Instruction manual

A31A Valve
Instruction Manual
Form 5291
March 2008
7
Table 4. Valve Body Data, Wafer-Style Valves, CL300
VALVE SIZE, NPS
SHAFT DIA. AT
YOKE BEARING
FACE-TO-FACE
DIMENSION
(1)
MINIMUM
I.D
.(2)
APPROXIMATE WEIGHT
Wafer Single-Flange
mm kg
14 44.45 117.5 304.3 125.2 231.3
16 44.45 133.4 346.2 189.2 300.7
18 57.15 149.2 389.4 237.7 411.4
20 69.9 155.6 442.0 370.6 551.1
24 69.9 181.0 523.2 477.2 828.7
Inches Pounds
14 1-3/4 4-5/8 11.98 276 510
16 1-3/4 5-1/4 13.63 417 663
18 2-1/4 5-7/8 15.32 524 907
20 2-3/4 6-1/8 17.40 817 1215
24 2-3/4 7-1/8 20.59 1052 1827
1. Face-to-face dimensions are in compliance with MSS SP68 and API 609 specifications.
2. Minimum I.D. is the minimum pipe or flange I.D. required for disc swing clearance.
Table 5. Hex Head Screw, Stud Bolt and Cap Screw Data
(1)
VALVE
SIZE, NPS
NUMBER OF CAP
SCREWS
NUMBER OF STUD
BOLTS
SIZE-DIAMETER INCH
AND THREAD
LENGTH OF CAP
SCREWS, INCH
LENGTH OF STUD
BOLTS, INCH
CL150 CL300 CL150 CL300 CL150 CL300 CL150 CL300 CL150 CL300
Single-Flange Style
(2)
14 24 40 - - - - - - 1-8 1-1/8-8 2-3/4 3-1/2 - - - - - -
16 32 40 - - - - - - 1-8 1-1/4-8 3 3-3/4 - - - - - -
18 32 48 - - - - - - 1-1/8-8 1-1/4-8 3-1/4 4 - - - - - -
20 40 48 - - - - - - 1-1/8-8 1-1/4-8 3-1/2 4 - - - - - -
24 40 48 - - - - - - 1-1/4-8 11/2-8 3-1/2 4-1/2 - - - - - -
Wafer-Style
14 - - - 8 12 16 1-8 1-1/8-8 - - - 3-1/2 9-1/2 12
16 - - - 8 16 16 1-8 1-1/8-8 - - - 3-3/4 10 13-1/2
18 - - - 8 16 16 1-1/8-8 1-1/4-8 - - - 4 11 13-3/4
20 - - - 8 20 20 1-1/8-8 1-1/4-8 - - - 4 12 14-1/2
24 - - - 8 20 20 1-1/4-8 1-1/2-8 - - - 4-1/2 14 16-1/2
1. Thread engagement in accordance with ASME B31.3 “Process Piping”.
2. Bolting lengths are based on installation of valve between standard raised face flanges and utilizing flange gaskets with a final compression thickness of 1/8 inch. When gaskets used
have a final compression thickness of less than 1/8 inch, reduce bolting lengths shown by 1/4 inch.
CAUTION
When using an actuator, the actuator
travel stop (or actuator travel, for
actuators without adjustable stops)
must be adjusted so the disc stop in
the valve does not absorb the output
of the actuator. Failure to limit the
actuator travel as described in the
Adjusting the Actuator Travel Stops or
Travel steps can result in damage to
the valve, shaft(s), or other valve
components.
A Type A31A valve is normally shipped as part of an
assembly with an actuator and other accessories
such as a valve positioner. If the valve and actuator
have been purchased separately or if the actuator
has been removed for maintenance, properly mount
the actuator and adjust valve/actuator travel and all
travel stops before inserting the valve into the line.
CAUTION
Damage to the disc will occur if any
pipe flanges or piping connected to
the valve interfere with the disc
rotation path. Be certain to align the
valve accurately to avoid contact
between the disc (key 2) and the
flanges.