Product Overview
The Bürkert 8696 (part number 00227451) is an electropneumatic positioner engineered for precise closed-loop control of pneumatically actuated process valves. As a member of Bürkert’s proven 8696 series, this unit converts a standard electrical control signal into a proportional pneumatic output pressure, enabling accurate valve stem positioning across the full stroke range. The device operates on a force-balance feedback principle, continuously comparing the command setpoint against the actual valve position and modulating the pilot air supply to eliminate deviation. This positioner is designed for integration into hygienic and industrial process lines where reliable, repeatable valve actuation is critical to maintaining flow control, batch consistency, and process safety.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Electropneumatic Positioner (Process & Pneumatic Valve Control) |
| Model Designation | Bürkert 8696 / 00227451 |
| Control Signal Input | Standard analog electrical setpoint (4–20 mA / 0–10 V class) |
| Pneumatic Supply Pressure | Instrument air, standard industrial grade (filtered, dry, oil-free) |
| Actuation Principle | Force-balance feedback with proportional pilot air modulation |
| Mounting & Connection | Standard Bürkert / ISO interface for pneumatic actuator mounting |
| Position Feedback | Mechanical stroke feedback via position sensor lever / shaft |
| Housing Protection | Industrial-grade enclosure for process environments |
Engineering Features & Advantages
- Precision Valve Positioning: Closed-loop force-balance control delivers accurate stem positioning and minimizes setpoint deviation, ensuring consistent flow characteristics across the valve stroke.
- Fast Dynamic Response: High-gain pilot stage responds quickly to setpoint changes, reducing hysteresis and improving control loop stability in demanding process cycles.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction suited to vibration, temperature variation, and contaminated plant air environments.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Bürkert 8696 OEM standards, enabling drop-in replacement without modification to actuator or piping.
- Simplified Commissioning: User-accessible zero and span adjustments allow straightforward calibration to match specific actuator stroke and valve characteristics.
Typical Industrial Applications
The Bürkert 8696 electropneumatic positioner is deployed across a wide range of process and industrial sectors, including chemical and pharmaceutical production lines where precise pneumatic valve modulation is required for dosing and batch control; food and beverage processing plants utilizing hygienic pneumatically actuated valves; water and wastewater treatment facilities managing flow control and isolation valves; and general industrial automation systems integrating pneumatic process valves into PLC-controlled loops. Its reliable electropneumatic interface makes it equally
PRODUCT IMAGES
BURKERT 8696 / 00227451 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 8696 / 00227451 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.