Flowserve V-377 R4 Edward Valves - Manual (Page 2)

2
Flow Control Division
Edward Valves
Key to Illustrations ...........................................3
Pressure-Seal Valve Figure Numbers ..................3
Introduction ....................................................3
Description of Pressure-Seal
Valve Bonnet Types
(Illustration, description and figure numbers)
Type I .........................................................4
Type II ........................................................5
Type III........................................................6
Type IV .......................................................7
Service Problems
Packing Chamber Leak .................................8
Packing Recommendations ............................8
Pressure-Seal Gasket Leaks..........................10
Pressure-Seal Leak ......................................10
Seat and Disk Joint Leaks ............................10
Body Wall Leaks ........................................12
Objectionable Vibration, Noise or
Excessive Pressure Drop..............................12
Valve Lubrication........................................12
Repair Procedures
Valve Body Repairs ....................................13
Body Bore Gasket Seal Area Repair .........13
Body Bore Guide Rib Repair ...................13
Seat and Disk Repair ..............................14
Body Wall Repair ...................................15
Valve Component Repair ............................15
Disk-Piston Assembly Repair .....................15
Bonnet or Cover Repair...........................16
Welding Rod Recommendations...................16
Field Repair Equipment ...............................17
Disassembly Procedures for
Pressure-Seal Valves
Introduction ...............................................18
First Determine the Area of Failure ...............18
Disassembly Procedures for
Impactor Handles and Handwheels
Non-Ball Bearing Impactor
Handles and Handwheels........................20
Ball Bearing Impactor Handwheels ...........21
Procedures for Removing Limitorque
Operators from Valve Yokes
Revolving Stem Valves or Non-Revolving
Stem Valves with Torque-Only Units...........22
Non-Revolving Stem Valves with
Torque and Thrust Units ...........................23
Procedures for Setting Actuator Torque
and Limit Switches
Limitorque Limit Switch and
Torque Switch Setting Procedures .............24
Geared Limit Switch ............................24
Torque Switch .....................................25
Single Torque Switch ...........................25
Double Torque Switch ..........................25
Torque Switch Setting...........................26
Disassembly Procedures for Yoke Assemblies
Revolving Stem Valves
with Type I Bonnets .................................27
Revolving Stem Valves
with Type II Bonnets ................................28
Non-Revolving Stem Valves
with Type II or III Bonnets.........................28
Valves with Type IV Bonnets .....................28
Procedures for Removing Operator
and Yoke Assembly as a Unit
Revolving Stem Valves
with Type I Bonnets .................................29
Revolving Stem Valves
with Type II Bonnets ................................29
Non-Revolving Stem Valves
with Type II, III or IV Bonnets....................30
Disassembly Procedures for
Bonnet Types
Type I Pressure-Seal Bonnets
– Stop and Stop-Check
(Non-Return) Valves ..............................31
– Piston-Lift Check Valves .........................32
Type II Pressure-Seal Bonnets
– Stop and Stop-Check (Non-Return)
Valves with Revolving Stems ..................33
– Stop and Stop-Check (Non-Return)
Valves with Non-Revolving Stems ...........34
Type III Pressure-Seal Bonnets
– Stop and Stop-Check
(Non-Return) Valves ..............................36
– Piston- Lift Check Valves ........................37
– Tilting Disk Check Valves ......................38
Type IV Pressure-Seal Bonnets
– Stop and Stop-Check
(Non-Return) Valves ..............................39
– Piston-Lift Check Valves .........................41
Assembly of Composite Pressure-
Seal Gaskets .................................................42
Reassembly Procedures
for Metal Pressure-Seal Valves
Introduction...................................................43
Type I Pressure-Seal Bonnets
– Stop and Stop-Check
(Non-Return) Valves ..............................44
– Piston-Lift Check Valves .........................45
Type II Pressure-Seal Bonnets
– Stop and Stop-Check (Non-Return)
Valves with Revolving Stems ..................45
– Stop and Stop-Check (Non-Return)
Valves with Non-Revolving Stems ...........45
Type III Pressure-Seal Bonnets
– Stop and Stop-Check
(Non-Return) Valves ..............................46
– Piston-Lift Check Valves .........................46
– Tilting Disk Check Valves ......................47
Type IV Pressure-Seal Bonnets
– Stop and Stop-Check
(Non-Return) Valves ..............................47
– Piston-Lift Check Valves .........................47
General Information.......................................48
Supplementary Repair Information.......back cover
Ordering Parts...................................back cover
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