GMV NGV A3 - Page 52

ENG
NGV A3 VALVE
INSTALLATION, USE AND MAINTENANCE
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10991483 EN - 1.10 26.05.2023
8.3 MAIN ACRONYMS AND ABBREVIATIONS
1
Regulator of the pressure safety valve (pressure limiter)
5
Shut-off valve / Screw for rupture valve test
6
Shut-off valve for pressure gauge exclusion
7
Regulator of the ram pressure (only 2:1 acting jacks)
10
Regulator of the pressure safety valve (hand pump)
BOX
Interface box (NGVA3 / Control panel)
C1
Chamber of the VRP
C2
Inlet chamber
C3
VB outlet chamber
C4
Chamber of the VRP pilot spool
CARD
NGV A3 control card
D
Downward signal
DAL
Levelling auxiliary device (Micro-Levelling)
DN
Downward
FLT
Filter
ISP
Inspection gauge fitting
J
Jack
K
Non-return valve
M, Ma
Motor
M1
Spool of the VRP
MAN
Pressure gauge
ML
Manual lowering button
MP
Motor / pump
MPS
Maximum pressure spool
NGV-A3
NGV A3 Valve (Complete)
OFF
Not powered
ON
Powered
OPP
MPS pilot valve
P
VRP pilot spool
PAM
Hand pump
PT
Pressure transducer
RDY
Ready - Ready signal (card output to control panel)
RO
Oil heating resistance
R/S
1,2
Shut-off valve
1
/ Silencer
2
RT
Motor thermistors
RUN
Run - Start signal (card output to control panel)
S1 (VRP)
Sensor to control the VRP closing
S2 (VBC)
Sensor to control the VB closing
S3 (VBO)
Sensor to control the VB opening
SM
Stepping motor
TO
Oil thermostat
TT
Temperature transducer
UP
Upward / Up - command of starting upward (card to control panel)
V0
Speed: high
V1
Speed: medium
V2
Speed: inspection
V3
Speed: micro-levelling
VAL
Valve NGVA3 (Valve only)
VB
Main flow adjustment valve
VC
Rupture valve
VMD
Downward solenoid valve
VR
Non-return valve (flow)
VR1
Non-return valve (inlet)
VR2
Non-return valve (outlet)
VRP
Non-return valve - controlled
VS
Upward signal
VS1, VS10
Pressure safety valve