MARCH, 2022
HD 235
PAGE 7 OF 16
HD FIRE PROTECT
PVT. LTD.
SCHEMATIC FOR BASIC WET PILOT TRIM FOR DELUGE VALVE
MODEL - H3 FOR VERTICAL MOUNTING
SCHEMATIC FOR BASIC DRY PILOT TRIM FOR DELUGE VALVE
MODEL - H3 FOR VERTICAL MOUNTING
SCHEMATIC 1
SCHEMATIC 2
ABBREVIATION & SYMBOLS
DV
DELUGE VALVE
G
SPRINKLER ALARM (WMG)
NRV WITH RESTRICTION HEX NIPPLE
M
EMERGENCY RELEASE STATION
PG
PRESSURE GAUGE
VALVE
RN
RESTRICTIOIN NOZZLE (AIR LINE)
OD
OPEN DRAIN
STRAINER
SV
SOLENOID VALVE
DPA
DRY PILOT ACTUATOR
---
BY USER
PS1
LOW AIR ALARM PRESSURE SWITCH
NRV
NON RETURN VALVE
PS2
WATER FLOW PRESSURE ALARM SWITCH
**
OPTIONAL
FLANGE X FLANGE
GROOVE X GROOVE
FLANGE X FLANGE
GROOVE X GROOVE
PG
~
M
OD
INLE
T
OUTL
ET
OD
DV
~
PS2
PG
DPA
RN
LINE
TO DETECTION
OD
AIR SUPPLY
**
PS1
**
PG
NRV
SV
PG
~
M
OD
INLE
T
OUTL
ET
OD
DV
~
PS2
PG
DPA
RN
LINE
TO DETECTION
OD
AIR SUPPLY
**
PS1
**
PG
NRV
SV
**
**
PG
~
M
OD
INLE
T
OUTL
ET
OD
DV
~
TO DETECTION LINE
PG
PS2
**
SV
**
PG
~
M
OD
INLE
T
OUTL
ET
OD
DV
~
TO DETECTION LINE
PG
PS2
**
SV
**
ET-W
ET-D