Masoneilan 21000 Series Top Guided Globe Valve Instruction Manual | iii
Copyright 2023 Baker Hughes Company. All rights reserved.
Table Of Contents
Important: Safety Warning .............................................................................................................1
1. Introduction .................................................................................................................................3
2. General ........................................................................................................................................3
3. Unpacking ...................................................................................................................................3
4. Installation...................................................................................................................................3
5. Air Piping .....................................................................................................................................4
6. Body Disassembly......................................................................................................................4
6.1 Threaded Trim .......................................................................................................................
4
6.2 Quick-Change Trim ...............................................................................................................
4
7. Maintenance/Repair....................................................................................................................5
7.1 Threaded Seat Ring Removal ...............................................................................................
5
7.2 Bushing Removal ..................................................................................................................
5
7.3 Lapping Seats .......................................................................................................................
5
7.3.1 Threaded Trim ..............................................................................................................
5
7.3.2 Quick-Change Trim ....................................................................................................... 6
7.4 Lo-Db Plug ............................................................................................................................ 6
7.5 Plug Stem Pinning................................................................................................................. 6
7.6 Packing Box ..........................................................................................................................
7
7.6.1 Kevlar/Ptfe Pack. Ring (Standard) ................................................................................
7
7.6.2 Expanded Graphite P. Ring (Option) ............................................................................
8
7.6.3 Le Packing (Low Emission) (Option) ............................................................................
8
7.7 Soft Seat Plug .......................................................................................................................
9
8. Valve Body Reassembly ............................................................................................................9
8.1 Threaded Trim .......................................................................................................................
9
8.2 Quick-Change Trim ............................................................................................................. 10
8.3 High Pressure & Angle Design ............................................................................................ 11
9. Actuators ................................................................................................................................... 11
9.1 Types 87/88 Actuators ......................................................................................................... 11
