7
17 On LG type double
acting piston actuators, the
closing air supply is
connected to point A and
the opening air supply is
connected to the top of the
gas over oil tank point B.
18 For LG type spring
close piston actuators the
opening air supply is
connected to the top of the
gas over oil tank point B.
On loss of air supply, the
actuator closes forcing the
oil into the tank.
19 The LS type piston
actuator is a new design
that reduces the size of the
gas over oil tank and allows
quicker operating times.
The opening air supply is
connected at point A and
the closing air supply is
connected to the top of the
gas over oil tank point B.
20 For LS type spring
close piston actuator the
opening air supply is at
point A.
Failure to connect the
opening air supply to this
point will keep the actuator
from opening the valve.
21 Also on LS spring close
piston actuators the pipe
plug on top of the gas over
oil tank must be replaced
with the filter breather
supplied. Failure to do this
could keep the unit from
operating and result in
injury to personnel and
damage to valve, actuator
and property.
22 Most piston actuators
except those equipped with
a hydraulic open mechanism
will be the LS model.
The Double Acting piston
with a hydraulic open model
will continue to be the LG
type.
23 Cycle the valve fully
open and fully closed to
verify correct operation.
Check the indicator rod for
full travel. Rod travel
distance can be found on
page 8.
Check the instrumentation
for correct operation.
24 The valve and actuator
package is now ready for
operation.
P R O C E S S V A L V E S
INSTALLATION, OPERATION AND MAINTENANCE
INSTALLATION OF ACTUATED VALVES (CONTINUED FROM PREVIOUS PAGE)
CT-ORB-IOM/6
05/08 ION-3M
®
ORBIT
To Next Page
Loading...
