Maintenance; Flow Direction; Installation - Fisher Baumann 84000 Instruction Manual

Instruction Manual
June 2010

Maintenance

WARNING
Avoid personal injury and property
damage from sudden release of
process pressure or bursting of parts.
Before performing any maintenance
operations:
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.
D Disconnect any operating lines
providing air pressure, electric power,
or a control signal to the actuator. Be
sure the actuator cannot suddenly
open or close 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 Depending on the actuator
construction, it will be necessary to
manage the pneumatic actuator spring
pre compression. It is essential to
refer to the relevant actuator
instructions in this manual to perform
safe removal of the actuator from the
valve.
D Use lock-out procedures to be
sure 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.
Whenever a gasket seal is disturbed
by removing or shifting gasketed
parts, install a new gasket during
reassembly. This provides a good
gasket seal because the used gasket
may not seal properly.

Flow Direction

The preferred flow direction for self draining is
shown in figures 8 and 9.

Installation

1. Before installing the valve in the pipeline,
thoroughly clean the line of all dirt, welding chips,
scale, oil or grease, and other foreign material. A
micron size filter is recommended upstream of the
valve.
2. Install valve so that the controlled fluid will flow
through the valve body in the direction selected in
figures 8 and 9. The leak detection port should be
located at the lowest point in the installed position.
3. A three valve bypass must be used to permit
removal of the control valve from the line without
shutting down the system.
4. To detect if leakage or breakage of the
diaphragm has occurred, a pressure gauge may be
installed in the 1/8 NPT port (key 14) in the bonnet,
see figures 4, 5, and 6.
WARNING
To avoid personal injury or property
damage, do not attempt to do any work
on a valve while the system is in
operation, the valve must be isolated
100% from the active system and the
isolated line voided of pressure and/or
hazardous fluids.
84000 Valve
Note
3