www.Fisher.com Fisherr POSI-SEAL™ A81 Rotary Valve The Fisher POSI-SEAL A81 rotary valve with FieldQt rack-and-pinion actuator offers automated on-off, quarter-turn performance. It 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. Line centering clips provide for versatility to mount and align the same wafer style valve body in different piping configurations (ASME and EN ratings). 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. The actuator sizing and selection process is improved by simply reading a table for information. A81 Features Quarter-turn performance– The valve has a square shaft-to-actuator connection and offers automated on-off, quarter-turn performance. Global Standards– The valve meets API, ASME, and EN standards, making it suitable for use in all world areas. An optional mounting bracket provides ISO 5211 actuator mounting capability. PEEK/PTFE bearing as standard– The PTFE-lined PEEK bearing is a low friction, low wear bearing. It allows the valve to operate under high pressure drops for a high cycle life while maintaining low torque. The drop-in bearing design enables fast, easy maintenance. W9479 Improved shaft-disk pinning– The improved expansion pin system ensures there is a positive, durable connection between disk and shaft. This reduces backlash and wear in the drive system, optimizing long-term performance. It also makes disassembly for maintenance quick and simple with no need for special tools. New Spring-Loaded Shaft– The spring in the outboard shaft provides support to the drive train and disk, enabling the shaft to be installed in both horizontal and vertical orientations with no detriment to performance or cycle life. This complements the ability to mount the actuator on the left- or right-hand side, enabling access for any installation. Excellent Emissions Capabilities– The optional ENVIRO-SEALt packing systems, are designed with very smooth shaft surfaces and live-loading to A81 Valve D103301X012 Product Bulletin 21.1:A81 December 2011
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www.Fisher.com
Fisherr POSI-SEAL™A81 Rotary ValveThe Fisher POSI-SEAL A81 rotary valve with FieldQtrack-and-pinion actuator offers automated on-off,quarter-turn performance. It is available inspring-return and double-acting piston designs.
The valve bodymeets PN 10 through PN 40, CL150,and CL300 ratings. Face-to-face dimensionsmeet EN558, API 609, andMSS-SP68 standards. Line centeringclips provide for versatility tomount and align thesamewafer style valve body in different pipingconfigurations (ASME and EN ratings).
The A81 rotary valve features an eccentrically-mounted disk with either soft or metal seal, providingcapability for enhanced shutoff. The interchangeablesealing technology allows for the same valve body toaccept both soft andmetal seals.
The actuator sizing and selection process is improvedby simply reading a table for information.
A81 Features Quarter-turn performance– The valve has a squareshaft-to-actuator connection and offers automatedon-off, quarter-turn performance.
Global Standards– The valvemeets API, ASME, andEN standards, making it suitable for use in all worldareas. An optional mounting bracket provides ISO5211 actuator mounting capability.
PEEK/PTFE bearing as standard– The PTFE-linedPEEK bearing is a low friction, lowwear bearing. Itallows the valve to operate under high pressuredrops for a high cycle life whilemaintaining lowtorque. The drop-in bearing design enables fast,easymaintenance.
W9479
Improved shaft-disk pinning– The improvedexpansion pin system ensures there is a positive,durable connection between disk and shaft. Thisreduces backlash and wear in the drive system,optimizing long-term performance. It alsomakesdisassembly for maintenance quick and simple withno need for special tools.
New Spring-Loaded Shaft– The spring in theoutboard shaft provides support to the drive trainand disk, enabling the shaft to be installed in bothhorizontal and vertical orientations with nodetriment to performance or cycle life. Thiscomplements the ability tomount the actuator onthe left- or right-hand side, enabling access for anyinstallation.
Excellent Emissions Capabilities– The optionalENVIRO-SEALt packing systems, are designed withvery smooth shaft surfaces and live-loading to
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provide improved sealing, guiding, and loadingforce transmission. The seal of the ENVIRO-SEALsystem can control emissions to below 100 ppm(parts per million).
