Install Instructions

Document No. 129-216
Installation Instructions
September 29, 2009
Page 2 of 6 Siemens Industry, Inc.
Prerequisites, Continued
WARNING:
Isolate the valve so that the medium (water,
steam, etc.) will not leak out of the valve
when the valve body is disassembled.
WARNING:
Remove and cap the air line or disconnect
the power to the actuator before removing
the actuator from the valve.
Installation
Normally open valves
Removing the Packing and the Stem and Plug
Assembly. (See Figure 1)
VF0135R1
PACKING
CARTRIDGE
KIT
CAP
SCREW
GASKET
GROOVE
ANTI-
SPIN
PIN
PACKING
CARTRIDGE
COPPER
GASKET
STEM
AND
PLUG
ASSEMBLY
BONNET
FLANGE
VALVE
BODY
PACKING
SPRING
PACKING
BEARING
Figure 1. Normally Open Valve.
1. Remove the actuator by following the
instructions included in the packing cartridge kit.
2. Using a 1-1/2 inch wrench, remove the packing
cartridge assembly.
3. Remove and discard the copper gasket. The
gasket cannot be reused.
4. Remove the cap screws in the bonnet flange.
See Table 1 for the proper wrench size. Save
the cap screws.
5. Lift the bonnet flange from the valve body.
Remove and discard the gasket.
6. Remove and discard the packing spring and
packing bearing.
7. Remove and discard the stem and plug
assembly.
8. Clean the bonnet threads to remove any
buildup.
9. Inspect the seat for damage.
Replacing the Stem and Plug Assembly and
Packing
1. Locate the groove on the plug and align it with
the anti-spin pin in the seat. See Figure 2.
Figure 2. Aligning the Groove and Pin.
2. Insert the new stem and plug assembly into the
valve body making sure that the anti-spin pin is
in the plug groove.
CAUTION:
Be careful not to nick the seat.
3. Select the gasket that is marked for the
appropriate ANSI Class valve. Place the gasket
on the valve body.