Ball control valves

Control valves

Ball control Valve

Ringo Ball Control Valves are designed for accurate, stable, and repeatable flow control in demanding process applications. Thanks to their characterized control seat and controlled ball rotation, they provide high flow capacity (Cv) with minimal pressure drop, making them ideal for applications requiring both control performance and large flow rates.
Their robust and modular design ensures smooth operation, high reliability, and easy maintenance, even under extreme pressure and temperature conditions.

Features and MaterialsDesign and Applications

Features

  • Accurate Flow Control: Characterized control seat offering linear or equal percentage control curves to match process requirements.
  • High Flow Capacity (High Cv): Optimized design that maximizes flow capacity.
  • Low Pressure Drop: Ideal for applications where pressure loss must be minimized.
  • Anti-cavitation and Low Noise: Optional perforated control seat reduces cavitation and noise.
  • High Control Stability: Smooth operation with low hysteresis and excellent repeatability.
  • Bi-directional Design: Allows flexible installation in the pipeline.
  • Fail-Safe Configurations: Open or closed fail-safe operation with spring-return pneumatic actuator.
  • Direct Automation: Prepared for direct mounting of actuators, positioners, and accessories according to VDI/VDE 3845.

Body Design

  • Three-piece body with compact and robust construction, including a central body and bolted adaptors.
  • Allows full on-site disassembly for inspection, maintenance, or repair.
  • Designed in accordance with API 6D, API 6A, ISO 14313, ISO 14723, BS 5351, and ASME B16.34.
  • Available in sizes from DN 25 to DN 800 (NPS 1 to 32).
  • Pressure classes from ANSI Class 150 to 2500 / PN 10 to 400.
  • Temperature range from –196 °C to 650 °C.

Construction Materials

  • Body and Bonnet: Carbon steel, alloy steels for high and low temperature, stainless steel, Duplex and Super Duplex, nickel-based alloys, and titanium on request.
  • Trim (ball, seat, and screen): Stainless steels, hardened steels, special alloys, and wear-resistant coatings.
  • Stem Sealing: Standard low-emission packing or optional live-loaded low-emission sealing.
  • Coatings and Treatments: Stellite, tungsten carbide, and chromium carbide for severe service applications.

Trim Design

  • Characterized control seat with contoured profile defining the control characteristic.
  • Seat options include standard seat for maximum flow or perforated seat for anti-cavitation and low-noise service.
  • Available control characteristics: linear or equal percentage.
  • High wear resistance thanks to materials selected to withstand erosion, corrosion, and cavitation.
  • Fast response design minimizing hysteresis and improving control loop stability.

Applications

  • Flow control: Accurate and stable control in industrial processes.
  • Pressure control: Suitable for high-pressure pipeline applications.
  • Severe service: Handles cavitation, noise, and erosion conditions.
  • Industries: Oil & Gas, chemical, petrochemical, and power generation sectors.
  • Extreme conditions: Suitable for cryogenic and high-temperature services.

Information

General Brochures

Product Brochures: Control Ball Valve / Technical Datasheet

[EN]

Certificates

Ringo ball control valves are manufactured in compliance with the highest international standards of quality, safety, and performance. Each valve is produced according to specifications such as API 6D, ASME B16.34, and ISO 14313, ensuring full traceability, structural integrity, and reliable operation even under extreme conditions. In addition, all materials and manufacturing processes are verified through non-destructive testing and conformity certificates, guaranteeing that every unit meets the technical and regulatory requirements demanded by the industry.

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