Emerson Fisher EZL Instruction Manual page 6

Type EZL
August 2015
Type EZL Working Monitor
161EB SERIES PILOT
P590 SERIES
PILOT SUPPLY
FILTER
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
E0946_08/2015
LOADING PRESSURE
INLET PRESSURE
INTERMEDIATE PRESSURE
OUTLET PRESSURE
LOADING PRESSURE
ATMOSPHERIC PRESSURE
INTERMEDIATE PRESSURE
PILOT SUPPLY PRESSURE
elaborate venting systems. This regulator also can be
installed in pits subject to flooding by venting the pilot
spring case above the expected flood level so that the
pilot diaphragm is exposed to atmospheric pressure.
1. Only personnel qualified through training and
experience should install, operate and maintain a
regulator. Before installation, make sure that there
is no damage to or debris in the regulator. Also,
make sure that all tubing and piping are clean
and unobstructed.
2. Install the regulator so that the flow arrow on the
main valve matches the flow direction of process
fluid through the regulator. The EZL Series may be
installed in any position, but it is normally installed
in a horizontal pipeline with the pilot or pilots above
the body.
3. Apply pipe compound to the external pipeline
threads before installing a regulator with threaded
end connections. Use gaskets between pipeline
and regulator flanges when installing a regulator
6
TYPE 6352 PILOT
TYPE EZL MAIN VALVE
INLET PRESSURE
OUTLET PRESSURE
LOADING PRESSURE
ATMOSPHERIC PRESSURE
INTERMEDIATE PRESSURE
PILOT SUPPLY PRESSURE
Figure 5. Working Monitoring System Operational Schematic
P590 SERIES PILOT
SUPPLY FILTER
TYPE 6352 PILOT
TYPE EZL MAIN VALVE
with flanged end connections. When installing
buttweld end connections, remove trim before
welding and make sure to use approved welding
practices. Use approved piping procedures when
installing the regulator.
WARNING
!
A regulator may vent some gas to
the atmosphere. In hazardous or
flammable gas service, vented gas
may accumulate, causing personal
injury, death or property damage
due to bursting of pressure-retaining
parts. Vent a regulator in hazardous
gas service to a remote, safe location
away from air intakes or any hazardous
location. The vent line or stack opening
must be protected against condensation
or clogging.
Type EZL