Flowserve Valtek Mark 10 Survivor Control Valves - Manual (Page 10)

Valtek Mark 10 Survivor Control Valves FCD VLENIM0036-05 – 07/09
10
2.11. Slowly lower the plug to the limit stop for seat centering.
2.12. Lift the plug to the up position.
2.13. Torque line bolting as per plant specification.
2.14. Connect the air supply and instrument signal. Throttling control valves are equipped with a
valve positioner. Two connections are marked: one for the air supply and the other for the
instrument signal. An air regulator is typically not required unless the air supply exceeds the
maximum allowed by the actuator User Manual. An air filter should be installed before the
positioner unless supply air is unusually clean and dry. All connections must be free of leaks.
NOTE: In some rare cases, the air supply must be limited to less than 150 psi. In this case, a sticker
found near the upper air port on the actuator cylinder will indicate this and an air regulator should be
installed to insure the supply pressure does not exceed the line pressure indicated on the sticker.