Didtek DBB Electric Operating Ball Valves

Product Overview

The DBB electric ball valve is a high-performance ball valve that integrates dual blocking and discharge safety functions with an electric actuator. Its core design objective is to safely isolate, release pressure and conduct online status monitoring of specific pipe sections without interrupting the entire process flow, and to achieve remote, rapid and precise automated control through electric drive.

Didtek DBB Electric Operating Ball Valves

Detailed explanation of Core features

1. DBB Function - Security Core

DBB is the abbreviation of "Double Block and Bleed", which is the signature function of this valve.

Double blocking: When the valve is in the closed position, the two sealing surfaces inside it (usually the upstream and downstream valve seats) can simultaneously and independently block the flow of the medium from both directions of the pipeline.

Function: To create a reliable isolation section in the pipeline for equipment maintenance, instrument calibration or system segmentation.

Discharge: Between the two blocking seals, there is a dedicated discharge valve.

Function: Release valve chamber pressure: Safely release the medium pressure trapped in the middle chamber of the valve.

Verify the sealing performance: Open the discharge valve. If no medium flows out, it proves that the seals in both directions are effective and the isolation is safe.

Discharge residual medium: Guide the hazardous or harmful medium in the middle cavity to the safe collection system.

2. Electric Operating - Drive Core

The valve is equipped with an electric actuator, bringing the advantage of automation:

Remote automatic control: It can be easily integrated into control systems such as DCS and PLC to achieve remote one-click isolation, program control or emergency interlock (ESD) functions.

Fast action: The electric actuator can provide a second-level opening and closing speed, meeting the process requirements for emergency shut-off.

Precise status feedback: Built-in position sensors can provide real-time feedback of the valve's "open", "closed" or "fault" signals to the control room.

High thrust and reliability: It offers large torque and is suitable for large-diameter and high-pressure working conditions. It relies solely on electricity and does not require complex air sources or hydraulic systems.

3. Ball Valve - Structural Foundation

The valve body adopts a ball valve structure and has inherent advantages:

Low flow resistance and high flow rate: When designed with full bore, the inner diameter of the flow channel is basically the same as that of the pipe, resulting in minimal pressure loss.

Quick switching: The ball can be fully opened or fully closed by rotating 90°.

Excellent sealing performance: The use of advanced sealing materials (such as PTFE, metal seals) can achieve ANSI VI grade or zero leakage sealing.

Summary of main advantages

Outstanding safety: The DBB function offers reliable isolation and safe online emission/detection methods, significantly reducing maintenance risks and environmental impacts.

High levels of automation and efficiency: Electric actuators enable remote operation, allowing complex safety procedures to be completed without the need for on-site personnel, thereby enhancing operational efficiency and the intelligence level of the factory.

Space and cost savings: A DBB electric ball valve can replace the traditional combination of "two stop valves + one discharge valve", saving installation space, pipeline materials and installation costs.

Convenient operation: Integrating multiple steps such as isolation, discharge, and verification into the automated operation of a single valve simplifies the operation process.

High reliability: Combining the robustness and durability of ball valves with the stability and reliability of electric actuators, it ensures long-term operation in critical applications.

Typical application fields

This valve is particularly suitable for applications that require frequent isolation, online maintenance or handling of hazardous media

Oil and gas: Isolation of equipment in pipeline cut-off stations, process plant areas, and isolation and discharge of the receiving and dispatching cylinders of pigmenters.

Chemical engineering and petrochemical industry: Isolation of the inlet and outlet of reactors, tanks, and pumps for safety maintenance, sampling, and instrument maintenance.

Power industry: Safety isolation of boiler feed water, steam sampling systems, and chemical dosing systems.

Any process isolation point that requires the realization of automation and safety interlocking.

Conclusion

DBB Electric Operating Ball Valves is not merely a simple switchgear. It is a high-performance engineering solution integrating safety isolation, online monitoring and automatic control. It makes important safety processes efficient and reliable through automation technology and is a key component for enhancing the intrinsic safety level and degree of automation in modern process industries.

Design specification: