February 2018
Installation and Operation Manual
E2K-405-0218 Rev. 2
10
Section 3: Installation
Installation
1.
Unscrew
Locknut
(piece #55) while holding
Bronze Stem Nut
(piece #54) or Steel
Bore and Key Bushing. Remove the
Stem Nut
and
Key
(piece #52).
2.
Lubricate
Stem
. Run
Stem Nut
(piece #54) down
Stem
to verify Acme thread fit.
Remove
Stem Nut
(piece #54) and set aside.
3.
Model 3000-8000 may include thrust base assemblies. See
Appendix
for instructions.
3.2
Mechanical Installation onto the Valve
1.
Lower actuator over
Stem
onto valve flange.
2.
Insert the screws through the valve flange into the actuator and engage at least
one full screw diameter deep into the bottom base.
3.
Tighten to a preload.
See
Appendix
for common bolt tightening torques.
NOTE:
Mounting screws are provided only if Emerson supplied the adapter. Verify screws are
through the adapter; engage a minimum of one screw diameter deep into the actuator
base.
4.
Screw the
Stem Nut
(piece #54) onto the
Stem
until it enters the
Drive Sleeve
.
5.
Place Key (piece #52) in line with the
Drive Sleeve Keyway
. Insert
Key
(piece #52).
6.
Turn the handwheel in the Open direction to pull the
Stem Nut
(piece #54) into
the
Drive Sleeve
until it bottoms out.
NOTE:
Valve will begin to open.
7.
Place the
Locknut
(piece #55) over the
Valve Stem
. Screw the
Locknut
(piece #55) firmly into place against the top of the
Stem Nut
(piece #54)
using a drift to tighten.
8.
Use a number 30 (0.1285) drill bit: drill a hole 3/4 inch (19mm) deep into the
Drive Sleeve
assembly threads for the Locknut Lockpin (piece #56).
Use the groove in the
Stem Nut Locknut
threads as a guide.
9.
Install
Locknut Lockpin
(piece #56) into drilled hole to prevent the
Stem Nut Locknut
(piece #55) from working loose and turning.
NOTE:
When installing, the
Locknut Lockpin
(piece #56) should extend 1/4 inch (6mm) inch
above the
Drive Sleeve
assembly to allow for easy removal.
CAUTION:
Locknut must be screwed very tightly against stem nut.