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FISHER™ 2625 Volume Boosters

Main Features

Fast Response—Booster delivers the volume needed for rapid actuator stroking when large input changes suddenly occur.
Adjustable Response: Integral bypass limiting adjusts the amplifier response so that the actuator operates smoothly after slow signal changes
Efficient Operation—Soft seats provide tight shutoff to reduce unnecessary air consumption and eliminate saturation of positioner relays.
Accuracy: The actuator will be adjusted faster on demand without compromising the steady state accuracy of the positioner.

Specifications

Available configurations: 2625/2625SST/2625NS
Maximum outlet pressure: 10.3 bar (150 psig)
Air Supply Pressure: When the flow amplifier is used with a positioner or other pneumatic accessory, the same air supply must be used to feed the positioner and flow amplifier through a FISHER 67D, 67DR, or 95H regulator.

-Typically used with diaphragm actuators: up to 2.8 bar (40 psig)

-Typically used with piston actuators: up to 10.3 bar (150 psig)

Input signal: Positioner output
Fixed input/output pressure ratio: 1:1
medium of supply: air/natural gas
Other Configurations: Contact us for more information.

Applications

Used in conjunction with a positioner on a 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.