Emerson POSI-SEAL A81 Instruction Manual
Instruction Manual
D103302X012
Fisherr POSI‐SEAL™ A81 Rotary Valve
A81 Valve
May 2011
Contents
Introduction 1...................................
Scope of Manual 1............................
Specifications 2...............................
Description 2.................................
Installation 4....................................
Maintenance 8..................................
Packing Maintenance 9........................
Replacing the Seal Ring Assembly 12..............
Replacing the Disk, Shafts, or Bearings 13..........
Actuator Mounting 18.........................
Parts Ordering 18
Parts Kits 19...................................
Parts List 20...................................
................................
Figure 1. Fisher A81 Valve with FieldQ™ Actuator
W9479
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for the Fisher POSI‐SEAL A81 valve,
DN50 through DN300 or NPS 2 through NPS 12 (figure 1). Refer to separate instruction manuals for information
covering the power on‐off actuator and accessories.
Do not install, operate, or maintain an A81 valve 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 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.
www.Fisher.com
A81 Valve
May 2011
Table 1. Fisher A81 Valve Specifications
Specifications EN ASME
Valve Body Size DN 50, 80, 100, 150, 200, 250, and 300 NPS 2, 3, 4, 6, 8, 10, and 12
Pressure Rating PN 10 to 40 per EN 12516‐1 CL150 and 300 per ASME B16.34
EN 1.0619 steel WCC steel
Valve Body Materials
PTFE or RPTFE
(3)
Disk Materials
End Connections
Valve Body Style Wafer (flangeless) and single flange with tapped or through holes
Face‐to‐Face Dimensions Meets MSS SP68, API 609, and EN 558 standards
Shutoff
Flow Direction
Flow Characteristic Approximately linear
Disk Rotation
1. This material is not listed in EN 12516-1 or ASME B16.34. See table 4 for pressure/temperature ratings.
2. UHMWPE stands for ultra high molecular weight polyethylene.
3. RPTFE is a reinforced PTFE seal.
4. This material is not listed in EN 12516-1. See table 4 for pressure/temperature ratings.
Seal
Metal or
UHMWPE
(2)
Seal
Standard (forward flow) is with the seal retainer facing upstream; reverse flow is permissible within specified
Counterclockwise to open (when viewed from actuator side of valve body) through 90 degrees of disk
EN 1.4409 stainless steel CF3M (316L) stainless steel
EN 1.4409 stainless steel CF3M stainless steel
Chrome‐plated EN 1.4409 Stainless Steel Chrome‐plated CF3M Stainless Steel
Mates with raised‐face flanges
per EN 1092‐1
(1)
CW2M
(4)
M35‐2
CW2M CW2M
M35‐2 M35‐2
PTFE, RPTFE, or UHMWPE seal ring ‐ No visible leakage per MSS SP‐61
S31600 (316 SST) seal ring - 0.1 scfh per unit of NPS (NPS 6 valve = 0.6 scfh)
per MSS SP-61
pressure drop limitations
rotation
Instruction Manual
D103302X012
(1)
CW2M
M35‐2
Mates with raised‐face flanges
per ASME B16.5
Table 2. Valve Size, Shaft Diameter, and Approximate Weight
VALVE SIZE PRESSURE RATING SHAFT DIAMETER
DN NPS EN ASME mm Inches kg Pounds kg Pounds
50 2 PN10‐40 CL150/300 12.7 1/2 4.7 10 6.7 15
80 3 PN10‐40 CL150/300 15.9 5/8 7.5 17 11.2 25
100 4 PN10‐40 CL150/300 19.1 3/4 12.5 28 17.6 39
150 6 PN10‐40 CL150/300 25.4 1 15.7 35 26.5 58
200 8
250 10
300 12
PN10‐16 CL150 31.8 1‐1/4 30.2 67 40.2 89
PN25‐40 CL300 31.8 1‐1/4 33.9 75 46.0 102
PN10‐16 CL150 31.8 1‐1/4 38.9 86 50.5 111
PN25‐40 CL300 31.8 1‐1/4 51.8 114 79.2 175
PN10‐16 CL150 38.1 1‐1/2 68.7 151 98.3 217
PN25‐40 CL300 38.1 1‐1/2 76.6 169 104.6 231
Wafer‐Style Single‐Flange
APPROXIMATE WEIGHT
Description
The A81 rotary valve with FieldQ rack‐and‐pinion actuator offers automated on‐off, quarter‐turn performance. FieldQ
is available in spring‐return and double‐acting piston designs.
