
API 6D Two - Piece Cast Trunnion
Mounted Ball Valve
Atlas Series
Document Number:
Revision:
Release Date:
IOM: Installation, Operation and Maintenance Manual 2/17
TABLE OF CONTENTS
1SCOPE.............................................................................................................................................................................................3
1.1 RESPONSIBILITY FOR VALVE APPLICATION...................................................................................................................3
1.2 RECEIVING INSPECTION, HANDLING AND STORAGE ..................................................................................................3
2BILL OF MATERIAL....................................................................................................................................................................... 5
3INSTALLATION..............................................................................................................................................................................7
3.1 NAMEPLATE..............................................................................................................................................................................8
3.2 HIGH TEMPERATURE SERVICE........................................................................................................................................... 8
3.3 LOW TEMPERATURE SERVICE ...........................................................................................................................................8
4OPERATION................................................................................................................................................................................... 8
4.1 INITIAL START-UP/COMMISSIONING.................................................................................................................................. 8
4.2 NORMAL OPERATING ACTIVITY..........................................................................................................................................8
4.3 DOUBLE BLOCK AND BLEED OPERATION....................................................................................................................... 8
4.4 BODY CAVITY RELIEVING SYSTEM....................................................................................................................................9
5MAINTENANCE.............................................................................................................................................................................. 9
5.1 VALVE MAINTENANCE IN OPERATION..............................................................................................................................9
5.1.1 STEM LEAKAGE................................................................................................................................................................... 9
5.1.2 SEAT LEAKAGE..................................................................................................................................................................10
5.2 SCHEDULE OF ROUTINE MAINTENANCE.......................................................................................................................10
5.3 VALVE CLEANING..................................................................................................................................................................10
5.4 EMERGENCY REPAIR........................................................................................................................................................... 10
6DISASSEMBLY AND REASSEMBLY INSTRUCTIONS........................................................................................................ 11
6.1 DISASSEMBLY........................................................................................................................................................................11
6.2 RECONDITIONING .................................................................................................................................................................13
6.3 REASSEMBLY.........................................................................................................................................................................13
7PROPER VALVE TESTING........................................................................................................................................................14
7.1 SHELL TEST ............................................................................................................................................................................14
7.2 HYDROSTATIC SEAT TEST.................................................................................................................................................14
7.3 DOUBLE BLOCK AND BLEED (DBB) TEST ......................................................................................................................14
7.4 SUPPLEMENTAL AIR SEAT TEST......................................................................................................................................15
8BOLTS TIGHTENING TORQUE................................................................................................................................................15
9TROUBLESHOOTING................................................................................................................................................................. 15