Nor-Cal N-Series Op Lit - Manual (Page 12)

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N-Series Isolation Poppet Valves
Place a small amount of anti-seize
onto the button head screws.
Insert the button head screws.
When all four screws are in place
tighten down and torque to 15 in.
lbs. using a cross pattern.
Now that the screws are torqued
in place it is safe to remove the
vented screw and flat washer
from the top cap. Thread the air
fitting into the stem to complete
the valve.
7.1 Replacing O-Ring Seal
Remove air fitting, if installed.
Install vented screw with large
flat washer [supplied in kit] until
screw stops.
Do NOT overtighten.
(This partially opens the valve
allowing the bellows /actuator
assembly to be removed.) Remove the four button head
screws securing the bellows /
actuator assembly to the body
using a 3/32” hex key.
Grasp actuator top and lift
bellows /actuator assembly out
of body.
Remove and discard the old
bonnet and poppet O-rings.
Avoid scratching the seal
surfaces by using a plastic O-ring
pick to remove the O-rings.
Using an IPA soaked cleanroom
wipe thoroughly clean the
bonnet and poppet O-ring
grooves as shown. Wipe O-rings with IPA and blow
dry with CDA. Evenly apply a
light sheen of Krytox to both
O-rings.
Install the O-rings. Wipe off any
excess Krytox with an IPA soaked
cleanroom wipe.
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Carefully install the sub assembly
into the body. Be sure that the
body O-ring is seated into the
groove.
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