The valve body meets PN 10 through PN 40, CL150, and CL300 ratings. Face‐to‐face dimensions meet EN 558, API
609, and MSS‐SP68 standards. Retainer clips provide for versatility to mount and align the same wafer style valve body
in different piping configurations (ASME and EN ratings).
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D103302X012
A81 Valve
May 2011
The A81 rotary valve features an eccentrically‐mounted disk with either soft or metal seal, providing capability for
enhanced shutoff. The interchangeable sealing technology allows for the same valve body to accept both soft and
metal seals.
Table 3. Material Temperature Capabilities
MATERIAL TEMPERATURE
EN Materials
Valve Body Shaft Bearing Lining and Jacket Seal Packing _C _F
1.0619 Steel S17400 or
S20910
PEEK / PTFE
PTFE or RPTFE PTFE or Graphite –10 to 232 14 to 450
UHMWPE PTFE or Graphite –10 to 93 14 to 200
Metal PTFE or Graphite –10 to 232 14 to 450
R30006 (Alloy 6) or S31600
Metal Graphite –10 to 400
(2)
Nitride
1.4409
Stainless
Steel
S20910 PEEK / PTFE
R30006 (Alloy 6) or S31600
PTFE or RPTFE PTFE or Graphite –10 to 232 14 to 450
UHMWPE PTFE or Graphite –10 to 93 14 to 200
Metal PTFE or Graphite –10 to 232 14 to 450
Metal Graphite –10 to 500
(2)
Nitride
CW2M N10276 PEEK / PTFE PTFE or RPTFE PTFE –10 to 232 14 to 450
M35‐2 N05500 PEEK / PTFE PTFE or RPTFE PTFE –10 to 232 14 to 450
ASME Materials
Valve Body Shaft Bearing Lining and Jacket Seal Packing _C _F
WCC steel S17400 or
S20910
PEEK / PTFE
PTFE or RPTFE PTFE or Graphite –29 to 232 -20 to 450
UHMWPE PTFE or Graphite –18 to 93 0 to 200
Metal PTFE or Graphite –29 to 232 -20 to 450
R30006 (Alloy 6) or S31600
Metal Graphite –29 to 427
(2)
Nitride
CF3M
Stainless
Steel
S20910 PEEK / PTFE
R30006 (Alloy 6) or S31600
PTFE or RPTFE PTFE or Graphite –46 to 232 –50 to 450
UHMWPE PTFE or Graphite –18 to 93 0 to 200
Metal PTFE or Graphite –46 to 232 –50 to 450
Metal Graphite –46 to 454
(2)
Nitride
CW2M N10276 PEEK / PTFE PTFE or RPTFE PTFE –46 to 232 –50 to 450
M35‐2 N05500 PEEK / PTFE PTFE or RPTFE PTFE –46 to 232 –50 to 450
1. Minimum allowable temperature for PN series flanges is -10_C (14_F). See requirements of EN 13445‐2 Annex B for applications below -10_C (14_F) with PN series flanges.
2. For applications exceeding 316_C (600_F), consult your Emerson Process Management sales office for appropriate disk material selection.
LIMITS
(1)
14 to 752
14 to 932
-20 to 800
–50 to 850
(2)
(2)
(2)
(2)
Table 4. Maximum Allowable Inlet Pressure for CW2M and M35‐2 Valves
(1)
TEMPERATURE
150
(2)
300
(2)
PN 10
CW2M
(2)
PN 16
(2)
PN 25
(2)
PN 40
(2)
PN 10
(2)
PN 16
_C Bar Bar
–46 to 38
50
100
150
200
232
20.0
19.5
17.7
15.8
13.8
12.7
51.7
51.7
51.5
50.3
48.3
47.0
10.0
9.9
9.4
9.4
9.1
9.1
16.0
15.9
15.1
15.1
14.6
14.6
25.0
24.8
23.6
23.6
22.9
22.9
40.0
39.6
37.8
37.8
36.6
36.6
9.3
9.3
9.3
9.3
9.0
9.0
15.2
15.2
15.1
14.8
14.5
14.5
_F Psig Psig
–50 to 100
200
300
400
450
1. This material is not listed in EN 12516‐1 or ASME B16.34. Also see the Installation section.
2. The designations PN or 150 and 300 are used only to indicate relative pressure‐retaining capabilities and are not EN or ASME pressure‐temperature rating class designations.
