Masoneilan Regulators Models 525 & 526 Manual | c
Copyright 2020 Baker Hughes Company. All rights reserved.
Table of Contents
Safety Information .....................................................................................................................1
1. Introduction ............................................................................................................................2
2. General ...................................................................................................................................2
3. Unpacking ..............................................................................................................................2
4. Installation..............................................................................................................................3
5. Adjustment .............................................................................................................................3
6. Body Disassembly.................................................................................................................3
6.1 525 (Reducing Service)....................................................................................................3
6.2 526 (Back Pressure Service) ...........................................................................................3
7. Maintenance & Repair ...........................................................................................................4
7.1 Failure to shut off
.............................................................................................................4
7.2 Bushing Removal .............................................................................................................4
7.3 Lapping Seats ..................................................................................................................4
7.3.1 525 (Reducing Service) ...........................................................................................4
7.3.2 526 (Back Pressure Service) ...................................................................................5
7.4 Pinning .............................................................................................................................5
7.5 Packing Box .....................................................................................................................5
7.5.1 Carbon/PTFE Rings (Standard)
...............................................................................6
8. Valve Body Reassembly .......................................................................................................6
8.1 525 (Reducing Service)....................................................................................................6
8.2 526 (Back Pressure Service) ...........................................................................................7
9. Actuators ................................................................................................................................7
9.1 Type 10900 Actuators
......................................................................................................7