Product Overview
The Bürkert Type 2381 A 40 (part number 00222723) is a pneumatically actuated bellows control valve engineered for precise, leak-free regulation of neutral and aggressive media in industrial process systems. Manufactured by Bürkert, a global leader in fluid control technology, this valve utilizes a PTFE bellows sealing element that isolates the actuator and stem from the process fluid, eliminating fugitive emissions and ensuring hermetic separation. The valve operates on a force-balanced pneumatic piston principle, where a control pressure signal modulates the valve plug position to achieve proportional flow control. With its robust 2-way globe valve body and bellows-sealed design, the 2381 A 40 is ideally suited for continuous duty in chemical processing, water treatment, and high-purity industrial applications where media containment and precise flow regulation are critical.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Bellows Control Valve (2-Way Globe Valve) |
| Model Designation | Bürkert Type 2381 A 40 / 00222723 |
| Nominal Diameter (DN) | DN 40 (1 1/2″) |
| Operating Pressure | Up to 10 bar (media), pilot pressure 3–7 bar |
| Sealing Principle | PTFE Bellows, hermetically sealed stem |
| Actuation Type | Pneumatic piston actuator, spring-return |
| Control Function | Modulating / Proportional flow control |
| Mounting & Connection | Flanged or threaded port connection (ISO / DIN standard) |
| Body Material | Stainless Steel / Brass (media-dependent) |
| Media Compatibility | Neutral, aggressive, and high-purity fluids |
Engineering Features & Advantages
- Hermetic Bellows Sealing: The PTFE bellows completely isolates the actuator and stem from the process media, preventing leakage and ensuring zero fugitive emissions — ideal for toxic, corrosive, or high-purity fluids.
- Precise Modulating Control: The pneumatic piston actuator delivers smooth, proportional valve positioning for accurate flow regulation across the full stroke range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust globe valve body and wear-resistant bellows construction.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original BURKERT standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
With its robust 2-way globe valve body and bellows-sealed design, the 2381 A 40 is ideally suited for continuous duty in chemical processing, water treatment, and high-purity industrial applications where media containment and precise flow regulation are critical.
PRODUCT IMAGES




BURKERT 2381 A 40 / 00222723 Bellows Control Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
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- 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.
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