Achieve the highest standard of process integrity and environmental compliance with the Fisher Easy-e Series Bellows Seal Bonnet. Engineered specifically for demanding applications, this bonnet assembly replaces traditional packing to provide a hermetically sealed, leak-proof barrier around the valve stem.
This advanced sealing solution is designed to completely contain hazardous, toxic, expensive, or regulated process fluids—such as those in sour gas service—preventing any fugitive emissions to the atmosphere. By utilizing a welded metal bellows, it eliminates the potential for external leakage common in packed stems, offering superior reliability and safety for your most critical services.
Ideal for applications mandated by stringent environmental regulations like the Clean Air Act, the bellows seal bonnet is a key feature for ensuring your facility meets emission standards. It provides long-term, maintenance-free sealing performance, reducing the total cost of ownership by eliminating packing maintenance and the risk of unplanned downtime.
| Attribute | Description |
|---|---|
| Product Name | Fisher Easy-e Series Bellows Seal Bonnet |
| Compatibility | Designed for Fisher Easy-e series control valves (e.g., ET, ED, EW variants). |
| Core Technology | Hermetically sealed, welded metal bellows assembly. |
| Primary Benefit | Zero Fugitive Emissions: Provides a permanent, leak-tight seal for hazardous, toxic, or valuable fluids, preventing stem leakage to the atmosphere. |
| Key Application | Critical for sour gas (H₂S), toxic, volatile organic compound (VOC), and precious fluid services. Essential for compliance with stringent environmental regulations. |
| Material Options | Bellows typically available in Stainless Steel (e.g., 316L) or High-Nickel Alloys (e.g., Inconel) for corrosion resistance in demanding processes like those requiring NACE MR0175 compliance. |
| Design Integration | Often integrates with or replaces the standard ENVIRO-SEAL™ packing system, providing a more robust sealing solution for extreme conditions. |
| Service Life | Rated for a guaranteed minimum number of cycles (e.g., hundreds of thousands), ensuring long-term reliability. |
The bellows seal bonnet is configured to match specific valve models and sizes. Key selection parameters include:
| Specification | Details / Typical Range |
|---|---|
| Valve Series | Easy-e (ET, ED, EW, EZ, etc.). |
| Valve Size (NPS) | Common range from 1/2″ to 12″, covering most Easy-e applications. |
| Pressure Class (ASME) | Class 150 to Class 600 (standard Easy-e range). Specific bonnet designs are rated for the full pressure rating of the valve body. |
| Temperature Range | Dependent on bellows material. Standard stainless steel bellows can typically handle processes from -50°C to 400°C (-58°F to 752°F). Consult for specific high-temperature alloys. |
| Bellows Material | Stainless Steel 316L (Standard), Hastelloy C-276, Inconel 625 (for high corrosion/heat). |
| Bonnet Extension | Often includes an extended bonnet design to protect the bellows from extreme process temperatures and to facilitate heat dissipation. |
| Face-to-Face Dimensions | Conforms to standard dimensions (e.g., ANSI, EN/DIN) for direct retrofit. |
| Standards & Certs | Can be supplied to meet NACE MR0175/ISO 15156, SIL, and PED requirements as needed. |
For detailed technical data sheets, assistance in selecting the correct bellows seal bonnet for your specific valve model and service conditions, or to request a formal quote, please contact the sales team at Kateteco. Our experts are ready to help you implement this critical emission control solution.
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KateTeco (Tianjin) Technology Co., Ltd. serves as an outstanding partner in the field of industrial fluid automation, specializing in the introduction and integration of high-end valves and instruments. We are committed to providing customers with safe, reliable, and intelligent system solutions. By leveraging global leading product resources and supported by systematic professional training and on-site technical assistance from Emerson’s experienced engineers, we ensure that customers can respond promptly and accurately to technical challenges.
With full lifecycle services covering installation, commissioning, operation, maintenance, and replacement, we deliver a true one-stop service system. This allows our customers to enjoy seamless, efficient, and high-quality assurance, supporting enterprises in achieving stable operation and continuous upgrades.
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