The ZPD-2000 electro-pneumatic valve positioner is a primary accessory for pneumatic actuators in industrial automation control systems. It receives a standard 4-20mA DC signal from a controller or control system. Through electro-pneumatic conversion and internal power amplification, it converts electrical signals into corresponding pneumatic outputs sent to the actuator. Utilizing the mechanical feedback principle of valve stem displacement, the device forms a closed-loop control system to precisely regulate and control the valve's opening position. The ZPD-2000 positioner features rapid response, high sensitivity, and strong anti-vibration performance. It is specifically designed for harsh conditions where there is a need to improve regulation accuracy, overcome stem friction, and eliminate the effects of unbalanced forces. It is widely applied to single-acting or double-acting pneumatic control valves.

Product Image of ZPD-2000 Electro-Pneumatic Valve Positioner

1.Efficient E/P control logic:Utilizing the force-balance principle, it precisely converts 4-20mA signals into pneumatic outputs. High positioning resolution and linearity significantly improve the dynamic response and steady-state precision of pneumatic control valves.
2.Superior anti-vibration performance:The internal structure is optimized to maintain stability and reliability in complex industrial vibration environments, effectively preventing valve position drift caused by pipeline vibration.
3.Flexible span and zero adjustment:Equipped with an easy-to-use mechanism allowing for rapid field calibration of zero (4mA) and span (20mA). The wide adjustment range adapts to various linear or rotary actuators with different strokes.
4.Energy-efficient low air consumption:Optimized pilot valves and air circuits ensure extremely low air consumption in a steady state, significantly reducing the overall operational cost of the compressed air system.
5.Support for multiple mode conversion:Through simple internal component adjustments, direct (positive) or reverse action can be achieved. It also supports split-range control to meet complex process requirements.
6.Durable housing protection:The die-cast aluminum alloy casing features high-performance anti-corrosion coating. Excellent sealing protects against dust, moisture, and corrosive gases, meeting outdoor installation requirements.
7.Standardized mounting interface:Mounting brackets and feedback lever connectors comply with international standards, allowing for easy installation on various pneumatic diaphragm or piston actuators regardless of brand.
8.Easy maintenance and modular structure:The scientific layout of air modules and electronic units allows for inspection and cleaning of internal filters without disassembling the entire positioner, shortening maintenance time.

Structural Drawing of ZPD-2000 Electro-Pneumatic Valve Positioner

Main Technical Parameters

Outline dimension table

Due to the rapid R&D iteration speed of valve products from China Kaivex Valve Group Co., Ltd., the above technical parameters and specification documents, including product overview, features, parts materials, outline dimension charts, CAD drawings, and product instruction manuals, are for your reference only. For actual applications, please contact our valve sales engineers to obtain the support you need for free. Thank you!