3. This material is not listed in EN 12516-1. Also see the Installation section.
290
260
230
200
185
750
750
730
700
680
145
144
137
133
133
232
230
219
212
212
362
359
342
331
331
580
575
548
530
530
135
135
135
130
130
220
220
215
210
210
M35‐2
(2)
(3)
PN 25
23.8
23.8
23.7
23.4
22.5
22.4
345
345
340
325
325
(2)
PN 40
(2)
37.9
37.9
37.8
37.2
36.3
36.2
550
540
525
525
525
3
A81 Valve
May 2011
Instruction Manual
D103302X012
Installation
Key numbers in this procedure are shown in figure 9 unless otherwise indicated.
WARNING
Always wear protective gloves, clothing and eyewear when performing any installation operations to avoid personal injury.
To avoid personal injury or property damage resulting from the bursting of pressure retaining parts, be certain the service
conditions do not exceed either the valve body rating or the flange joint rating, or other limits given in table 1 or on the
nameplate. Use pressure‐relieving or pressure‐limiting devices to prevent the service conditions from exceeding these
limits.
If installing into an existing application, also refer to the WARNING at the beginning of the Maintenance section on page 8
in this manual.
CAUTION
The valve configuration and construction materials were selected to meet particular pressure, temperature, pressure drop,
and controlled fluid conditions specified in the customer's order. Because some valve body/trim material combinations are
limited in their pressure drop and temperature range capabilities, do not apply any other conditions to the valve without
first contacting your Emerson Process Management sales office.
The maximum allowable inlet pressures for steel and stainless steel valve bodies are consistent with the
pressure‐temperature ratings shown in table 1, except where further limited by the trim and packing material
temperature capabilities given in table 3. Valves are also available in CW2M and M35‐2 valve body materials. The
CW2M valve body material is not listed in EN 12516-1 or in ASME B16.34. The M35-2 valve body material is listed in
ASME B16.34, but is not listed in EN 12516-1. Valve bodies constructed of these materials mate with EN and ASME
flanges, but must not be installed in systems requiring conformance to EN or ASME standards if not included in EN or
ASME pressure/temperature ratings. Maximum allowable inlet pressures for A81 valve bodies made of CW2M or
M35‐2 construction materials are shown in table 4.
1. Install a three‐valve bypass around the control valve assembly if continuous operation is necessary during
inspection and maintenance of the valve body.
2. Inspect the valve body to be certain it is free of foreign material.
3. The valve is normally shipped as part of a control valve assembly, with an actuator mounted on the valve body.
If the valve body and actuator have been purchased separately or if the actuator has been removed for maintenance,
mount the actuator, and adjust actuator travel before inserting the valve body into the line. This is necessary due to
the measurements that must be made during the actuator adjustment process. Refer to the Actuator Mounting
section on page 18 of this manual and to the separate actuator instruction manual for mounting and adjusting
instructions before proceeding.
4. Inspect adjacent pipelines to be certain they are free of any foreign material, such as pipe scale or welding slag, that
could damage the valve body seating surfaces.
CAUTION
Damage to the disk (key 3) will occur if any pipe flanges or piping connected to the valve body interfere with the disk
rotation path. However, the disk can be rotated without interference when the valve body is installed between adjacent
pipe flanges or piping that has an inside diameter equal to or greater than either schedule 80 pipe or compatible EN pipe
4
Instruction Manual
D103302X012
sizes. If piping with a smaller inner diameter than specified above is connected to the valve, measure carefully to be certain
the disk rotates without interference before putting the valve into operation.
A81 Valve
May 2011
5. Flow is in the standard direction when the seal retainer (key 2) is facing upstream. Standard flow direction is also
indicated by the flow direction arrow cast into the valve body. Flow in the reverse direction is permissible within
allowable pressure drop limits.
CAUTION
A81 disk rotation is counterclockwise to open (when viewed from the actuator side of the valve body, see figure 7) through
90 degrees of disk rotation. Rotating the disk (key 3) past either the open or closed position could damage the seal and disk
sealing surfaces and could cause the disk to jam in the seal retainer.
6. With the disk in the closed position, install line flange gaskets, and insert the valve between the pipeline flanges.
Use either flat sheet gaskets or spiral‐wound gaskets with compression‐controlling centering rings. Spiral‐wound
gaskets without compression‐controlling centering rings are not recommended for this purpose.
