Product Made In Japan
Manufacturer: KONAN
Model: VB Series

The volume booster actively maintains pressure in air tanks and actuators, delivering high performance for quick pressure relief. You can operate it remotely through a pilot-operated regulator placed at a convenient nearby location.

Model Code

Specifications

● For use below 5℃, provide adequate measures against freezing.
● Make sure that the primary pressure is at least 0.1MPa higher than the secondary pressure.

Characteristics

Operation

① Signal pressure enters from the pilot port （P） t to the upper diaphragm room and acts on the diaphragm to open the main valve.

② The primary pressure flows through the main valve to the secondary side and increases the secondary pressure while entering through passage A to the lower diaphragm room and acts on the diaphragm.

③ When the secondary pressure and the signal pressure are equal, the main valve closes to hold the secondary pressure.

④If the secondary pressure exceeds the signal pressure, it pushes the diaphragm up, opening the relief valve. This releases the secondary pressure through the relief port (R) until it equalizes with the signal pressure.

⑤ The needle valve is used as a by-path between the signal pressure side and the primary side. When strained （turned clockwise）, the response of the secondary pressure to the signal pressure becomes faster. When the needle valve is open （turned counterclockwise）, the response becomes slower. Adjust the needle valve to obtain stable operation of the regulator.

Outside Dimensions

Operating Instructions

1. Installation

Perform enough air flushing of pipes and piping materials to eliminate dust and foreign substances completely before connecting to components.

Install in the correct direction as indicated by an arrow mark on the body to make sure of correct airflow.

Always open the relief port to the atmosphere or connect a silencer. When the relief port is closed or pressurized, the volume booster cannot be normally operated.

2. Fluid

● For air supply to the primary side, filtrate the fluid using an air filter with filtration less than 40μm.

3. Lubrication

● Do not lubricate the volume booster.

● When lubricating downstream components using a lubricator in the open air, perform the process at the secondary side of the volume booster.

4. Bracket

● Bracket is available as an option.

5. Pressure 

● Set and adjust the secondary pressure using a pilot-operated regulator.
● Set primary pressure about 0.1 MPa higher than the secondary set pressure. If there is no pressure difference, the available flow volume is decreased.

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