Sour Service Capability– Depending onmaterialselection, some trim and boltingmaterials areavailable for applications involving sour liquids andgases. These constructions comply with NACEMR0175-2002, MR0103, andMR0175 / ISO 15156.Contact your Emerson Process Management salesoffice for more information.
Easy Installation– Line-centering clips engage theline flange bolts to simplify installation and providefor centering of wafer-style valves in the pipeline.End connections are compatible with EN and ASMEstandards.
Excellent Shutoff Regardless of PressureDrop–Boththe S31600 (316 stainless steel) seal ring and thebidirectional PTFE seal ring with pressure-assistingsealing action ensure shutoff regardless of flowdirection.
Long Seal Life– The opening and closing path of theeccentric diskminimizes disk contact with the sealring, thereby reducing seal wear, undue friction,and seating torque requirements. Seefigure 2.
Reliable Flange Gasketing Surface– The sealretainer screws and retention clips are outside thegasket surface of the seal retainer. Spiral-wound orflat-sheet gaskets can be installed between theuninterrupted seal retainer face and the pipelineflange.
Integral Shaft-to-Valve Body Bonding– Standardvalve construction includes conductive packing toprovide electrical bonding for hazardous areaapplications.
Powder paint as standard– The Emerson ProcessManagementt powder paint finish offers anexcellent corrosion-resistant finish to all steel parts.
High Temperature Capability– The valve willoperate at elevated temperatures, with theappropriate trim components.
Shaft Retention– Redundant shaft retentionprovides added protection. The packing follower,anti-blowout ring, and shaft groove interact to holdthe shaft securely in the valve body (see figure 1).
Travel Indication– Additional travel indication canbe achieved by using the indication line on theshaft, along with the disk positionmarkings on thepacking follower (see figure 4).
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 / 300 per ASME B16.34
Valve BodyMaterials
EN 1.0619 steel WCC steel
EN 1.4409 stainless steel CF3M (316L) stainless steel
LCC LCC
CW2M(1) CW2M(1)
M35-2(2) M35-2
Disk MaterialsPTFE or RPTFE(4) Seal
EN 1.4409 stainless steel CF3M stainless steel
CW2M CW2M
M35-2 M35-2
Metal or UHMWPE(3)
SealChrome-plated EN 1.4409 Stainless Steel Chrome-plated CF3M Stainless Steel
End Connections Mates with raised-face flanges per EN 1092-1 Mates with raised-face flanges per ASME B16.5
Valve Body Style Wafer (flangeless) and single flange with tapped or through holes(5)
Face-to-Face Dimensions Meets MSS SP68, API 609, and EN 558 standards
ShutoffPTFE, 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
FlowDirectionStandard (forward flow) is with the seal retainer facing upstream; reverse flow is permissible within specified pressure
drop limitations
Flow Characteristic Approximately linear
Disk Rotation Counterclockwise to open (when viewed from actuator side of valve body) through 90 degrees of disk rotation
Shaft Diameters and ApproximateWeights See table 81. This material is not listed in EN 12516-1 or ASME B16.34. See figure 6 for pressure/temperature ratings.2. This material is not listed in EN 12516-1. See figure 6 for pressure/temperature ratings.3. UHMWPE stands for ultra highmolecular weight polyethylene.4. RPTFE is a reinforced PTFE seal.5. LCC construction is standard in wafer style only. Consult your Emerson Process Management sales office for single flange valve body style information.