7. Depending on valve size and pressure rating, the wafer style valve is centered in the pipeline using either retainer
clips or the flange bolt holes. (For valves that have four flange bolt holes in the valve body (key 1), each hole
engages one corresponding line flange stud.) Insert the valve between the flanges and use either the retainer clips
or install two or more line flange studs into the line flanges to help hold the valve in position while centering the
valve. Carefully center the valve on the flanges to ensure disk clearance.
D Select and install two pipeline gaskets.
Note
Lubricate line flange studs before inserting them into flanges. If necessary, provide additional support for the control valve
assembly because of its combined weight.
WARNING
For single flange valve bodies with threaded line bolt holes, personal injury and property damage could result from sudden
release of process pressure if line bolts are not properly installed. To ensure proper line bolt thread engagement, line studs
must be centered in the threaded section of the valve body so that each stud has equal thread engagement in the body. See
figure 2.
8. After centering the valve body, first lubricate and then install the remaining line flange bolting to secure the valve in
the pipeline. Tighten the nuts to the line flange studs in a crisscross pattern to ensure proper alignment of valve,
gaskets, and flanges.
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A81 Valve
May 2011
Instruction Manual
D103302X012
Table 5. Stud Bolt Data
VALVE SIZE
DN
50 4 M16X2 125 4 M16X2 125 4 M16X2 130 4 M16X2 130
80 8 M16X2 140 8 M16X2 140 8 M16X2 150 8 M16X2 150
100 8 M16X2 150 8 M16X2 150 8 M20X2.5 160 8 M20X2.5 160
150 8 M20X2.5 160 8 M20X2.5 160 8 M24X3 180 8 M24X3 180
200 8 M20X2.5 170 12 M20X2.5 170 12 M24X3 190 12 M27X3 210
250 12 M20X2.5 180 12 M24X3 190 12 M27X3 210 12 M30X3.5 230
300 12 M20X2.5 190 12 M24X3 200 16 M27X3 230 16 M30X3.5 250
VALVE SIZE
DN
50 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
80 16 M16X2 85 16 M16X2 85 16 M16X2 90 16 M16X2 90
100 16 M16X2 90 16 M16X2 90 16 M20X2.5 100 16 M20X2.5 100
150 16 M20X2.5 110 16 M20X2.5 110 - - - - - - - - - - - - - - - - - -
200 16 M20X2.5 110 24 M20X2.5 110 24 M24X3 120 - - - - - - - - -
250 24 M20X2.5 120 24 M24X3 120 24 M27X3 130 - - - - - - - - -
300 24 M20X2.5 120 24 M24X3 130 24 M27X3 140 24 M30X3.5 150
VALVE SIZE
NPS
2 4 5/8‐11 5 8 5/8‐11 5.25 - - - - - - - - - - - - - - - - - -
3 4 5/8‐11 5.75 8 3/4‐10 6.5 8 5/8‐11 4.00 16 3/4‐10 4.25
4 8 5/8‐11 6 8 3/4‐10 7 16 5/8‐11 4.00 16 3/4‐10 4.50
6 8 3/4‐10 6.5 12 3/4‐10 7.5 16 3/4‐10 4.25 24 3/4‐10 4.75
8 8 3/4‐10 7 12 7/8‐9 9 16 3/4‐10 4.50 24 7/8‐9 5.50
10 12 7/8‐9 8 16 1‐8 10 24 7/8‐9 5.00 32 1‐8 6.50
12 12 7/8‐9 8.5 16 1‐1/8‐8 11 24 7/8‐9 5.25 32 1‐1/8‐8 7.00
No. of
Stud
Bolts
No. of
Stud
Bolts
WAFER STYLE AND SINGLE FLANGE STYLE WITH THROUGH
No. of
Stud
Bolts
PN 10 PN 16 PN 25 PN 40
Size Dia
&
Thread,
mm
PN 10 PN 16 PN 25 PN 40
Size Dia
&
Thread,
mm
CL150 CL300 CL150 CL300
Size Dia
&
Thread,
Inch
WAFER STYLE AND SINGLE FLANGE STYLE WITH THROUGH DRILLED HOLES
A
Dimen‐
sion,
mm
Dimen‐
sion,
mm
DRILLED HOLES
Dimen‐
sion,
Inch
No. of
B
No. of
A
No. of
Stud
Bolts
Stud
Bolts
Stud
Bolts
Size Dia
&
Thread,
mm
SINGLE FLANGE STYLE (THREADED HOLES)
Size Dia
&
Thread,
mm
Size Dia
&
Thread,
Inch
A
Dimen‐
sion,
mm
B
Dimen‐
sion,
mm
A
Dimen‐
sion,
Inch
No. of
Stud
Bolts
