Flowserve BK 37 - Manual (Page 13)

3
MOLYKOTE ® is a registered trademark of Dow Corning GmbH, Wiesbaden
All torques are based at 20 °C room temperature.
Item Designation Torque [Nm]
B / C
Thermovit regulator 00
G
Hexagon nut 60
GESTRA steam traps type BK 37... BK 28... and BK 29... do not require any special maintenance.
However, if used in new installations which have not been rinsed it may be necessary to check and
clean the trap.
Maintenance
. Remove cover A from body F, Fig. 2, Fig. 3
2. Remove regulator B or C using a spanner.
3. Unscrew regulator B or C and take off strainer D.
4. Clean body, regulator, cover and strainer.
5. Clean gasket seating surfaces and insert new gasket
E.
6. Clean sealing surfaces of regulator B or C and body F.
7. Replace strainer D.
8. Screw in regulator B or C and tighten with a torque of 100 Nm.
9. Apply heat-resistant lubricant to threads of the expansion bolts H (use for instance MOLYKOTE
HSC+®)
0. Replace cover A. Insert expansion bolts H and tighten hexagon nuts G at room temperature in
diagonally opposite pairs with a torque of 225 Nm.
Replacing Regulator
n
Spanner A.F. 24 mm, DIN 33, form B
n
Torque spanner 20-00 Nm, ISO 6789
n
Torque spanner 80-400 Nm, ISO 6789
Tools
Torques required for tightening