Table 2. Materials (Other Valve Components)Component Material
Table 4. Material Temperature CapabilitiesMATERIAL TEMPERATURE LIMITS
PN FLANGES
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 200Metal PTFE —10 to 232 14 to 450
Graphite —10 to 260 14 to 500
R30006 (Alloy 6) or S31600 Nitride Metal Graphite —10 to 400(1) 14 to 752(1)
LCC S17400 or S20910 PEEK / PTFE PTFE PTFE —46 to 232 —50 to 450
1.4409StainlessSteel
S20910 PEEK / PTFE PTFE or RPTFE PTFE or Graphite —46 to 232 —50 to 450
UHMWPE PTFE or Graphite —18 to 93 0 to 200Metal PTFE —46 to 232 —50 to 450
Graphite —46 to 260 —50 to 500
R30006 (Alloy 6) or S31600 Nitride Metal Graphite —46 to 500(1) —50 to 932(1)
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 FLANGES
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 200Metal PTFE —29 to 232 -20 to 450
Graphite —29 to 260 -20 to 500
R30006 (Alloy 6) or S31600 Nitride Metal Graphite —29 to 427(1) -20 to 800(1)
LCC S17400 or S20910 PEEK / PTFE PTFE PTFE —46 to 232 —50 to 450
CF3MStainlessSteel
S20910 PEEK / PTFE PTFE or RPTFE PTFE or Graphite —46 to 232 —50 to 450
UHMWPE PTFE or Graphite —18 to 93 0 to 200Metal PTFE —46 to 232 —50 to 450
Graphite —46 to 260 —50 to 500
R30006 (Alloy 6) or S31600 Nitride Metal Graphite —46 to 454(1) —50 to 850(1)
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 4501. For applications exceeding 316_C (600_F), consult your Emerson Process Management sales office for appropriate disk material selection.
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Figure 5. Material Pressure/Temperature Curves
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Figure 6. Material Pressure/Temperature Curves
1. CW2M is not listed in EN 12516-1 or ASME B16.34. The PN and CL designations are used only to indicate relative pressure-retaining capabilities.2. M35-2 is not listed in EN 12516-1. The PN designations are used only to indicate relative pressure-retaining capabilities.
1
2
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Figure 7. Material Pressure/Temperature Curves
E1140
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Table 5. MaximumAllowable Shutoff Pressure Drops based on Trim (Seal, Shaft, and Bearings), BarNote: Do not exceed the EN or ASME pressure/temperature rating of the valve ormating flanges.
TRIM TEMPERATURE, _C
DN
50 80 100 150 200 250 300
Bar
PTFE or RPTFE SealPEEK/PTFE Bearings
-46 to 6593121149191204232
51.748.538.628.713.810.33.4
51.748.538.628.713.810.33.4
51.748.538.628.713.810.33.4
51.748.538.628.713.810.33.4
51.748.538.628.713.810.33.4
35.235.033.828.713.810.33.4
41.438.835.728.713.810.33.4
UHMWPE SealPEEK/PTFE Bearings
-17 to 376693
51.738.625.9
51.738.625.9
51.738.625.9
51.738.625.9
51.738.625.9
35.235.125.9
41.438.625.9
Metal Seal(1)
Alloy 6 Bearings
-46 to 3793149204260316371427454
18.517.016.015.114.313.813.212.512.1
16.515.114.213.412.812.311.911.611.5
13.912.812.011.410.810.310.09.89.7
12.811.711.010.49.99.59.29.08.9
11.010.19.49.08.58.27.97.77.7
6.86.35.95.65.35.15.04.84.8
7.06.56.15.75.45.25.05.04.9
Metal Seal(1)
S31600/NitrideBearings
-46 to 3793149204260316371427454
19.519.317.015.914.513.813.212.512.1
22.422.422.422.422.422.121.520.720.3
26.126.023.722.721.420.820.219.519.2
20.820.618.717.816.816.215.715.214.9
27.627.627.626.324.623.222.421.821.6
12.812.812.812.812.512.111.811.411.2
8.07.97.16.86.36.15.95.65.4
Metal Seal(1)
PEEK/PTFE Bearings
-46 to 3793149204232260
51.751.750.348.647.224.7
51.751.750.348.647.221.9
51.751.750.348.646.318.5
51.751.750.348.242.617.0
31.031.031.031.031.014.6
17.217.217.217.217.29.1
17.217.217.217.217.29.4
1. Pressure drops shown for metal seals are for forward flow only. For reverse flow withmetal seal, limit pressure drop to 7 bar (100 psi).
