3
Installation and Operation Manual
Part Number: VA001-507-32, Rev. 1
August 2016
Section 1: Introduction
Introduction
1.4 Abbreviation Definitions
Abbreviations used in this manual and their definitions are listed in the table below:
Table 1. Abbreviation Definitions
Abbreviation Definition
IOM Installation Operation Manual
SCH Self-Contained Hydraulic
ESD Emergency Shutdown
FS Fail-safe
SR Spring-Return
DA Double-Acting
MAWP Maximum Allowable Working Pressure
MOP Maximum Operating Pressure
STC Separate Terminal Chamber
PBM Pushbutton Module
LDM Local Display Module
RDM Remote Display Module
CBM Circuit Breaker Module
PCB Printed Circuit Board
LS Limit Switch
PS Pressure Switch
NC Normally Closed
NO Normally Open
CCW Counterclockwise
CW Clockwise
OL Overload
PPE Personal Protective Equipment
GA General Arrangement Drawing
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