Operation - Siemens Flowrite 599 Series Technical Instructions

Technical Instructions
Document Number 155-184P25
May 2, 2016

Operation

Page 10
Flowrite 599 Series Two-Way Valves, 1/2 to 2-Inch, Bronze Body, ANSI 250
ELECTRONIC
Figure 5 shows the normally open valve in
the open position and the normally closed
valve in the closed or zero flow position.
In the event of power failure, a spring
return actuator returns the valve to its
normal position. Non-spring return
actuators will hold the last commanded
position. See the Technical Instructions of
the various actuators for additional
information.
Figure 4. Close-off Pressures.
PNEUMATIC
Figure 5.
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