The compact, lightweight Fisher VBL booster is designed for applications in which a valve positioner alone cannot provide the stroking speed needed to meet rapidly changing process conditions and demands. The booster enables fast valve response in the face of rapid input-signal changes. It incorporates a variety of features that work in tandem — fixed deadband, internal soft seats that produce tight shutoff (to reduce unnecessary air consumption and eliminate positioner delays), and an internal bypass restriction that enables fast actuator response. Maximum input signal pressure is 10.3 bar (150 psig), and the input-to-output ratio is fixed at 1:1.
Company
Emerson Process Management