Flow Safe F8000 Series - Page 35

INSTALLATION, OPERATION, &
MAINTENANCE MANUAL
TITLE: F7000 / 8000 Series Rev. V
Pilot-Operated Safety Relief Valve Page 35 of 41
NOTE: 1. For an F200 snap-acting pilot, pilot valve “reseat” pressure will be that pressure at
which the dome gage repressurizes.
2. For an F100 or F300 modulating pilot, the dome gage will start to increase back to test
gage pressure as soon as test pressure drops below set pressure.
3. For an F500 no-flow modulating pilot, pilot valve “reseat” pressure will be that pressure
at which the dome gage begins to repressurize.
6) To safely remove the test equipment, close the block valve to the external pressure source and
keep the bleed valve open. This will cause system pressure to be routed to the pilot valve.
7) Screw the 1/4” NPT vented plug back into the FTC.
EXTERNAL
PRESSURE
SOURCE,
1/4” NPT
TEST GAGE
(SECONDARY LOCATION)
HOSE
BLEED VALVE
PRESSURE
REGULATOR
BLOCK VALVE
EXTERNAL
PRESSURE
SOURCE,
(NITROGEN
OR AIR)
PILOT VALVE
ASSEMBLY
MAIN VALVE
ASSEMBLY
DOME GAGE
(IF APPLICABLE)
TEST GAGE
(PREFERRED
LOCATION)
TO PILOT
VALVE
TO PILOT
VALVE
VENTED PLUG
SHUTTLE
PISTON
FIELD TEST
CONNECTION
(FTC)
FIELD TEST CONNECTION (FTC) OPERATION
Integral Module (IM) Construction (legacy)
SYSTEM PRESSURE TO VALVE
EXTERNAL (FTC) PRESSURE TO VALVE
SYSTEM
PRESSURE