Производство

Калибровка

Accurate calibration is essential for ensuring the angle control valve operates precisely as intended within the control loop. Proper calibration guarantees responsiveness, stability, and optimal process management.

• Bench Set Calibration: This initial step involves applying specific air pressures to the actuator (for pneumatic types) without process pressure, verifying the required valve stem travel range (e.g., ensuring the valve fully opens and closes at the specified minimum and maximum signal pressures).
• Positioner Configuration: If equipped with a positioner, it’s calibrated to accurately translate the control signal (e.g., 4-20mA) into the corresponding valve position, overcoming friction and ensuring precise throttling control across the entire operating range.
• Stroke Verification: Confirms the valve achieves its full travel from fully closed to fully open as dictated by the control signal and actuator limits. This ensures the calculated flow capacity (Cv) can be realized.
• Seat Leak Testing: Performed to verify the valve meets its specified shutoff classification (e.g., ANSI/FCI 70-2 Class IV, V, or VI) when fully closed, ensuring minimal leakage under operational pressure.

Key Features and Advantages

• Robust construction designed for demanding high-pressure and high-temperature services.
• Excellent capability for handling fluids prone to flashing or cavitation due to the flow path design.
• Suitable for controlling fluids containing suspended solids or slurries, minimizing erosion and plugging.
• Self-draining body design prevents accumulation of process media, ideal for corrosive or crystallizing fluids.
• Offers high flow capacity (Cv) compared to conventional globe valves in certain configurations.
• Provides precise throttling and flow regulation across a wide range of operating conditions.
• Available in a variety of body materials, trim configurations, and end connections to suit diverse applications.
• Compatible with various pneumatic, electric, or hydraulic actuators and smart positioners for integrated control.
• Designed for reduced erosive wear on body and trim components in challenging services.
• Offers reliable shutoff capabilities when properly specified and maintained.

Diverse Applications Across Industries

Angle control valves are versatile solutions employed across numerous industrial sectors where reliable flow control under demanding conditions is paramount.

Oil & Gas Industry

• High-Pressure Letdown: Safely reduces high pressures in gas processing, separation units, or pipeline stations, managing potential erosion.
• Sour Gas Service: Constructed with NACE-compliant materials to resist sulfide stress cracking in sour environments.
• Coker Units: Handles abrasive coke fines and high temperatures effectively in delayed coking processes.

Chemical Processing Industry

• Corrosive Fluid Handling: Available in alloys resistant to aggressive chemicals, acids, and bases found in reactor loops or transfer lines.
• Slurry Management: Controls the flow of abrasive or particle-laden slurries without excessive wear or clogging.
• High-Temperature Reactor Control: Suitable for regulating flow in high-temperature chemical synthesis processes.

Power Generation Industry

• Boiler Feedwater Control: Manages high-pressure, high-temperature feedwater flow reliably.
• Steam Pressure Reduction: Controls steam flow and pressure in turbine bypass systems or auxiliary steam lines.
• Soot Blower Systems: Effectively handles the intermittent, high-pressure steam flow used for cleaning boiler tubes.

Pulp & Paper Industry

• Liquor Lines: Manages corrosive black, green, or white liquors containing suspended solids.
• Stock Flow Control: Regulates the flow of pulp stock, handling fibrous material effectively.
• Steam & Condensate Systems: Controls steam flow for drying processes and manages condensate return.

Mining & Minerals Processing

• Slurry Transport Lines: Excels in controlling the flow of highly abrasive mineral slurries.
• Leachate Control: Handles potentially corrosive and erosive fluids in hydrometallurgical processes.
• Reagent Dosing: Provides precise control for adding chemical reagents during mineral extraction.

Water & Wastewater Treatment

• Sludge Control: Manages the flow of thick or abrasive sludge in treatment processes.
• Chemical Dosing: Controls the addition of treatment chemicals reliably.
• High-Pressure Water Systems: Regulates flow in high-pressure distribution or pumping systems.