It is necessary to use a torque wrench to tighten the inlet and outlet flange bolting.
1. A check should be made that the gasket is centered on the flange
2. Tighten to 30% of the nominal torque according to the following figures:
Continue to tighten alternatively until the required torque is reached. This should be done in 3 or 4 steps.
(Nominal tighten torque table p.28)
NOTE: Due to the relaxation of the gasket, it should be checked it 24 to 48 hours after the first installation.
DA (mm)
DB (mm)
DC (mm)
25
50
150
40
80
200
30
80
200
66
100
220
80
150
270
100
150
270
150
200
320
200
250
370
250
300
420
FIGURE 3
FIGURE 4
14
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78 SERIE SAFETY RELIEF VALVE
SARASIN-RSBD
™
