Flowserve Edward Cast Steel Bolted Bonnet Valves - Manual (Page 2)

2
Flow Control Division
Edward Valves
Table of Contents
Page
KEY TO ILLUSTRATIONS .......................2
INTRODUCTION TO THIS MANUAL......3
BOLTED BONNET VALVE
FIGURE NUMBERS...............................3
SERVICE PROBLEMS
Packing Chamber leak .....................3
Packing Recommendations ................3
Bonnet Gasket Leak, Bolting Torques ..4
Seat and Disk Joint Leak ...................5
Body Wall Leak ...............................5
Objectionable Vibration, Noise or
Excessive Pressure Drop....................6
Valve Lubrication..............................6
REPAIR PROCEDURES
Valve Body Repairs
Body Bore Guide Rib Repair .............7
Seat and Disk Repairs ......................7
Body Wall Repairs ...........................8
Valve Component Repair
Disk-Piston Assembly Repairs .............9
Gasket Seal Area Repair ..................9
Welding Rod Recommendations.........9
Field Repair Equipment ...................10
DISASSEMBLY PROCEDURES FOR
BOLTED BONNET VALVES
Introduction ...................................11
First Determine the Area of Failure ...11
Page
DISASSEMBLY PROCEDURES FOR
IMPACTOR HANDWHEELS .................11
PROCEDURE FOR REMOVING ELECTRIC
ACTUATORS FROM VALVE BONNETS
Revolving Stem Valves ....................12
Non-Revolving Stem Valves .............12
Electric Operator Limit Switch and
Torque Switch Setting Procedures .....13
Geared Limit Switch .......................13
Torque Switch ................................13
DISASSEMBLY PROCEDURES
FOR VALVE PARTS
Stop and Stop-Check
(Non-Return) Valves ........................14
Piston Lift Check Valves...................14
REASSEMBLY PROCEDURES FOR
BOLTED BONNET VALVES
Introduction ...................................15
Stop and Stop-Check
(Non-Return) Valves ........................15
Piston Lift Check Valves...................15
SUPPLEMENTARY REPAIR
INFORMATION .................................15
INFORMATION REQUEST ..................12
ORDERING PARTS .............................16
KEY TO ILLUSTRATIONS
Ill. No.
Title Page
No. 1 Typical Valve Nomenclature.....5
No. 2 Lapping Equipment ...............10
No. 3 Impactor Handwheel
with Crossarm ......................12
No. 4 Impactor Handwheel with
Adapter...............................12
No. 5 Electric Operator on
Revolving Stem Valve ............13
No. 6 Electric Operator on
Non-Revolving Stem Valve .....13
No. 7 Piston Lift Check Valve...........14