3-A Certified Sanitary Valves for Reliable Flow Control

In sanitary processing systems, selecting the right valve is critical for maintaining product quality, process efficiency, and hygienic performance. Whether your application requires stopping product flow or diverting media through multiple process paths, Definox DCX3 Shut-Off Valves and DCX4 Divert Valves provide a reliable, easy-to-maintain solution for food, beverage, dairy, pharmaceutical, and personal care applications.

Designed for hygienic processing environments, these sanitary valves are authorized to display the 3-A Symbol and have successfully passed EHEDG testing for Hygienic Equipment Design, helping manufacturers meet increasingly strict food safety and sanitation requirements.

The Definox DCX3 Shut-Off Valve is designed for precise on/off flow control, while the DCX4 Divert Valve allows operators to redirect product flow efficiently within sanitary processing systems.

Both valve models feature a modular clamp-assembled design that simplifies maintenance, reduces downtime, and improves accessibility during cleaning and service procedures. The DCX3 and DCX4 sanitary valves are engineered to optimize both process performance and hygienic cleanability.

The unique spherical body design delivers several operational advantages, including:

  • Improved product flow characteristics
  • Reduced pressure loss
  • Enhanced cleanability
  • Lower product hold-up volume

In addition, the extra-thick valve body walls provide exceptional durability and resistance to mechanical stress and expansion forces commonly found in sanitary processing systems.

The DCX3 and DCX4 valves are available in both manual and pneumatic configurations to support a wide range of process requirements. The fully maintainable pneumatic actuators can be easily converted between:

  • Normally Closed (NC)
  • Normally Open (NO)
  • Double Acting (DA)

This flexibility allows processors to adapt valve operation to changing production requirements without replacing the entire actuator assembly.

Each valve utilizes a one-piece plug assembly equipped with a floating PFA seal designed for high-performance sanitary applications. The PFA seal provides:

  • Excellent cleanability
  • Reliable sealing performance at elevated temperatures
  • Outstanding chemical resistance
  • Long-term durability in aggressive process environments

These features help reduce maintenance while supporting hygienic production standards.

As global food safety regulations continue to evolve, hygienic valve design has become more important than ever. The Definox DCX3 and DCX4 valves are authorized to display the 3-A Symbol and have passed EHEDG hygienic design testing, providing confidence for processors operating in highly regulated industries.

These certifications help ensure:

  • Easier cleaning and sanitation
  • Reduced contamination risk
  • Compliance with hygienic processing standards
  • Reliable long-term sanitary performance

Steel & O’Brien offers a wide range of sanitary flow control valves designed for demanding hygienic processing applications. Our experienced Application Engineers are available to help you select the right shut-off or divert valve for your specific system requirements.