Product Overview
The Burkert 00226987 (Type 8694) is a high-precision electropneumatic positioner engineered for the closed-loop control of pneumatically actuated process valves. As a member of Bürkert’s renowned ELEMENT series, this device converts a standard electrical control signal (4–20 mA or 0–10 V) into a proportional pneumatic output pressure, enabling precise valve stem positioning in throttling and on/off control applications. The 8694 is specifically designed for integration with linear and quarter-turn pneumatic actuators, providing accurate, repeatable positioning in demanding process environments. Its robust construction and advanced control algorithm ensure minimal air consumption, fast response times, and superior control stability, making it an essential component in automated fluid handling and industrial process control systems.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Electropneumatic Positioner (Process & Pneumatic Valve Control) |
| Model Designation | Burkert 00226987 / Type 8694 |
| Operating Pressure | Pneumatic Supply: 1.4 – 7 bar (20 – 100 psi), filtered dry air |
| Mounting & Connection | Standard NAMUR / Bürkert actuator interface, G 1/4 pneumatic ports, M12 electrical connection |
| Control Signal Input | 4–20 mA (standard), 0–10 V (optional configuration) |
| Position Feedback | Non-contact magnetoresistive sensor, analog output 4–20 mA |
| Protection Class | IP65 / IP67 (depending on configuration) |
Engineering Features & Advantages
- Precision Performance: Advanced closed-loop control algorithm delivers highly accurate valve positioning with minimal hysteresis and excellent repeatability, ensuring precise flow control in throttling applications.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, featuring a rugged housing, non-contact position sensing, and resistance to vibration, temperature fluctuations, and contaminated environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including NAMUR interface and standardized electrical/pneumatic connections for seamless integration.
- Low Air Consumption: Optimized pilot valve design minimizes compressed air usage, reducing operational costs and environmental impact.
- Comprehensive Diagnostics: Integrated diagnostic functions provide real-time status monitoring, enabling predictive maintenance and minimizing unplanned downtime.
Typical Industrial Applications
This electropneumatic positioner is widely deployed in critical process control loops across multiple industries, including: Chemical & Pharmaceutical Processing for precise dosing and flow regulation of aggressive media; Food & Beverage Production where hygienic valve control and repeatability are essential; Water & Wastewater Treatment for reliable modulating control of large quarter-turn and linear valves; and General Industrial Automation involving pneumatic actuated control valves in heating, cooling, and steam systems. Its robust design also suits Marine &
PRODUCT IMAGES
BURKERT 00226987 / 8694 Electropneumatic Positioner
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine BURKERT 00226987 / 8694 Solenoid Valve. This Germany-made 24V DC hydraulic component features a 2/2-way normally closed design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.