INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
INLET PRESSURE
ADJUSTING SCREW
CONTROL SPRING
VENT
DIAPHRAGM
SENSING LINE
BODY
SEAT RING
SPRING CASE
VENT
VALVE SPRING
Installation
WARNING
!
Personal injury or system damage may
result if this backpressure regulator
is installed, without appropriate
overpressure protection, where service
conditions could exceed the limits given
in the Specifications section and/or
backpressure regulator nameplate. Refer
to Overpressure Protection section for
recommendations on how to prevent
service conditions from exceeding
those limits.
Additionally, physical damage to the
backpressure regulator may result in
personal injury or property damage due
to escaping of accumulated fluid. To
avoid such injury and damage, install the
backpressure regulator in a safe location.
All vents should be kept open to permit
free flow of gas to the atmosphere.
Protect openings against entrance of
rain, snow, insects or any other foreign
material that may plug the vent.
Do not install the Type CT88
backpressure regulator in hazardous
or flammable service indoors or in
an enclosure where accumulation of
vented fluid may occur. In hazardous
or flammable fluid applications, vented
fluid may accumulate and cause
personal injury, death, or property
damage due to fire, explosion and/or
chemical contamination.
Note
To avoid premature wear of internal
parts, it is recommended that the
actuator be oriented vertically as shown
in Figures 1 and 2.
General Installation Instructions
• Vertical installation with the actuator installed
directly above the main valve is recommended for
optimal performance, as shown in Figures 1 and 2.
• The use of the bleed plug is recommended for
installations of the actuator mounted above the
main valve.
Figure 2.
Type CT88 Backpressure Regulator Operational Schematic
INLET PRESSURE
OUTLET PRESSURE
ATMOSPHERIC PRESSURE
3
Type CT88
