UFC 3-460-03
21 JANUARY 2003
setpoint is 80 psi. Set the opening and closing speed control as fast as possible while still
maintaining smooth operation.
FREQUENCY: Quarterly.
10.3.24.4.6. Pressure Control Valve (58AF-3). Check pressure control, opening and closing
rates, and solenoid operation. The typical setpoint is 75 psi. The typical opening and closing
speed is 3 seconds.
FREQUENCY: Quarterly.
10.3.24.4.7. Hydrant Control Valve (362AF-8). Check pressure-reducing control, pressure-
relief control, opening speed, and deadman operation. NOTE: HCV is also located at the
HSV check-out stand.
FREQUENCY: Quarterly.
10.3.24.4.8. Emergency Shut-Off Valve (136AF-9B). Check solenoid operation, DP
control, and quick-closing feature. Verify valve closes within 10 seconds. Solenoids are
energized, except during power failures or when the ESO switch is activated. The typical
setting for differential control is 7 psi.
FREQUENCY: Quarterly.
10.3.24.4.9. Product Recovery Tank Overfill Valve (2129AF). Check the thermal-relief
feature, overfill-protection operation, and ensure the pressure reservoir tank holds pressure.
The typical setting for thermal relief is 200 psi. The OV must be set to close and sound an
alarm in the control room when the tank is 80% full. Ensure the pressure reservoir tank holds
the pump deadhead pressure when the pump is deactivated. NOTE: When the float in the
tank rises and the OV changes position, the pressure in the pressure reservoir tank will
decrease.
FREQUENCY: Semi-annually.
10.3.24.5. Type IV Hot Pit Refueling System.
10.3.24.5.1. High-Level Shut-Off Valve (129AF-3A). When the tank is being filled, check
for proper operation of the high-level control valve. This valve uses a fail-safe closed pilot
system. This means that if the control line ruptures, the main valve will close.
CAUTION: When testing, use the minimum flow rate necessary.
FREQUENCY: Semi-annually.
10.3.24.5.2. Defuel/Flush Valve (58AF-9-1). Check pressure relief, check-valve function,
solenoid operation, and opening and closing speed controls. The typical pressure relief
setpoint is 100 psi. Set the opening and closing speed control as fast as possible while still
maintaining smooth operation.
FREQUENCY: Quarterly.
10.3.24.5.3. Pantograph Pressure Control Valve (PPCV) (58E-47). Check pressure control,
opening and closing rates, and solenoid operation. The typical setpoint is 75 psi. The typical
opening and closing speed is 3 seconds.
FREQUENCY: Quarterly.
10.3.24.5.4. Hydrant Control Valve (362AF-7). Check pressure-reducing control, pressure-
relief control, opening speed, and deadman operation. The typical setting for pressure-
reducing control is 45 psi. The pressure-relief control must close within 5 seconds when
system pressure reaches 50 psi. The typical opening speed is 20 seconds; however, to
dampen the nozzle pressure wave, opening speed may be retarded. When the deadman is
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