Emerson Fisher VBL Volume Booster- User Manual
Emerson Fisher VBL Volume Booster– User Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Instruction Manual; VBL Volume Booster; Specifications
- Page 3 – Table 1. Specifications; Table 2. Maximum Flow Coefficients
- Page 4 – Installation; WARNING; Mounting
- Page 5 – Figure 2. Volume Booster with Yoke Mounting Bracket; Pressure Connections; Exhaust Ports
- Page 6 – Operating Information; Figure 3. Volume Booster Sectional View
- Page 7 – Principle of Operation; Figure 4. Typical Installations with Piston Actuator
- Page 8 – Figure 5. Typical Installations with Diaphragm Actuator; Maintenance
www.Fisher.com
Fisher
r
VBL Volume Booster
Contents
Introduction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Educational Services
. . . . . . . . . . . . . . . . . . . . . . . . .
Installation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mounting
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Connections
. . . . . . . . . . . . . . . . . . . . . . . .
Supply Pressure
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust Ports
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Information
. . . . . . . . . . . . . . . . . . . . . . . . .
Principle of Operation
. . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1. Fisher VBL Volume Booster
X0648
Introduction
Scope of Manual
This instruction manual provides installation, operation, maintenance, and parts information for the Fisher VBL
volume booster (figure 1). Refer to separate instruction manuals for information regarding the valve body, actuator,
and other accessories.
Do not install, operate, or maintain a VBL volume booster without being fully trained and qualified in valve, actuator
and accessory installation, operation and maintenance.
To avoid personal injury or property damage it is important to
carefully read, understand, and follow all of the contents of this manual, including all safety cautions and warnings.
If
you have any questions about these instructions, contact your Emerson Process Management sales office before
proceeding.
Description
The VBL volume booster is used in conjunction with a positioner on a throttling control valve to increase stroking
speed. The booster has a fixed deadband (controlled by the seat‐to‐seat dimension of the supply and exhaust plugs)
which is factory set during assembly and testing. In addition, the booster incorporates soft‐seat construction and an
integral bypass restriction to eliminate positioner saturation problems that can occur with volume boosters that do
not have these features. Adjustment of the integral bypass restriction is necessary for system stability. This adjustment
does not affect the deadband of the booster, but does permit the control valve to respond to small input signal
changes from the positioner without sacrificing steady‐state accuracy.
Instruction Manual
D103317X012
VBL Volume Booster
February 2014
"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.
Summary
Instruction Manual D103317X012 VBL Volume Booster February 2014 2 It also allows the booster to deliver high‐volume output for fast stroking when large, rapid input signal changes occur. The volume booster is used to improve stroking speed. If precision valve control is required, the use of a positi...
Instruction Manual D103317X012 VBL Volume Booster February 2014 3 Table 1. Specifications Input Signal Positioner output Maximum Input Signal Pressure (1) VBL-1 and VBL-3 : 5.5 bar (80 psig) VBL-2 and VBL-4: 10.3 bar (150 psig) Input to Output Pressure Ratio Fixed at 1 to 1 Supply Pressure Ranges (1...
Instruction Manual D103317X012 VBL Volume Booster February 2014 4 Installation WARNING Always wear protective clothing, gloves, and eyewear when performing any installation procedures to avoid personalinjury. System damage may result if a volume booster is installed in a way that it can be physicall...
