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For Faster Actuator Response and Stable Valve Control
ControlAir is pleased to release the new Type 625 Volume Booster, a compact pneumatic relay designed to improve the speed and performance of pneumatic control valve actuators.
Installed between a valve positioner and pneumatic actuator, the Type 625 increases available airflow to reduce actuator positioning time and improve valve response. A fixed deadband and adjustable bypass valve allow small incremental downstream adjustments without opening the main booster valve, while providing field adjustment of dynamic response for stable operation across a wide range of actuator sizes.
Key Features of the Type 625 Volume Booster
- 1:1 Pressure Ratio: Provides a 1:1 signal-to-output pressure ratio with supply and signal pressures up to 150 psig (10 bar).
- High Flow Capacity: Forward and exhaust flow coefficients of Cv 1.5 provide strong filling and exhausting capability for faster actuator response.
- Adjustable Bypass: Allows field tuning of actuator response and stability to help minimize overshoot or hunting.
- Accurate Performance: Output accuracy is rated at 1% of a 100 psig output span, with maximum hysteresis of 1%.
- Compact, Flexible Installation: Features 1/4-inch NPT signal, supply, and output connections, weighs approximately 1.25 lb., and can be mounted in any position.
- Wide Temperature Capability: Available in Standard (-40°F to 200°F), Low Temperature (-62°F to 194°F), and Expanded Temperature (-55°F to 284°F) configurations.
Applications
The Type 625 Volume Booster is suitable for both diaphragm and piston actuators and is ideal for process control valves, oil and gas equipment, chemical processing, power generation, industrial automation, and other pneumatic actuator applications requiring faster valve response and stable control.