Technical Specifications

Table of Contents Page
IMPORTANT: SAFETY WARNING .......................................................... .................................................1
1. INTRODUCTION .................................................................................................................................. 2
2. GENERAL 2
3. UNPACKING ......................................................................................................................................... 2
4. INSTALLATION..................................................................................................................................... 2
5. AIR PIPING 3
6. BODY DISASSEMBLY ........................................................................................................................... 3
6.1 THREADED TRIM ...............................................................................................................................................3
6.2 QUICK-CHANGE TRIM ....................................................................................................................................3
7. MAINTENANCE/REPAIR ..................................................................................................................... 3
7.1 THREADED SEAT RING REMOVAL ..............................................................................................................3
7.2 BUSHING REMOVAL ........................................................................................................................................4
7.3 LAPPING SEATS .................................................................................................................................................4
7.3.1 THREADED TRIM.............................................................................................................................4
7.3.2 QUICK-CHANGE TRIM ..................................................................................................................4
7.4 Lo-dB PLUG .........................................................................................................................................................5
7.5 PLUG STEM PINNING ......................................................................................................................................5
7.6 PACKING BOX .....................................................................................................................................................6
7.6.1 KEVLAR/PTFE PACK. RING (STANDARD) ...............................................................................6
7.6.2 EXPANDED GRAPHITE P. RING (OPTION)..............................................................................6
7.6.3 LE PACKING (LOW EMISSION) (OPTION) ...............................................................................7
7.7 SOFT SEAT PLUG ...............................................................................................................................................8
8. VALVE BODY REASSEMBLY ................................................................................................................ 8
8.1 THREADED TRIM ...............................................................................................................................................8
8.2 QUICK-CHANGE TRIM ....................................................................................................................................9
8.3 HIGH PRESSURE & ANGLE DESIGN ..........................................................................................................9
9. ACTUATORS ......................................................................................................................................... 9
9.1 TYPES 87/88 ACTUATORS .............................................................................................................................9
10. BELLOWS SEAL ASSEMBLY ............................................................................................................... 9
10.1 BELLOWS VALVE DISASSEMBLY............................................................................................................14
10.1.1 THREADED TRIM .......................................................................................................................14
10.1.2 QUICK-CHANGE TRIM ............................................................................................................14
10.2 REPAIR .............................................................................................................................................................15
10.2.1 PLUG / STEM BELLOWS / BONNET EXTENSION S/A ................................................15
10.3 PLUG AND SEAT RING SEATING SURFACES ....................................................................................16
10.4 BONNET REASSEMBLY ..............................................................................................................................16
10.5 VALVE BODY REASSEMBLY ......................................................................................................................16
10.6 ACTUATOR TO BODY S/A AND PLUG STEM ADJUSTMENT .......................................................16