicals, while maintaining mechanical strength (tensile strength ≥515MPa, yield strength ≥205MPa) across the operating temperature range.
Valve Stem: 2Cr13 stainless steel, precision-machined for smooth operation and resistance to wear and corrosion. Equipped with an anti-blowout design to prevent ejection under pressure, enhancing safety.
Sealing System: Reinforced PTFE (polytetrafluoroethylene) seats, providing chemical inertness and bubble-tight sealing (ANSI/FCI Class VI). PTFE operates reliably from -20℃ to 200℃, ensuring consistent performance.
Electric Actuator:
- Housing: Aluminum alloy with epoxy powder coating, rated IP65 for dust and water resistance—suitable for industrial environments.
- Motor & Gears: High-efficiency electric motor with precision-engineered gears, delivering torque tailored to the valve’s size for smooth operation.
- Control & Feedback: Options include on-off control, modulating control via 4-20mA signal, and position feedback for integration with SCADA/DCS systems.

C. Connection & Operational Features

Connection Type: Flanged (Raised Face, RF), complying with ASME B16.5 (Class 150). The RF flange design ensures secure gasket sealing, compatible with spiral-wound or non-asbestos gaskets for various media and temperature conditions.
Operation Mode: Electric actuation with manual override. The actuator provides 90° rotation for on-off control, with adjustable speed and torque settings. Manual override enables operation during power outages, ensuring process continuity.
Safety & Control Features: Built-in thermal overload protection to prevent motor burnout; optional explosion-proof certification for hazardous environments; and position indicators for visual status confirmation.

D. Certifications & Compliance

Industry Standards: API 6D, ASME B16.34, ASME B16.5, API 598.
Quality Certifications: ISO 9001, CE, ensuring adherence to global quality and safety norms.
Material Certifications: ASTM A351 (CF8), verifying material composition and performance.

III. Feature Description

A. Electric Actuator: Precision Automation for Industrial Efficiency

The integrated electric actuator enables automated and remote control, eliminating manual labor and reducing operational errors. In chemical processing plants, for example, the valve can be programmed to open/close based on process parameters like fluid pressure or temperature, ensuring precise control without human intervention.

The actuator’s torque output is matched to the valve’s requirements, ensuring smooth operation of the DN100 PN16 valve. Adjustable speed settings (from slow to fast actuation) allow customization to match process dynamics—fast actuation for emergency shut-offs and slow actuation for controlled flow modulation. Position feedback capabilities (e.g., 4-20mA signal) enable real-time monitoring, critical for process optimization in complex industrial systems.

B. CF8 Stainless Steel Construction: Corrosion Resistance & Durability

CF8 stainless steel (304 equivalent) is selected for its exceptional corrosion resistance and mechanical properties, making it ideal for industrial environments. In applications involving water, steam, or mild chemicals, the valve’s body and ball resist pitting, crevice corrosion, and general corrosion, extending service life by 2-3 times compared to carbon steel valves.

In seawater desalination plants, for instance, CF8 valves maintain integrity for over 10 years, while carbon steel valves corrode within 2-3 years. The material’s thermal stability also ensures consistent performance at temperatures up to 200℃, suitable for hot oil or steam applications.

C. Full-Port Ball Design: Efficient Flow & Reduced Pressure Drop

The full-port design ensures the ball’s bore diameter matches the pipeline’s inner diameter, minimizing pressure drop across the valve. This is particularly beneficial for energy-intensive applications like pumping systems, where reducing pressure loss directly translates to energy savings. For a DN100 pipeline, the full-port design reduces pressure drop by up to 30% compared to a reduced-port valve, lowering pump energy consumption significantly.

Additionally, the full-port design prevents media buildup and clogging, a critical advantage for handling fluids with suspended particles or viscous media. In wastewater treatment plants, this feature ensures reliable operation without frequent maintenance or cleaning.

D. Reinforced PTFE Sealing: Bubble-Tight Performance

The reinforced PTFE seats deliver ANSI/FCI Class VI leakage performance, meaning “bubble-tight” sealing with virtually no media loss. PTFE’s chemical inertness ensures compatibility with a wide range of media, including acids, alkalis, oils, and solvents, making the valve suitable for diverse chemical processing applications.

Even under cyclic operation and temperature fluctuations, the PTFE seals maintain their elasticity and sealing integrity. In petrochemical plants handling refined oil, the seals show no measurable leakage after 10,000 cycles, demonstrating long-term reliability.

E. Manual Override & Safety Features: Operational Reliability

The manual override feature ensures the valve can be operated during power outages or actuator failures—a critical safety measure for process-critical applications. In power plant cooling water systems, for example, operators can manually close the valve to prevent overheating during electrical outages.

Built-in thermal overload protection prevents the actuator motor from burning out due to excessive torque (e.g., if the valve jams), while optional explosion-proof certification allows use in hazardous environments such as oil refineries or gas processing plants.

