Data Sheet

V500 Valve
D100054X012
Product Bulletin
51.3:V500
May 2012
13
Table 10. Actuator Mounting Selections, with Action
and Open Plug Position Options
MOUNTING ACTION
(1)
OPEN PLUG POSITION
Forward Flow Reverse Flow
Left-hand
PDTC Below shaft Above shaft
PDTO Below shaft Above shaft
Right-hand
PDTC Above shaft Below shaft
PDTO Above shaft Below shaft
1. PDTC–Push-down-to-close (extending actuator rod closes valve)
PDTO–Push-down-to open (extending actuator rod opens valve).
Installation
The V500 control valve may be installed in any
position. However, for best shutoff performance, a
position with the shaft horizontal is recommended.
The control valve may be installed in forward or
reverse flow direction. Forward flow (through the seat
ring and past the plug) tends to open the valve; reverse
flow (past the plug and through the seat ring) tends to
close the valve. The reverse flow direction is
recommended for erosive applications.
Specific operating conditions may require a specific
combination of push-down-to-close or -open actuator
motion and open valve plug position above or below
the s haft. To satisfy specific operating requirements,
thecompletecontrolvalvepackage(valveand
actuator) can be assembled and installed in different
ways, providing eight options for actuator motion and
open plug position.
Table10andtheappropriateactuatorbulletin
describe possible assembly and installation options.
For assistance in selecting the appropriate
combination of actuator action and open valve
position, consult your Emerson Process Management
sales office.
Dimensions are shown in figure 5.
Valve Information
To determine the required valve ordering information,
refer to the Specifications table. Review the
information under each specification and in the
referenced tables.
Actuator and Accessory Information
Refer to the specific actuator and accessory bulletins
for required ordering information.
Figure 4. Eccentric Rotation
B1879-1
VALVE BODY
CENTERLINE
VALVE SHAFT
CENTERLINE
VALVE BODY
CENTERLINE
VALVE SHAFT
CENTERLINE
VALVE BODY
CENTERLINE
VALVE SHAFT
CENTERLINE
The Size 20 Fisher 1052 actuator is not available for
use with V500 rotary control valves because the sizing
of this combination is marginal.