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Table 6. MaximumAllowable Shutoff Pressure Drops based on Trim (Seal, Shaft, and Bearings), PsiNote: Do not exceed the EN or ASME pressure/temperature rating of the valve ormating flanges.
TRIM TEMPERATURE, _F
NPS
2 3 4 6 8 10 12
Psi
PTFE or RPTFE SealPEEK/PTFE Bearings
-50 to 150200250300375400450
75070456041620015050
75070456041620015050
75070456041620015050
75070456041620015050
75070456041620015050
51150849041620015050
60056351841620015050
UHMWPE SealPEEK/PTFE Bearings
0 to 100150200
750560375
750560375
750560375
750560375
750560375
511509375
600560375
Metal Seal(1)
Alloy 6 Bearings
-50 to 100200300400500600700800850
268246232219208200192181176
239219206195186178172168167
202185174165157150145142141
185170160151144138134130129
159146137130124119115112111
999186817774727069
1029488837976737271
Metal Seal(1)
S31600/NitrideBearings
-50 to 100200300400500600700800850
283280246230211200192181176
325325325325325321312300295
379377344329311301293283278
301299271258243235228220216
400400400382357337325316313
185185185185182176171165162
116115103989188858179
Metal Seal(1)
PEEK/PTFE Bearings
-50 to 100200300400450500
750750730705685358
750750730705685318
750750730705672269
750750730699618247
450450450450450212
250250250250250132
250250250250250136
1. Pressure drops shown for metal seals are for forward flow only. For reverse flow withmetal seal, limit pressure drop to 7 bar (100 psi).
Table 7. ISO 5211 F Sizes Available with Optional Mounting BracketVALVE SIZE
1. This nominal valve shaft diameter is the shaft diameter through the packing box. Use this diameter when selecting Fisher actuators.2. Valve assembly only.3. 48mm for CL150 and CL300 single flange only.4. Wafer5. Single Flange
FieldQ Actuator Features Simple, modular construction–Makes operationandmaintenance easier. The basic actuator moduleincludes the pistons, rack and pinion gear, springs(for spring-return actuators), housing, and positionindicator. Pneumatic operation is accomplishedwith an ASCO 8551 solenoid valve. The solenoid isactivated by a 120 VAC 60 Hz or 110 VAC 50 Hzsignal. It is padmounted and does not require abracket. The basic actuator features built-in visualposition indication, travel stops for both directions,and a balanced pinion design.
Three Point Suspension System–Three carbon-filledPTFE guide bands provide a low friction bearingsurface for piston alignment and rack support.Elimination ofmetal-to-metal contact betweenpistons and cylinder wall reduces friction foroutstanding cycle life, smooth piston travel, andmaximumpower.
Balanced Piston Design–As part of the design, threeequally spaced bearing surfaces are cast into each
piston. The rack and pinion construction results ineven distribution of bearing loads, optimumgearengagement, and reduced piston tilt. Equal springforce applied to each piston enhances actuator life.
Multiple Constructions–Conversion from doubleacting to spring return, or vice versa, is simple andsafe, thus reducing spare part requirements.Valve/actuator action is also field reversible.
Dual Stop Adjustment– This adjustment is standardon all E Series actuators. The P Series actuators aresupplied with a limit plate adjustment feature.
Dual Piston Design–Air pressure applies a balancedforce across the common pinion gear.Symmetrically balanced center mount constructioneliminates undue stress on the valve stem,bearings, and disk.
For further information, refer to:http://www.emersonprocess.com/valveautomation/fieldq/index.html
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Emerson Process ManagementMarshalltown, Iowa 50158 USASorocaba, 18087 BrazilChatham, Kent ME4 4QZ UKDubai, United Arab EmiratesSingapore 128461 Singapore
www.Fisher.com
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