Flowserve BB 1 - Manual (Page 20)

20
Maintenance
– continued –
BB 2... Changing springs
– continued –
Tools
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Spanner socket A. F. 7, 9, 22, 24 mm to DIN 324
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Hinged face spanner A. F. 2-8 mm (for valves with polymer/hard rubber lining)
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Torque spanner 0-60 Nm, 60-20 Nm, DIN ISO 6789
Align semicircular plates. Insert and tighten threaded
bolts.
Mount dual-plate check valve BB 2...
9 0