Emerson A81 Manual de Instruções

www.Fisher.comFisherr POSI‐SEAL™ A81 Rotary ValveContentsIntroduction 1...Scope of Manual 1...

Instruction ManualD103302X012A81 ValveMay 201110For valves with the ENVIRO‐SEAL packing system:Optimum performance of the ENVIRO‐SEAL packing system i

Instruction ManualD103302X012A81 ValveMay 2011112. Remove the actuator per instructions in separate actuator instruction manuals, then remove the cap

Instruction ManualD103302X012A81 ValveMay 201112Figure 5. Orientation of Bearing TabsBEARING TABBEARING TABBACKSIDE OF VALVE3. Loosen the two packing

Instruction ManualD103302X012A81 ValveMay 201113Key numbers in this procedure are shown in figure 9 unless otherwise indicated.1. Isolate the control

Instruction ManualD103302X012A81 ValveMay 2011141. Isolate the control valve from the line pressure, release pressure from both sides of the valve bo

Instruction ManualD103302X012A81 ValveMay 201115Assembly WARNINGDo not lubricate bearings that will be used for oxygen service, or where the lubricat

Instruction ManualD103302X012A81 ValveMay 201116Figure 7. Sectional of Typical Valve BodyACTUATOR END OF SHAFTPOSITION INDICATION MARK INDICATESAPPROX

Instruction ManualD103302X012A81 ValveMay 2011171. If new bearings (key 6) are required, install and orient them in the valve body, as shown in figur

Instruction ManualD103302X012A81 ValveMay 201118Actuator MountingWith the valve body out of the line, mount the actuator on the valve body in accordan

Instruction ManualD103302X012A81 ValveMay 201119Parts KitsRetrofit Kits for ENVIRO‐SEAL PackingRetrofit kits are available for replacing the packing i

Instruction ManualD103302X012A81 ValveMay 20112Table 1. Fisher A81 Valve SpecificationsSpecifications EN ASMEValve Body Size DN 50, 80, 100, 150, 200,

Instruction ManualD103302X012A81 ValveMay 201120Parts ListNoteFor part numbers not shown, contact your Emerson ProcessManagement sales office.Key Desc

Instruction ManualD103302X012A81 ValveMay 201121Figure 9. Fisher A81 Valve AssemblyGE27325_DSOFTKey Description Part Number 17 Blind Flange 18 Stud 19

Instruction ManualD103302X012A81 ValveMay 201122Figure 10. Fisher A81 Seal Assembly DetailGE27325_D_2FLOW RING CONSTRUCTION ASSEMBLYSOFT SEAL CONSTRUC

Instruction ManualD103302X012A81 ValveMay 201123

Instruction ManualD103302X012A81 ValveMay 201124Emerson Process Management Marshalltown, Iowa 50158 USASorocaba, 18087 BrazilChatham, Kent ME4 4QZ UKD

Instruction ManualD103302X012A81 ValveMay 20113The A81 rotary valve features an eccentrically‐mounted disk with either soft or metal seal, providing c

Instruction ManualD103302X012A81 ValveMay 20114InstallationKey numbers in this procedure are shown in figure 9 unless otherwise indicated. WARNINGAlw

Instruction ManualD103302X012A81 ValveMay 20115sizes. If piping with a smaller inner diameter than specified above is connected to the valve, measure

Instruction ManualD103302X012A81 ValveMay 20116Table 5. Stud Bolt DataVALVE SIZEWAFER STYLE AND SINGLE FLANGE STYLE WITH THROUGH DRILLED HOLESPN 10 PN

Instruction ManualD103302X012A81 ValveMay 20117 WARNINGAn A81 valve body is not necessarily grounded when installed in a pipeline. If the valve is us

Instruction ManualD103302X012A81 ValveMay 20118Figure 4. Packing Arrangement DetailsSTANDARD PACKINGPTFE V‐RINGGRAPHITE RIBBONGE39901‐AGE39986‐ASINGLE

Instruction ManualD103302X012A81 ValveMay 20119 WARNINGAvoid personal injury and property damage from sudden release of process pressure or bursting