Flowserve 132000 LinedFlow Linear Lined Globe Control Valve IOM - Manual (Page 11)

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User Instructions LinedFlow - KMENIM3202-02 01/12
11
STOP!
STOP!
Table 8: Tightening Torque for Packing Nut (Nm)
20 DISaSSEMBLE aND aSSEMBLE VaLVE
20.1 DISaSSEMBLE VaLVE
(see Fig. 2)
DaNgER: As toxic or hazardous substances could be
present, release all pressure in the system and drain all
process substances. If necessary, decontaminate valve.
Keep hands, hair and clothing away from moving parts.
Wear face and eye protection. Failure to observe can lead to
severe injuries.
20.1.1 Carefully loosen test connection and check whether medi-
um has collected in bellows cap (bellows defective).
20.1.2 Remove bolts/nuts from bonnet and remove bonnet.
Note: Due to packing friction the bellows/plug is usually
pulled out when the bonnet is removed. In such cases, hold
the bellows/plug so that it cannot fall and be damaged.
20.1.3 If the bellows remains in the housing, it can be pried out
carefully with two screwdrivers.
20.1.4 Without stretching the bellows, remove the plug/bellows
assembly from the bonnet. Press guides, packing and
spacer out of packing chamber from below with a punch
(the punch diameter should be slightly larger than the plug
stem).
20.1.5 If required, pull out thread lock insert with a pair of pliers
and unscrew plug from bellows.
WaRNINg: When the plug is loosened, medium residues
can be released which have leaked through the thread.
20.1.7 Unscrew seat ring with seat ring wrench.
20.1.8 Check sealing edges on seat ring and plug for damage. The
sealing surfaces must be clean and free of damage.
WaRNINg: To avoid damage to the seat, plug or plug stem,
observe the preceding instructions exactly.
20.2 aSSEMBLE VaLVE
(see Fig. 2)
20.2.1 Replace all worn or damaged parts. Use only genuine
FLOWSERVE parts. Parts to be reused must be clean.
Always replace parts subject to wear such as gaskets,
packings and O-rings.
20.2.2 Insert seat ring and tighten (see Table 6 for torque).
20.2.3 Screw plug onto bellows hand-tight and insert a new thread
lock insert. Cut off thread lock insert so that approx. 3 mm
extends from the hole.
20.2.4 Carefully insert plug stem with bellows into bonnet.
20.2.5 Position new O-ring on inclined surface on top of housing.
20.2.6 Position bonnet slowly and absolutely upright on body, to
avoid damage to seat/plug.
20.2.7 Insert bonnet mounting bolts and tighten hand-tight in
crisscross pattern.
20.2.10 Tighten all bolts to specified torques in crisscross pattern
with torque wrench (see Table 7).
20.2.11 Replace packing by inserting packing rings one at a time
tapping each one down with a suitable bushing.
NOTE: ensure that the gaps in the packing rings are distri-
buted evenly around the circumference in the packing box
(gaps not in line).
Different packings and fitting sequencess are shown in the
spare parts list.
20.2.12 Insert packing follower and tighten packing nut (see Table 8).
20.2.13 During the subsequent pressure test, ensure that the pres-
sure does not exceed the maximum permissible pressure
for the bellows (PN16). After checking the test connection
for leakage – if present – plug with a plug or appropriate
pressure gauge.
Thread PTFE
M20 x 1,5 1
M30 x 1,5 6
M38 x 1,5 15
M45 x 1,5 17