Flowserve Valtek ShearStream HP Control Valves - Manual (Page 5)

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User instructions - Shearstream HP - VLENIM0027-01 03.08
5
Figure 1: 3 – 12-inch and 16-inch ShearStream HP
Body Assembly with Rotating Post Design
Stationary Post Design
Packing
(Item No. 88)
Packing Stud
(Item No. 09)
Gland Flange
(Item No. 80)
Packing Nut
(Item No. 7)
Shaft
(Item No. 5)
Inboard End
Retainer Retainer O-rings
(Item No. 30) (Item No. 59)
(Item No. 56)
Seals*
Shaft Bearing
(Item No. 83)
Shaft O-ring
(Item No. 6)
(optional)
Body Shaft Pin Ball
(Item No. ) (Item No. 5) (Item No. 50)
Packing Follower
(Item No. 87)
Packing Spacer
(Item No. 93)
Thrust Bearing
(Item No. 53)
(*See Figure 4 for seal configurations and item numbers.)
NOTE: Item numbers correspond directly to the valve‘s bill of material.
Refer to it for specific part numbers.
6 Removing Valve From Line
If an internal problem is suspected with the valve and disas-
sembly is required, remove the valve from the line by proceed-
ing as follows:
WARNING: Depressurize line to atmospheric pressure,
drain all process fluids and decontaminate the valve (if
caustic or hazardous materials are present). Failure to do
so can cause serious injury.
6. Attach a hoist or some means to support the valve.
6. Remove line bolting. Do not attempt to pry line flanges apart
by pushing or pulling on the valve or actuator.
6.3 Slide the valve carefully from the line. To avoid damage to the
gasket surfaces, do not twist the valve.
6.4 After the valve is completely removed from the line, slowly
relieve air pressure from the actuator.
7 Removing Actuator From Body
Sizes 3 – -inch and 6-inch ShearStream valves are de-
signed to be disassembled without removing the Flowserve
actuator, however, removing the actuator is recommended.
Refer to actuator installation, operation, maintenance instruc-
tions, and proceed as follows:
7. Support the actuator assembly before disconnecting it from
the body assembly.
7. Loosen the actuator adjusting screw to release the spring
compression.
7.3 On Valtek rotary actuators with a clamped lever-arm design,
remove the actuator transfer case cover bolts, carefully pry
or slide the cover plate from the transfer case, then loosen
the linkage bolt.
7.4 Remove bolts connecting yoke to body subassembly.
7.5 Slide the entire actuator assembly off the shaft. On Valtek
rotary actuators with a clamped lever-arm design, it may be
necessary to wedge the splined lever arm apart to loosen it
from the shaft splines.
8 DISASSEMBLY AND REASSEMBLY
8.1 Disassembling the Body
Removing the actuator from the body assembly to disas-
semble 3 – -inch and 6-inch bodies is not necessary;
however, this procedure is recommended. On valves with
the clamped lever-arm design loosening the valve shaft from
Post Bearing
(Item No. 84)
O-ring
(Item No. 6)
Post
(Item No. 3)
Post O-ring
(Item No. 64)
(optional)
Plug
(Item No. )
Post Pin
(Item No. )
STOP!