IV. Manufacturing Processes

API 6D High-Pressure Stainless Steel Ball Valve Manufacturer

A. Material Inspection & Preparation

CF8 Stainless Steel Verification: Raw material billets undergo spectral analysis to confirm chemical composition (Cr: 18-20%, Ni: 8-10.5%) and ultrasonic testing to detect internal defects. Mechanical testing (tensile, impact) ensures compliance with ASTM A351 standards.
Seal Material Testing: PTFE seals are tested for compression set, tensile strength, and chemical resistance at operational temperatures (-20℃ to 200℃) to ensure long-term performance.

B. Valve Body & Ball Machining

Casting: The valve body and ball are produced via investment casting for CF8 stainless steel, ensuring dimensional accuracy and a smooth surface finish. Castings are heat-treated (solution annealing) to restore corrosion resistance and mechanical properties.
Machining: CNC turning and milling centers shape the body, ball, and flange faces. Flange faces are machined to flatness tolerance ≤0.05mm/m and surface finish Ra ≤3.2μm for proper gasket seating. The ball is lapped to a surface roughness of Ra ≤0.8μm to ensure uniform seal contact.

C. Actuator Integration & Assembly

Actuator Assembly: The electric actuator’s motor, gears, and control board are assembled in a cleanroom environment. Gears are lubricated with synthetic grease for quiet operation and long life.
Valve-Actuator Integration: The actuator is mounted to the valve via an ISO 5211 adapter flange. The drive shaft is connected to the valve stem, with laser alignment to ensure coaxiality and smooth operation.
Seal Installation: PTFE seals are precision-cut and installed into the valve body, with spring-loading to compensate for thermal expansion and wear.

D. Quality Testing & Certification

Hydrostatic Testing: The valve undergoes shell and seat tests at 1.5× and 1.1× rated pressure, respectively, with no leakage allowed.
Operational Testing: The valve is cycled 100 times to verify smooth operation, torque consistency, and seal integrity. The actuator’s thermal overload protection is tested by simulating excessive torque.
Certification: Each valve is accompanied by material test reports, hydrostatic test reports, and compliance certificates (ISO 9001, CE, API 6D).

V. Product Advantages

A. Automated Precision & Efficiency

Electric actuation enables precise control and automation, reducing labor costs by 50-70% compared to manual valves. In large-scale manufacturing facilities, automated valves integrated with SCADA systems reduce the need for on-site operators, improving efficiency and safety.

B. Corrosion Resistance & Longevity

CF8 stainless steel’s resistance to corrosion and wear extends the valve’s service life to 10+ years in most industrial applications, outlasting carbon steel valves by 3-5 times. This reduces replacement costs and unplanned downtime.

C. Energy Savings via Full-Port Design

The full-port design minimizes pressure drop, lowering pump energy consumption by up to 30%. For facilities with multiple DN100 valves, this translates to significant annual energy savings.

D. Versatile Media Compatibility

From water and steam to mild chemicals and oils, the valve’s CF8 construction and PTFE seals ensure compatibility with a wide range of media, making it a versatile choice for diverse industries.

E. Safety & Reliability

Manual override, thermal overload protection, and optional explosion-proof features enhance operational safety, while rigorous testing and certification ensure reliable performance in critical applications.

VI. Product Applications

A. Chemical Processing

Chemical Transfer Lines: DN100 PN16 valves control the flow of acids, alkalis, and solvents. CF8 stainless steel resists chemical corrosion, while PTFE seals prevent media leakage.
Reactor Feed Systems: Automated control enables precise dosing of reactants, improving process efficiency and product quality.

B. Energy & Power Generation

Steam & Condensate Lines: The valve handles saturated steam (up to 200℃) in power plant auxiliary systems. CF8’s thermal stability and PTFE’s high-temperature performance ensure reliable operation.
Fuel Oil Systems: In diesel or heavy oil pipelines, the valve’s corrosion resistance and tight sealing prevent fuel leakage and contamination.

C. Water & Wastewater Treatment

Potable Water Distribution: The valve regulates flow in municipal water mains, with CF8 ensuring water quality and PTFE providing leak-tight sealing.
Wastewater Treatment: Handles sludge and treated water, with the full-port design preventing clogging from solids.

D. Petrochemical & Oil & Gas

Refined Products Pipelines: Controls the flow of gasoline, diesel, and lubricants. CF8 resists hydrocarbon corrosion, and the electric actuator enables remote monitoring in pipeline networks.
Gas Distribution: Manages natural gas flow in industrial and commercial systems, with tight sealing to prevent gas leakage.

E. Food & Beverage

Process Water & CIP Systems: The valve’s sanitary design (CF8 stainless steel, smooth surfaces) meets food-grade requirements for cleaning and process water.

TIANYU DN100 PN16 CF8 Electric Actuator Motorized Ball Valve delivers automated precision, CF8 corrosion resistance, full-port efficiency, and ANSI Class VI sealing. Compliant with API 6D/ASME standards, it serves chemical, energy, water, and petrochemical sectors reliably.

Customize with 316L stainless steel for harsh corrosion, extended temperature (-40℃~250℃) with metal seals, explosion-proof actuator (ATEX), 4-20mA modulating control, or flange standards (GOST, JIS). Tailor to your media, pressure, and automation needs.

API6D ASME DN100 PN16 CF8/316L stainless steel Electric Actuator Motorized Floating Ball Valve For Normal Temperature Water