Flowserve AK 45 - Manual (Page 14)

4
Maintenance
– continued –
Torques for tightening
All torques refer to a room temperature of 0 °C.
. Observe the danger note on page 4!
. Unscrew body screws
A and take the cover E off the body I, Fig. 2
. Unscrew hand purging knob B.
4. Unscrew valve insert F.
5. Unscrew sealing plug L and strainer J.
6. Clean strainer, sealing plug and gasket surfaces.
7. Clean seating surfaces of body and cover.
8. Apply heat-resistant lubricant to all threads, seating surfaces of the valve insert and of the cover
(e. g. WINIX ® 50).
9. Replace gasket H only if there are visual signs of damage.
0. Replace gasket K if there are visual signs of damage.
. Mount new hand purging knob F and tighten with a torque of 40 Nm.
. Mount new valve insert B and tighten with a torque of 90 Nm.
. Put cover on valve body. Tighten body screws evenly with 25 Nm.
4. Mount sealing plug L together with strainer J and tighten with 120 Nm.
Replace hand purging knob and valve insert
Tools
■
Spanner 6 mm A.F., DIN , Form B
■
Spanner 9 mm A.F., DIN , Form B
■
Spanner  mm A.F., DIN , Form B
■
Torque spanner 0-0 Nm, DIN ISO 6789
WINIX ® 50 is a registered trademark of WINIX GmbH, Norderstedt
Item Designation Torque [Nm]
F
Valve insert 0 90
B
Hand purging knob 0 40
A
Body screws 0 5
L
Sealing plug 0