Emerson Fisher EHD, Инструкция по эксплуатации

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Fisher
™
EHD, EHS, and EHT Valves
NPS 1-1/2x1 through NPS 8x6
Contents
Introduction 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of Manual 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Specifications 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Educational Services 3 . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Packing Lubrication 7 . . . . . . . . . . . . . . . . . . . . . . . . . .
Packing Maintenance 7 . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing Packing 8 . . . . . . . . . . . . . . . . . . . . . . . .
Trim Removal 12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valve Plug Maintenance 14 . . . . . . . . . . . . . . . . . . . . .
Lapping Seats 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trim Replacement 16 . . . . . . . . . . . . . . . . . . . . . . . . . .
Retrofit: Installing C‐seal Trim 21 . . . . . . . . . . . . . . . .
Replacement of Installed C‐seal Trim 24 . . . . . . . . . . .
Trim Removal (C‐seal Constructions) 24 . . . . . . .
Lapping Metal Seats (C‐seal Constructions) 26 . .
Remachining Metal Seats
(C‐seal Constructions) 26 . . . . . . . . . . . . . . . . .
Trim Replacement (C‐seal Constructions) 26 . . .
Parts Ordering 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts Kits 28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Parts List 29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 1. Fisher EH Valve with 657 Actuator
W3387
Introduction
Scope of Manual
This instruction manual includes installation, maintenance, and parts information for the Fisher EHD, EHS, and EHT
control valves in NPS 1-1/2 x 1 through NPS 8x6. Refer to separate manuals for instructions covering the actuator,
positioner, ENVIRO‐SEAL
™ packing, HIGH‐SEAL packing, and accessories.
Do not install, operate, or maintain EHD, EHS, or EHT valves without being fully trained and qualified in valve, actuator,
and accessory installation, operation, and maintenance.
To avoid personal injury or property damage, it is important
to carefully read, understand, and follow all the contents of this manual, including all safety cautions and warnings. If
you have any questions about these instructions, contact your Emerson sales office or Local Business Partner before
proceeding.
Unless otherwise noted, all NACE references are to NACE MR0175‐2002.
Instruction Manual
D100394X012
EH (1-1/2x1 through 8x6)
July 2017