No. of
Stud
Bolts
No. of
Stud
Bolts
Size Dia
&
Thread,
mm
Size Dia
&
Thread,
mm
SINGLE FLANGE STYLE (THREADED HOLES)
Size Dia
&
Thread,
Inch
A
Dimen‐
sion,
mm
B
Dimen‐
sion,
mm
B
Dimen‐
sion,
Inch
No. of
Stud
Bolts
No. of
Stud
Bolts
No. of
Stud
Bolts
Size Dia
&
Thread,
mm
Size Dia
&
Thread,
mm
Size Dia
&
Thread,
Inch
A
Dimen‐
sion,
mm
B
Dimen‐
sion,
mm
B
Dimen‐
sion,
Inch
Figure 2. Stud Bolts for Installation (also see table 5)
A3887-1
WAFER‐STYLE VALVE BODY SINGLE FLANGE‐STYLE VALVE BODY (THREADED HOLES)
6
A
CENTERLINE OF
THREADED SECTION
A3886-1
B
B
Instruction Manual
D103302X012
A81 Valve
May 2011
WARNING
An A81 valve body is not necessarily grounded when installed in a pipeline. If the valve is used in a flammable or hazardous
atmosphere or for oxygen service, an explosion could result due to a discharge of static electricity from the valve
components. To avoid personal injury or property damage, always make sure the valve body is grounded to the pipeline
before putting the control valve assembly into operation in a flammable or hazardous atmosphere.
Note
Standard packings for the A81 valve are composed of all conductive packing rings (graphite ribbon packing) or partially conductive
packing rings (such as a carbon‐filled PTFE female adaptor with PTFE V‐ring packing) to electrically bond the shaft to the valve
body for hazardous area service. For oxygen service applications, provide alternate shaft‐to‐valve body bonding according to the
following step.
9. For oxygen service applications, attach the bonding strap assembly (key 131, figure 3) to the shaft with the clamp
(key 130, figure 3), and connect the other end of the bonding strap assembly to the valve body with the cap screw
(key 35). Secure each cap screw with a hex nut (key 36).
WARNING
Personal injury could result from packing leakage. Valve packing was tightened prior to shipment; however, the packing
might require some readjustment to meet specific service conditions.
Figure 3. Optional Shaft‐to‐Valve Body Bonding Strap Assembly
7
A81 Valve
May 2011
Figure 4. Packing Arrangement Details
Instruction Manual
D103302X012
GE39901‐A
PTFE V‐RING
GE39986‐A
GRAPHITE RIBBON
STANDARD PACKING
GE40113‐A
SINGLE PTFE PACKING
GE40118‐A
GRAPHITE PACKING
ENVIRO‐SEAL PACKING
NOTES:
1
WITH CONDUCTIVE PACKING, THE FEMALE ADAPTOR IN PTFE V‐RING PACKING IS CARBON‐FILLED PTFE.
2
APPLY LUBRICANT.
3
THESE TWO SURFACES SHOULD REMAIN PARALLEL AS YOU ALTERNATELY AND EVENLY TIGHTEN THE PACKING NUTS (KEY 28).
Valves with ENVIRO‐SEALt packing systems will not require this initial re‐adjustment. See ENVIRO‐SEAL Packing
System for Rotary Valves Instruction Manual (D101643X012) for packing instructions. If you wish to convert your
present packing arrangement to ENVIRO‐SEAL packing, refer to the retrofit kits listed in the parts kit sub‐section on
page 19 of this manual.
Maintenance
Valve body parts are subject to normal wear and must be inspected regularly and replaced as necessary. The frequency
of inspection and replacement depends upon the severity of service conditions. Instructions are given in this section
for: replacing trim components, changing disk rotation or valve action, and mounting and adjusting the actuator.
As used in these instructions, actuator refers to power actuators (such as pneumatic diaphragm, piston actuators, and
rack and pinion actuators).
8
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