WIKA IV10 Mode D'emploi page 14

5. Commissioning, operation
Remove the protection caps of the required process connections.
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Ensure that the sealing faces are clean and do not show any mecha-
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nical damage.
The correct sealing element must be used for the respective
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EN
connection.
Threaded connection
To screw in threaded connections the appropriate tool must only be
applied through the spanner flats provided for this purpose.
The tightening torque is dependent on the process connection and
sealing element used.
Flange connection
Applicable models: IV20, IV21, IV30, IV31, IV50, IV51
Use only the bolts and sealing rings included in delivery:
Models IV20, IV21: 2 bolts, 1 sealing ring
Models IV30, IV31, IV50, IV51: 4 bolts, 2 sealing rings
1. Fix the instrument for valve mounting on the workbench.
2. Apply a small amount of grease on the bolts.
3. Apply a small amount of grease to each sealing ring to hold it in
place.
4. Position the valve manifold on the instrument.
5. To ease the mounting for flange connections with 4 screws, place
two centring pins opposite each other.
6. Screw in 2 bolts and tighten them by hand.
7. If applicable, remove the centring pins used before.
8. Then screw in the other 2 bolts and tighten them by hand.
9. Use the torque spanner and tighten the bolts opposite each other
with an initial torque of 34 Nm.
10. Use the torque spanner and tighten the bolts opposite each other
with the final torque depending on the material.
Final torque for stainless steel: 72 Nm.
Final torque for carbon steel: 87 Nm.
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Instructions for correct process connection mounting can be
found in the relevant standards e.g. IEC 61518
WIKA operating instructions, shut-off valves and valve manifolds