Installation Of Seals And Assembly Of Valve - SPX FLOW APV DELTA MS4 Instruction Manual

APV
APV_MS4_UK-3_102018.indd
yoke
o-ring
diaphragm support
upper shaft
fan
diaphragm
guide rod
lower shaft
17
11. Service Instructions
11.3.

Installation of seals and assembly of valve

All seals must be provided with a thin layer of grease
before their installation.
guide bushing
1. Insert the guide bush (11) and o-ring (13) in the yoke (9).
Insert the o-ring (15) in the groove of the yoke.
o-ring
Fasten the yoke (9) at the actuator (17).
2. Install the seat seal (2) in the lower valve shaft (3).
(see Service Instructions 11.)
3. Install the o-ring (16) in the fan (6).
Place diaphragm and fan on the upper shaft.
4. Wind the protective pipe over the thread of the guide rod.
5. Pass the guide rod through the upper shaft with diaphragm and fan
until it stops on the lower shaft. Insert the diaphragm support into
the fan.
! Toothing of fan and diaphragm support must interlock.
- Insert the pre-assembled lower shaft with guide rod, diaphragm,
fan, upper shaft and diaphragm support through the yoke (9) and
actuator (17).
The upper shaft must be guided through the guide bush into the
yoke in smooth-running manner. In case of mechanical stiffness,
check the right fit of the guide bush.
Design with control unit and valve position indication Place
the centering washer (21). Apply a drop of a screw locker, e.g. type
Loctite, semi-solid, on the thread of the guide rod. Screw on the
hex. nut (22) and fasten it with a tightening torque of Md = 40 Nm.
Hold up the centering washer during this process.
o-ring
! Control Unit:
!
Valve position indicator: Fasten the metallic actuator screw.
seat seal
Fasten the plastic actuator screw.
MSP4 design
(diaphragm shaft out of PTFE)
pos. 16 and 5 are omitted
Diaphragm valve with „fan support"
UK
DELTA MS4
Instruction Manual UK- rev. 3