Specifications; Installation; Adjusting The Travel Stops - Fisher A11 Instruction Manual

Table 3 Approximate Weight for Size 3 through 24-Inch
Valves
VALVE
SIZE
Wafer Style
3
4
6
8
10
12
14
16
18
20
24
3
4
6
8
10
12
14
16
18
20
24

Specifications

Specifications are shown in table 1 and the
specifications for a given valve are stamped on a
nameplate attached to the valve.

Installation

WARNING
Always wear protective gloves,
clothing, and eyewear when
performing any installation operations
to avoid personal injury.
Check with your process or safety
engineer for any additional measures
that must be taken to protect against
process media.
If installing into an existing
application, also refer to the WARNING
at the beginning of the Maintenance
section in this instruction manual.
CLASS 600
Single Flange
kg
9 15
10 24
25 48
52 83
113 163
153 209
186 254
274 349
361 481
526 671
669 880
lbs
20 32
23 52
54 106
115 183
249 360
337 460
410 560
605 770
796 1060
1160 1480
1475 1940
When installing a valve after it has
been in long-term storage, cycle the
valve at least ten times to re-energize
the dynamic seal.
Please contact your Emerson Process Management
sales office if you have any questions about
preparing a valve for storage or if you are planning
to put into service a valve that has been stored for
some time.

Adjusting the Travel Stops

CAUTION
When using manual or power
actuators, adjust the actuator travel
stops so the disc stop in the valve
body does not absorb the output of
the actuator.
For actuators without travel stops, the
actuator must be properly mounted to
prevent it from driving the valve disc
against the valve disc travel stop.
Failure to limit actuator travel as
described in this section can result in
damage to the valve shafts or other
valve parts.
An "S" is visible on both the valve
shaft and valve body. When the valve
disc is closed, the "S" on the shaft
aligns with the "S" on the valve body.
1. Locate the actuator travel stop that establishes
the closed position of the valve disc. When adjusting
the travel stop make sure that the disc is from 0 to
0.76 mm (0 to 0.030 inch ) away from the internal
stop in the valve body. This adjustment is necessary
to be certain that the actuator output torque is fully
absorbed by the actuator travel stop rather than the
stop in the valve body.
For actuators without travel stops, the actuator must
be properly mounted to prevent it from driving the
valve disc against the valve disc travel stop.
A11 Valve
Note
Note
3