Bettis VBL Volume Booster

The Bettis™ VBL Volume Booster, engineered by Emerson, is a high-performance pneumatic accessory designed to increase the speed and responsiveness of valve actuators in control and on/off applications. Installed between the positioner and actuator, the VBL Volume Booster amplifies the air flow rate to and from the actuator, ensuring rapid valve movement and precise positioning control—critical for process reliability and efficiency. With its rugged aluminum construction, corrosion-resistant internal components, and compact design, the Bettis VBL is ideal for use in harsh industrial environments, including oil and gas facilities, refineries, petrochemical plants, and power generation systems. Its adjustable bypass valve allows operators to fine-tune the response characteristics, ensuring stable operation even in sensitive control loops. The Bettis VBL Volume Booster enhances actuator performance by providing a direct, high-flow air path, reducing lag time and improving system responsiveness. This results in optimized valve operation, reduced process variability, and extended actuator life.

Technical Specification of Bettis VBL Volume Booster

Product Type

Actuator Accessories

Certifications

This product is only intended for use in large-scale fixed installations excluded from the scope of Directive 2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS 2).

Control Type

On/Off

Valve Type

Ball, butterfly, plug, triple offset

Feature of Bettis VBL Volume Booster

• Type: Pneumatic volume booster for control and on/off valve applications

• Flow Capacity: High Cv design for rapid actuator response

• Material: Anodized aluminum body with stainless-steel internal parts

• Port Sizes: Available in multiple NPT or metric thread sizes

• Mounting: Compact and lightweight for easy installation

• Adjustable Bypass: Allows fine-tuning of sensitivity and stability

• Temperature Range: Wide operating temperature capability for demanding environments

• Compatibility: Works with pneumatic positioners and actuators