PIETRO FIORENTINI REVAL 182, Use And Maintenance Instructions

Page: 369 / 404

369
REV
AL 182
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR | MAINTENANCE AND FUNCTIONAL CHECKS | REV. 00
EN
Step Action
1
NOTICE!
Make sure the slam-shut device is set to “OFF”.
2 Undo and remove the screws (122) of the pressure switch cover (119).
3 Remove the pressure switch cover (119) together with the gasket (139).
4 Turn the device upside down.
5 Undo and remove the screw (19) and the lever (18).
6 Undo and remove the screws (23).
7 Remove the quick discharge assembly (13, 14, 15, 17).
8
Remove the O-ring (47) from the valve body (3) and lubricate it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
9 Remove the locking flange (15).
10
Remove the O-ring (48) from the shut-off flange (15) and replace it, taking care to lubricate it with synthetic
grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
11
Remove and replace the gasket (16), lubricating it with synthetic grease.
NOTICE!
Orient the lip of the seal (16) towards the cover (15).
12 Remove the intermediate flange (13).
13
Remove the O-ring (48) from the intermediate flange (13) and replace it, taking care to lubricate it with synthetic
grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
14 Undo and remove the screws (24).
15 Lift the valve body (3) together with the valve cover (4).
16 Separate the valve body (3) from the valve cover (4).
17
Remove the O-ring (45) from the valve cover (3) and lubricate it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
18 Pull out the button (11) together with the spring (12),
19
Remove the O-ring (44) from the valve cover (4) and lubricate it with synthetic grease.
NOTICE!
Before inserting the replacement O-ring, clean the retaining slots with a cleaning solution.
20 Fit the button (11) together with the spring (12).
21 Unscrew and remove the stem assembly (5, 6, 7, 8, 9, 10).