IOM-Ranger
5
FIGURE 3:
Insulated Body
Flangeless Design
NOTE:
The bon net
of in te gral ly flanged
bod ies should also not
be in su lat ed
SECTION IV
compliance with/to Spec. No. S-1134, the
valve is suitable for oxygen service. This
pro ce dure is limited to bodies of SST material
B. Trim
Removal:
Access to the cage assembly with internal trim
pieces may be accomplished without removing the
actuator assembly (AA). Thus, it is not nec es sary
to remove the pack ing set (13) or the stem
subassembly (7) to change internal trims.
NOTE:
Plug (6) must be in the closed position to remove
the trim.
IV. MAINTENANCE
A. General:
1. Maintenance procedures hereinafter are based
upon removal of the valve/actuator unit from
the piping where installed.
2. Owner should refer to owner’s procedures for
re mov al, handling and cleaning of non re us able
parts; i.e. gaskets, suitable solvents, etc.
3. Valves supplied from the factory do not use
any aid to assist in gasket sealing such as oil,
sealant or pipe dope.
4. Valves originally supplied per Opt-55 require
spe cial cleaning procedures. Refer to Cashco
Specification No. S-1134 for details. When in
E. Packing
Check:
1. Ensure that packing flange nuts (22) have not
worked loose during shipment.
2. For non-live loaded construction, hand tight en
the nuts (22) enough to stop any leakage. Do
not over tighten.
3. For live loaded construction, if spacer ring
(29) is loose, tighten both nuts (22) equally
until spacer ring (29) no longer “spins freely”
using two fingers. Rotate both nuts (22)
ad di tion al 1/2 revolution for correct packing
load. See Figure 9 for correct orientation of
live-loaded packing design.
F.
Insulation:
1. Insulate the valve body only. Do not insulate
the integral extension bonnet as this could
result in premature packing failure in low or
high temperature services. See Fig ure 3.
