Product Overview
The BURKERT 8694 (Part No. 00227401) is a high-precision electro-pneumatic positioner engineered by Bürkert, a global leader in fluid control and automation technology. This advanced control instrument is designed to mount directly onto pneumatically actuated process valves, where it converts a standard electrical control signal into a proportional pneumatic output pressure. By continuously comparing the valve stem position feedback against the commanded setpoint, the 8694 delivers closed-loop positioning with exceptional accuracy, making it an indispensable component in automated process control loops across the chemical, pharmaceutical, water treatment, and food and beverage industries.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Electro-pneumatic Positioner (Automation & Control Instrument) |
| Model Designation | BURKERT 8694 / 00227401 |
| Control Signal Input | Standard analog setpoint (4–20 mA / 0–10 V), factory configurable |
| Pneumatic Supply Pressure | Standard industrial instrument air (up to rated bar, filtered and dry) |
| Position Feedback | Non-contact magnetic/inductive stroke sensing with continuous closed-loop correction |
| Mounting & Connection | Standard ISO / Manufacturer Interface — direct NAMUR-style actuator mounting |
| Housing Protection | Robust industrial enclosure, IP65/IP67 rated for harsh environments |
| Operating Temperature | Standard industrial range (approx. −10 °C to +60 °C ambient) |
Engineering Features & Advantages
- Precision Closed-Loop Positioning: Continuously compares actuator stroke feedback against the electrical setpoint, delivering highly accurate valve positioning and rapid correction of deviation for superior process control.
- Fast Dynamic Response: High air flow capacity and optimized pilot valve actuation ensure quick, stable response times with minimal overshoot, even on large-stroke pneumatic actuators.
- Auto-Calibration & Diagnostics: Supports automatic zero and span adjustment during commissioning, reducing setup time and minimizing operator error while enabling condition monitoring.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a sealed enclosure protecting internal electronics and pneumatics from dust, moisture, and chemical exposure.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement on Bürkert and compatible third-party pneumatic valve actuators.
Typical Industrial Applications
The BURKERT 8694 electro-pneumatic positioner is deployed wherever precise, automated control of pneumatically actuated process valves is required. Typical applications include chemical and petrochemical process control loops, pharmaceutical and biotechnology production lines requiring validated positioning accuracy, water and wastewater treatment plant flow and pressure regulation, and food and beverage processing systems with hygienic valve automation. It is equally suited to industrial automation skids, dosing
PRODUCT IMAGES
BURKERT 8694 / 00227401 Electro-pneumatic Positioner
âš¡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- 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 8694 / 00227401 Solenoid Valve. This Germany-made 24V DC hydraulic component features a 2-way normally closed design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.