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ES Valve
Instruction Manual
December 2008
4
maintenance, trim maintenance, and ENVIRO-SEAL
bellows seal replacement. All maintenance
operations may be performed with the valve in the
line.
WARNING
Avoid personal injury or damage to
property from sudden release of
pressure or uncontrolled process fluid.
Before starting disassembly:
D
Do not remove the actuator from
the valve while the valve is still
pressurized.
D
Always wear protective gloves,
clothing, and eyewear when
performing any maintenance
operations to avoid personal injury.
D
Disconnect any operating lines
providing air pressure, electric power,
or a control signal to the actuator. Be
sure the actuator cannot suddenly
open the valve.
D
Use bypass valves or completely
shut off the process to isolate the
valve from process pressure. Relieve
process pressure on both sides of the
valve. Drain the process media from
both sides of the valve.
D
Vent the power actuator loading
pressure and relieve any actuator
spring compression.
D
Use lock-out procedures to be
sure that the above measures stay in
effect while you work on the
equipment.
D
The valve packing box may
contain process fluids that are
pressurized,
even when the valve has
been removed from the pipeline.
Process fluids may spray out under
pressure when removing the packing
hardware or packing rings, or when
loosening the packing box pipe plug.
D
Check with your process or safety
engineer for any additional measures
that must be taken to protect against
process media.
Figure 2. Optional Lubricator and Lubricator/Isolating Valve
LUBRICATOR
LUBRICATOR/ISOLATING VALVE
10A9421-A
AJ5428-D
A0832-2/IL
CAUTION
Follow instructions carefully to avoid
damaging the product surfaces, which
could result in damage to the product.
Note
Whenever a gasket seal is disturbed
by removing or shifting gasketed
parts, a new gasket should be installed
upon reassembly. This is necessary to
ensure a good gasket seal since the
used gasket may not seal properly.
Note
If the valve has ENVIRO-SEAL or
HIGH-SEAL live-loaded packing
installed, refer to instruction manuals
ENVIRO-SEAL Packing System for
Sliding-Stem Valves, D101642X012, or
HIGH-SEAL Live-Loaded Packing
System, D101453X012, for packing
instructions. Figure 9 shows a typical
HIGH-SEAL Packing system. Figures
10, 11, and 12 show typical
ENVIRO-SEAL packing systems.
If the valve has an ENVIRO-SEAL
bellows seal bonnet installed, refer to
this manual. See the ENVIRO-SEAL
Bellows Seal and Bonnet section for
information on the bellows seal
bonnet.