Swagelok IPT Series User manual

NV Kit Contents
This kit contains one of the stem assemblies shown below. It is preassembled as shown.
NOTE: The image below may vary from the actual stem assembly. Compare kit contents with the
original stem assembly in the valve.
IPT Series Manual NV Needle Valve
Service Instructions
Single-Piece Stem Assembly
Two-Piece Stem Assembly
or
(2) Lubricant Packets
Tools Required
Part Size Tool
Valve body —
Handle jam nut 5/8 in.
Bonnet
capable of
150 ft·lb (203 N·m)
See Table 1
Set screw and
socket head
cap screw
5/8 in.
Bench vise
Torque wrench
Crow’s foot adapter
Hex bit
Hex socket
Valve Size
Crow’s Foot Size
in.
NV9M 13/16
NV12M 1 1/8
NV (12F, 12N, 16M, 16N) 1 3/8
Table 1

Tee handle assembly
Bonnet
Stem assembly
(kit component)
Valve body
Exploded View
Valve Assembly
Stem
Assembly
Stem sleeve
Socket head
cap screw
Locking device
Stem jam nuts and
upper bearing washer
Handle jam nut
Set screw
Spring lock washer
2
*Bold indicates kit component
Packing
sequence

Valve Reassembly
1. Apply the supplied MS-LTK-NNS lubricant liberally
to the rst four outside diameter (OD) threads, the
bottom face of the bonnet, and to the OD threads
of the stem sleeve. Also apply the MS-LTK-NNS
lubricant lightly to the top face of the stem sleeve.
Apply the supplied MS-LTK-WL8-1 lubricant lightly
to the packing sequence area.
•WARNING
Before removing the valve from service,
to avoid personal injury, you must:
• Depressurize the system.
• Cycle the valve.
• Purge system to remove any residual
system media left in valve.
NOTICE
Do not scratch any sealing surfaces while
following these instructions. Scratches
on sealing surfaces may affect valve
performance.
Disassembly
1. Remove the valve from the system.
2. Place the valve in a vise.
3. Loosen and remove the spring lock washers,
handle jam nuts, and set screws.
4. Remove the tee handle assembly.
5. Loosen and remove the locking device and socket
head cap screw.
6. Loosen and remove the bonnet, and remove the
stem assembly.
7. Discard the stem assembly.
8. Clean all remaining components: handle assembly,
bonnet, and valve body.
3
Instructions
Tee handle assembly
Bonnet
Stem assembly
Valve body
Handle
jam nut
Set screw
Spring lock
washer
Lock nuts and
upper bearing washer
Socket head
cap screw
Locking device
Bonnet
Stem assembly
Stem jam nuts and
upper bearing washer
2. Assemble the bonnet onto the stem sleeve until
bottomed.
NOTICE
To prevent damage to the sealing area during
reassembly, thread the stem to the fully open
position prior to insertion into the valve body.
NOTICE
The stem assembly ships with the stem jam
nuts and upper bearing washer appropriately
tightened. Do not tighten the stem jam nuts
and upper bearing washer any further; the stem
assembly needs to move freely.
Liberal MS-LTK-NNS
lubricant
Liberal MS-LTK-NNS
lubricant Light MS-LTK-WL8-1
lubricant
Bonnet
Stem sleeve
Packing
sequence
Light MS-LTK-NNS
lubricant

5. Apply the supplied MS-LTK-NNS lubricant lightly
to the OD threads of the tee handle set screws and
handle jam nuts.
3. Insert the stem assembly into the valve body.
Torque the bonnet according to the torque chart
below.
Note: The stem series is identied by the valve
ordering number. Example: NVIZN1VD10
For additional information, see www.swagelok.com.
Swagelok — TM Swagelok Company
©2019 Swagelok Company
MS-CRD-0225, Rev-, June 2019
Component
Required Torque
ft·lb (N·m)
Tee handle set screw 8 to 10 (10.8 to 13.5)
Handle jam nut 8 to 10 (10.8 to 13.5)
Required Torque
ft·lb (N·m)
Stem Series Bonnet
A45 to 50 (61.0 to 67.7)
B70 to 75 (94.9 to 101)
C90 to 95 (122 to 129)
D120 to 125 (163 to 169)
E45 to 50 (61.0 to 67.7)
F65 to 70 (88.1 to 94.9)
M60 to 65 (81.3 to 88.1)
T145 to 150 (197 to 203)
W60 to 65 (81.3 to 88.1)
Y60 to 65 (81.3 to 88.1)
6. Place the handle assembly on top of the stem
assembly. Align the ats on the handle assembly
with the ats on the stem assembly.
7. Insert the spring lock washers, handle jam nuts,
and set screws. Tighten the set screws and
handle jam nuts according to the torque chart
below.
Bonnet
Stem assembly
Valve body
4. Reassemble the locking device and socket head
cap screw. Torque the socket head cap screw
according to the torque shown below.
Required Torque
ft·lb (N·m)
Socket Head Cap Screw
All 2.5 to 4.0 (3.3 to 5.4)
Socket head
cap screw
Locking device
Handle
jam nut
Set
screw
Light MS-LTK-NNS
lubricant
Light MS-LTK-NNS
lubricant
Set screw Handle jam nut
Handle jam nut
Set screw
Spring lock washer
Handle jam nut
Set screw
Spring lock washer
Tee handle assembly
Stem assembly
Stem
assembly
series