Flowserve 2 Series P2 Type - Manual (Page 5)

5
Flow Control Division
Kammer Control Valves
7.2.3 Remove the upper case half (22).
7.2.4 With a suitable press compress the spring set.
7.2.5 Secure the actuator stem (10) against rotating with a
wrench across the flats on the stem’s lower part and remove
the lock nut (24) and nut (32).
7.2.6 Remove following parts:
washer (1), diaphragm (29), piston (28), spring set (30),
spring plate (27), plate (26) and spacer (25).
7.2.7 Replace the parts onto the actuator stem in reverse
order.
7.2.8 Secure the actuator stem (10) from rotating with a wrench
across the flats on the stem’s lower part and retighten the
nut (32) to the torque shown in table 3. Replace locknut
(24) and secure with loctite 221.
7.2.9 Release the press and replace the upper case half.
7.2.10 Insert 3/4 longer (de)compression screws (21) (see table
2) through the upper and lower actuator case halves and
tighten with long nuts (31) in equal measures until the
casing halves contact.
7.2.11 Insert and tighten all remaining short case retaining screws
(20) to a torque value of 12 Nm.
7.2.12 As required replace the long (de)compression screws/nuts
with the short screws/nuts.
7.2.13 As required refit the actuator assembly to the valve as
described in 1.2.
8 DISASSEMBLE AND ASSEMBLE ACTUATOR
(refer to fig. 1)
DANGER: Actuators with “spring-to-close” action can be
disassembled and reassembled by using long
(de)compression screws. A suitable press is required to
disassembled and reassemble actuators with “spring-to-
open” action or to reverse the actuator action.
8.1 DISASSEMBLE ACTUATOR
8.1.1 Actuator action spring-to-close
8.1.1.1 As required remove the actuator from the valve as described
in section 1.1.
8.1.1.2 If long (de)compression screws are not already fitted to
the actuator: on type P2 remove 3 equally spaced case
retaining screws (20), on types P3/P4 remove 4 equally
spaced case retaining screws (20).
8.1.1.3 Insert 3/4 longer (de)compression screws (21) according
to table 1 and tighten the nuts hand tight.
8.1.1.4 Remove all the remaining short case retaining screws (20).
8.1.1.5 Unscrew the long compression screws (21) in equal
measures until the actuator springs are fully decompressed
and the upper case is loose.
8.1.1.6 Remove the upper case half.
8.1.1.7 Secure the actuator stem (10) against rotating with a
wrench across the flats on the stem’s lower part and remove
the lock nut (24) and nut (32).
8.1.1.8 Remove following parts:
spacer (25), plate (26), spring plate (27), spring set (30),
piston (28) diaphragm (29) and washer (1)
8.1.1.9 With a hooked spanner loosen and remove the slotted
nut (9).
8.1.1.10 Remove the guide (4) and upper yoke plate (8).
8.1.2 Actuator action spring-to-open
8.1.2.1 As required remove the actuator from the valve as described
7 REVERSE THE ACTUATOR ACTION
(refer Fig. 1)
DANGER: Actuators with “spring-to-close” action can be
disassembled and reassembled by using long
(de)compression screws. A suitable press is required to
disassembled and reassemble actuators with “spring-to-
open” action or to reverse the actuator action.
7.1 Reverse actuator action from spring-to-close to spring-to-open
7.1.1 As required remove the actuator from the valve as described
in section 1.1.
7.1.2 If long (de)compression screws are not already fitted to
the actuator: on type P2 remove 3 equally spaced case
retaining screws (20), on types P3/P4 remove 4 equally
spaced case retaining screws (20).
7.1.3 Insert 3/4 longer (de)compression screws (21) according
to table 2 and tighten the nuts hand tight.
Actuator Screw length
Type P2 50 mm
Type P3 70 mm
Type P4 110 mm
Table 2
Screw lengths for (de)compression screws
7.1.4 Remove all the remaining short case retaining screws (20).
7.1.5 Unscrew the long compression screws (21) in equal
measures until the actuator springs are fully decompressed
and the upper case is loose.
7.1.6 Remove the upper case half.
7.1.7 Secure the actuator stem (10) against rotating with a
wrench across the flats on the stem’s lower part and remove
the lock nut (24) and nut (32).
7.1.8 Remove following parts:
spacer (25), plate (26), spring plate (27), spring set (30),
piston (28) diaphragm (29) and washer (1)
7.1.9 Replace the parts onto the actuator stem in reverse
order.
7.1.10 With a suitable press compress the spring set.
7.1.11 Secure the actuator stem (10) from rotating with a wrench
across the flats on the stem’s lower part and retighten the
nut (32) to the torque shown in table 2. Replace locknut
(24) and secure with loctite 221.
Actuator Torque
Type P2 20 Nm
Type P3 30 Nm
Type P4 35 Nm
Table 3 Torque value for nut (32)
7.1.12 Release the press and replace the upper case half.
7.1.13 Insert and tighten the case retaining screws (20) to a torque
value of 12 Nm
7.1.14 As required refit the actuator assembly to the valve as
described in section 1.2.
7.2 Reverse actuator action from spring-to-open to spring-to-close
7.2.1 As required remove the actuator from the valve as described
in section 1.1.
7.2.2 Remove all case retaining screws (20).