Fisher Control-Disk Valve ® ™
Y ou can depend on the Fisher® Control-Disk™ rotary valve to keep quality on spec and output on target. Its wide control range is twice that of traditional butterfly valves for better adherence to set point. You will find the Control-Disk valve ideal for applications that involve fast processes and varying pressure drops, such as in hydrocarbon, refining, chemical, pulp and paper, and metals and mining industries. Rely on the Control-Disk valve to keep your facility on stream and operations on budget.
Wide control range to keep quality on spec and output on target. The Control-Disk valve offers excellent throttling performance. Its equal percentage flow characteristic provides an improved throttling range that allows control in the 15 to 70 percent valve travel range. With its improved capability, the Control-Disk valve allows you to control closer to the ideal set point with less chance of set point overshoot, so you can keep quality on spec and output on target.
Inherent equal percentage characteristic Disk design has a significant effect on butterfly valve flow rate as the valve travels from closed to open. A disk with an inherent equal percentage characteristic can compensate for changing pressure drops as the flow changes. Installed linear characteristic Only equal percentage trim will give a linear installed characteristic for changing pressure drops, which is ideal. The result is a more accurate, one-to-one change between flow rate and valve travel, i.e.
Higher reliability to keep your facility on stream. Your facility has no room for unscheduled downtime. The Control-Disk valve is designed to operate with a very high level of reliability to increase operating uptime. Extensive laboratory verification was performed on the Control-Disk valve and 2052 springand-diaphragm rotary actuator for evidence of reliability. They are designed for 1 million cycles under load conditions. So you can forget leakage, forget failure, and forget poor control.
Fast to install and commission to keep operations on budget. Selecting the Fisher Control-Disk valve couldn’t be easier. It is available to ship in two weeks, and valve selection and sizing are simple procedures. Providing an installation advantage over other butterfly valves, the Control-Disk valve with its 2052 actuator has a compact size for limited space requirements. It also allows for a vertical shaft orientation.
Linkages are eliminated The DVC2000 digital valve controller features linkage-less position feedback. There are no touching parts between the instrument and valve shaft, simplifying controller installation and maximizing cycle life. Local user interface With pushbuttons for menu navigation and a liquid crystal display, the local user interface allows you to configure and calibrate the FIELDVUE DVC2000 digital valve controller in any one of seven different languages.
Choices to suit your requirements. Global standards Sour service capability The Control-Disk valve meets API, ASME, and EN standards, making it suitable for use in all world areas. It has ISO 5211 actuator and NAMUR VDE/ VDI 3845 accessory mountings. Control-Disk valve trim and bolting materials are available for applications involving sour fluids. These constructions comply with MR0103 and MR0175/ISO 15156.
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