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2.5
VALVE BOLT TORQUES
VALVE SIZE
MINIMUM BOLT LENGTH (mm)
DN200
DN250
DN300
2.6
FLANGE ADAPTORS
a. Follow steps a-d from section 2.4 within the user specified flange adaptors
b. Place flange adaptor/valve assembly into the pipeline and slide the retaining collars onto the
pipework, ensuring the flow direction is correct.
c. Tighten the retaining collars as per the adaptor manufacturer specifications and proceed with
commissioning.
MAXIMUM TORQUE PER BOLT (Nm)
420
480
540
54
91
104
29
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