TIANYU DN100 PN16 Flange CF8/WCB Trunnion Mounted Ball Valve With Hydraulic Actuator: Engineered for Precision Flow Control in Industrial Systems

I. Product Overview

II. Key Attribute Specifications

A. Dimensional and Pressure Parameters

• Nominal Diameter: DN100, part of the trunnion – mounted ball valve range (DN50 – DN500 for fixed – ball design). This 2 – inch diameter is optimized for medium – flow industrial pipelines, balancing flow capacity and space efficiency. It ensures smooth media passage while enabling precise control over flow rates, critical for processes like chemical dosing, steam distribution, or oil transfer.
• Connection Type: Flange – type, conforming to industry standards (e.g., ASME B16.5). Flanged connections facilitate secure, leak – tight integration into pipeline systems. The flange design distributes pressure evenly across the joint, enhancing structural stability under PN16 pressure and enabling easy maintenance and replacement.
• Nominal Pressure: PN16 (1.6MPa working pressure), with capabilities to handle system pressures up to this rating. This makes it suitable for a broad spectrum of industrial applications, from low – pressure water supply networks to medium – pressure hydraulic circuits, steam lines, and chemical processing systems.

B. Material Composition

• Valve Body Material) Available in CF8 (stainless steel, equivalent to 304) and WCB (cast carbon steel).
  • CF8 Stainless Steel: Offers superior corrosion resistance, attributed to its 18 – 20% chromium and 8 – 10.5% nickel content. This forms a passive oxide layer, protecting against rust, pitting, and chemical attack—ideal for applications involving corrosive media (e.g., acids, alkalis, seawater). It also boasts good mechanical properties (tensile strength ≥ 515MPa), ensuring structural integrity under pressure.
  • WCB Cast Carbon Steel: Delivers high strength and durability, with tensile strength ranging from 485 – 655MPa. Suited for non – corrosive or mildly corrosive media (e.g., water, steam, mineral oils), it provides cost – effective performance in industrial systems where corrosion resistance is not the primary concern.
• Sealing Material) Multiple options to suit diverse media and operating conditions:
  • PTFE: Exceptional chemical resistance, low friction, and high sealing efficiency. Ideal for clean, non – abrasive media (e.g., water, gases, mild chemicals), ensuring bubble – tight sealing and long – term reliability.
  • PPL: High – temperature resistance (up to 300℃), suitable for steam and hot oil applications. Maintains sealing integrity under thermal cycling and provides good wear resistance.
  • Metal Hard Seal: Comprises hardened metal surfaces (e.g., stainless steel, alloy coatings) for high – pressure, high – temperature, and abrasive media. Withstands extreme conditions (e.g., high – pressure steam, slurry flow), ensuring durable sealing and minimal leakage.
  • Hard Metal Alloy: Offers exceptional wear and corrosion resistance, designed for highly abrasive or corrosive media (e.g., mining slurries, aggressive chemicals). Extends valve service life in harsh environments.

C. Actuation and Operational Parameters

• Control Mode: Dual – action (double – acting) and single – action (spring – return) hydraulic actuation.
  • Double – Acting: Utilizes hydraulic pressure for both opening and closing, delivering fast, precise valve operation. Ideal for continuous – process applications requiring rapid flow adjustment or frequent cycling.
  • Single – Acting (Spring – Return): Employs hydraulic pressure for one direction (e.g., opening) and a spring for return (closing). Ensures fail – safe operation, reverting to a predefined position (open or closed) during hydraulic pressure loss—critical for safety – critical applications (e.g., emergency shutdown systems).
• Hydraulic Pressure: Operates within a 3.2MPa – 16MPa range. This allows customization to match system hydraulic pressures, ensuring optimal actuator performance and valve control.
• Medium Temperature: ≤ 200℃ (standard), compatible with a wide range of industrial media temperatures. For high – temperature applications (up to 300℃), PPL or metal seals can be specified.
• Ambient Temperature: Standard range of – 20℃ to 80℃, suitable for most industrial environments. Customized designs can extend this range for extreme – temperature applications (e.g., cryogenic or high – heat environments).

III. Feature Description

A. Trunnion – Mounted Ball Design

• Reduces Seat Wear: Distributes media pressure across the ball and seat more evenly, minimizing wear and extending seal life—critical for PN16 pressure and high – cycle applications.
• Enables Higher Pressure Ratings: The trunnion support stabilizes the ball, allowing the valve to handle higher pressures (up to PN16 and beyond for specialized designs) without seat deformation or leakage.
• Improves Sealing Reliability: Ensures consistent ball – to – seat contact, even under fluctuating pressures or flow rates. This results in reliable, bubble – tight sealing (ANSI/FCI Class V or higher), preventing media leakage and ensuring process safety.

B. Hydraulic Actuation Precision

• High Torque Output: Hydraulic actuators generate significant torque, enabling quick and precise valve operation—even for large – diameter or high – pressure valves. This ensures rapid flow adjustment in critical processes (e.g., chemical injection, steam turbine bypass).
• Proportional Control Capability: When paired with a suitable control system, hydraulic actuators support proportional flow control. This allows for fine – tuning of flow rates (e.g., 0 – 100% modulation), essential for processes requiring precise media dosing or pressure regulation (e.g., pharmaceutical manufacturing, oil refining).
• Rapid Response Time: Hydraulic systems react quickly to control signals, enabling fast valve opening/closing times (milliseconds to seconds, depending on design). This is vital for emergency shutdown scenarios, where minimizing media release or equipment damage is critical.

C. Corrosion and Wear Resistance

• CF8 Stainless Steel Durability: In corrosive media (e.g., coastal water treatment, chemical processing), CF8’s passive oxide layer resists rust, pitting, and chemical attack. This extends valve service life and reduces maintenance costs, even in aggressive environments.
• WCB Strength in Non – Corrosive Systems: For non – corrosive media (e.g., steam, mineral oils), WCB’s high tensile strength and impact resistance ensure long – term reliability. Its cost – effectiveness makes it a practical choice for large – scale industrial systems.
• Seal Material Adaptability: The range of seal materials (PTFE, PPL, metal, Hard Metal Alloy) allows matching the valve to specific media characteristics. For example:
  • PTFE seals suit clean, low – temperature media (e.g., drinking water, compressed air).
  • PPL seals handle high – temperature steam or hot oils.
  • Metal and Hard Metal Alloy seals resist abrasion and corrosion in slurry or chemical processing applications.

D. Flange Connection Reliability

• Leak – Tight Integration: Precision – machined flange faces and compatible gaskets (e.g., spiral – wound, metal – jacketed) create a secure seal, preventing media leakage under PN16 pressure.
• Easy Installation and Maintenance: Flanged connections allow straightforward valve installation, removal, and maintenance. This reduces downtime during inspections, repairs, or replacements—critical for continuous – process industries (e.g., petrochemicals, power generation).
• Compatibility with Industrial Standards: Conforming to ASME B16.5 and other industry standards, the flanged valve integrates seamlessly with existing pipeline systems, eliminating the need for custom fittings or modifications.