Optimizing Flow Control in Industrial Piping with Check Valve Designs

Sep 7, 2023 | News

Check valves play a critical role in industrial fluid transfer and processing applications, allowing flow in one direction while preventing backflow. Different check valve designs excel in particular usage scenarios, pipe sizes, and operating conditions. Understanding key check valve types like axial flow, wafer dual plate, and dual disc enables proper selection for optimal protection and performance.

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Axial Flow Check Valves

Axial flow check valves regulate flow along the axis of the pipe rather than perpendicular like swing checks. Axial checks feature:

  • Streamlined body shape induces smooth, efficient flow.
  • Reverse flow pushes poppet onto seat to close valve.
  • Minimal pressure drop compared to swing checks.
  • Handle higher pressure applications.
  • Compact design good for confined spaces.

The linear flow pattern and gentle closing of axial checks make them well-suited for handling slurries, contaminated media, and high velocity flows with reduced water hammer.

Wafer Dual Plate Check Valves

Wafer check valves offer a compact, maintenance-friendly design:

  • Sandwiched between pipe flanges vs. threaded construction.
  • Dual plates block reverse flow rather than a swinging disc.
  • Plates form tight seal with minimal backflow.
  • No body cavity reduces fouling and clogging.
  • Easy in-line access for inspection and cleaning.

Wafer dual plate checks excel in applications like wastewater, chemical processing, food production, and mining that experience fouling buildup. Their removable design simplifies maintenance.

Dual Disc Check Valves

Featuring two spring-loaded discs, dual disc check valves provide:

  • Tight shutoff with two sealing points.
  • Renewable seat and discs reduce wear.
  • Low pressure loss from smooth contours.
  • Ability to inspect and replace internal components.
  • Installation between pipe flanges.

Dual disc checks suit high cycle and critical applications where minimal backflow is essential. The dual sealing points also enable higher working pressures.

Understanding attributes like flow patterns, shutdown style, maintainability, and pressure handling for check valve types allows proper selection for the operating conditions and flow hazards. Consult manufacturers to match the ideal check valve design to your specific piping application requirements.