Type MR108
6
Installation
!
WARNING
Personal injury or system damage
may result if this regulator is installed,
without appropriate overpressure
protection, where service conditions
could exceed the limits given in the
nameplate. Refer to Overpressure
Protection section for recommendations
on how to prevent service conditions
from exceeding those limits.
Additionally, physical damage to the
regulator may result in personal injury
or property damage due to escaping of
accumulated gas. To avoid such injury
and damage, install the regulator in a
safe location.
All vents should be kept open to permit
Protect openings against entrance of
rain, snow, insects or any other foreign
material that may plug the vent or vent
line. On outdoor installations, point the
spring case vent downward to allow
condensate to drain.
Under enclosed conditions or indoors,
escaping gas may accumulate and be
an explosion hazard. In these cases,
the vent should be piped away from the
regulator to the outdoors.
Note
To avoid premature wear of internal
parts, it is recommended that the
actuator be oriented up or down in liquid
General Installation Instructions
!
WARNING
bleed valve may result in regulator
damage, personal injury and property
damage. To avoid such injury and
damage, make certain the bleed valve (if
used) is properly closed after venting air.
Always open bleed valves slowly. These
weepage will occur when the valves
are opened. Operating personnel must
protect themselves from exposure to
Note
A linear cage is recommended for
is a concern but it will limit the overall
capacity of the regulator.
Vertical installation with the actuator installed directly
above or below the main valve is recommended but for
optimal performance, the actuator should be installed
below the main valve. The use of a bleed valve is
recommended for liquid installations that require the
high pressure actuator to be mounted above the main
valve. The unit will operate in horizontal installations
with the actuator on the side, however, this could result
in premature wear of parts. Make sure that ow will
be in the same direction as that indicated by the body
arrow. Orientation of the two vents should always be
down. Vents may be rotated after regulator installation
so that the vent screens are down.
Before installing the regulator:
• Check for damage which might have occurred
during shipment.
• Check for and remove any dirt or foreign material
which may have accumulated in the regulator body.
• Blow out any debris, dirt or copper sulfate in the
tubing and the pipeline.
• Apply pipe compound to the external threads of
the pipe before installing the regulator.
• Make sure gas ow through the regulator is in the
same direction as the arrow on the body. “Inlet”
and “Outlet” connections are clearly marked.
Note
For proper regulator control and
