throttling control valve to increase stroking speed. The 2625NS is a nuclear service version and uses elastomeric components that better withstand high temperature and radiation environments. The 2625 and 2625SST are certified for use in Safety Instrumented System (SIS) applications. Certification is by exida® Consulting LLC, a global provider of functional safety and control system security.
Enhance Control Loop Performance with the Fisher 2625 Volume Booster
The Fisher 2625 Series Volume Booster is a high-capacity pneumatic relay designed to significantly increase the stroking speed of throttling control valves. By supplying a large volume of air to the actuator during rapid signal changes, it ensures your valve reaches its set point quickly and accurately. This results in improved dynamic response for your entire control loop, enhancing process stability and efficiency in demanding applications across the oil & gas, chemical, and power generation industries.
Engineered for reliability, the 2625 booster features a soft-seated design that minimizes air consumption and a built-in bypass restriction that allows for fine-tuning of response characteristics. With models certified for use in Safety Instrumented Systems (SIS) up to SIL 3, the Fisher 2625 Series is the trusted choice for both performance-critical and safety-critical applications.
Key Features & Benefits
🚀 Rapid Valve Response
Drastically increases actuator stroking speed by providing a high-volume air supply when large, rapid control signal changes occur. This ensures faster valve positioning for improved process control.
💨 Reduced Air Consumption & Tight Shut-off
The unique soft-seat design ensures tight shut-off when the booster is not relaying, which minimizes instrument air usage and lowers operational costs. It also helps prevent positioner relay saturation.
🛡️ Certified for Safety Systems (SIL 3)
Select models (2625 and 2625SST) are exida certified for use in Safety Instrumented Systems (SIS) up to SIL 3, providing proven reliability for your most critical safety functions.
☢️ Robust Construction for Harsh Environments
Constructed with aluminum or 316 stainless steel (CF8M) bodies for excellent corrosion resistance. The 2625NS Nuclear Service version is available with special elastomers suitable for high-temperature and radiation environments.
🔧 Flexible Installation & Tuning
Can be mounted directly on the actuator or remotely via a mounting bracket. The integrated bypass restriction can be easily adjusted to tune the booster’s response for optimal performance with your specific actuator.
Technical Specifications
| Category | Specification |
|---|---|
| Max. Supply Pressure | Diaphragm Actuators: 40 psig (2.8 bar); Piston Actuators: 150 psig (10.3 bar) |
| Max. Input Signal | 150 psig (10.3 bar) |
| Pressure Ratio | Fixed 1:1 |
| Port Sizes | Input Signal: 1/4 NPT; Supply & Output: 3/4 NPT |
| Body Materials | Aluminum, 316 Stainless Steel (CF8M) |
| Temperature Range | Standard: -40°F to +160°F (-40°C to +71°C); 2625NS High-Temp: -40°F to +200°F (-40°C to +93°C) |
| Approx. Weight | Aluminum Body: 5 lbs (2.3 kg) |
Typical Applications
The Fisher 2625 is ideal for increasing response speed in a wide range of applications, including:
Pressure control systems in Offshore Oil & Gas platforms.
Feed flow control valves in Chemical & Petrochemical plants.
Steam turbine and boiler control in Power Generation (including nuclear services with the 2625NS model).
Imported brand The product styles are rich anddiverse Professiona quality and service
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.
✅ Is it 100% genuine? —— We guarantee: All products are official and come with an 18-month warranty.
✅ Can it be delivered quickly? —— We promise: Provide fast global delivery services to ensure your project progress.
✅ Is expert support available? —— We offer: Full-process technical support, from selection guidance to installation and commissioning.
✅ Is the solution optimal? —— We ensure: Recommend the most reliable and cost-effective solution based on your specific needs.
