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Instruction Manual

February 2009

GX Control Valve and Actuator System - 14722 GX Valve and Actuator

springs are still under compression.The upper casing could suddenlycome loose and jump, due to the compressed energy of the springs. Ifthe upper casing is stuck to thediaphragm and lower casing when you begin loosening the casing capscrews, pry the casings apart with aprying tool. Always ensure that the springs are dispersing energy and theupper casing is moving against thelong bolts during disassembly. 6. Remove the short actuator casing cap screwsand hex nuts (keys 17 and 18) first. Once these have been removed from the actuator assembly,carefully remove the long actuator cap screws andhex nuts (keys 16 and 18), alternating between them to gradually release the spring energy(compression).7. Remove the upper diaphragm casing (key 9) andthe actuator springs (key 12 and/or 82).8. Lift off the actuator stem/diaphragm assembly(includes keys 22, 11, 10, 14, 13, and 15) and remove the cap screw (key 14), actuator spacer (key 13), actuator rod (key 22), and washer (key 15).9. Replace the diaphragm (key 10), actuator rodbushing (key 19), and actuator rod seal (key 20), asneeded. 2. Remove the short actuator casing cap screwsand hex nuts (keys 17 and 18) first. Once thesehave been removed from the actuator assembly, carefully remove the long actuator cap screws andhex nuts (keys 16 and 18), alternating between themto gradually release the spring energy (compression).3. Remove the upper diaphragm casing (key 9). 4. Lift off the actuator stem/diaphragm assembly(includes keys 22, 11, 10, 14, 13, and 15) andremove the cap screw (key 14), actuator spacer (key 13), actuator rod (key 22), and washer (key 15).5. Remove the actuator springs (key 12 and/or 82). 6. Replace the diaphragm (key 10), actuator rodbushing (key 19), and actuator rod seal (key 20), as needed.

Actuator Disassembly (For Air-to-CloseConstructions - see figure 20 or 21)

1. Remove the stem connector nut half (key 23),stem connector bolt half (key 24), and travelindicator (key 26).

WARNING

To avoid personal injury or propertydamage due to actuator springs (key 12) being under compression, removethe long cap screws (key 16) last.The upper actuator casing may remainfixed to the diaphragm and lowercasing during disassembly, even if the casing cap screws have beenloosened. If this happens, the actuatorsprings are still under compression. The upper casing could suddenlycome loose and jump, due to thecompressed energy of the springs. If the upper casing is stuck to thediaphragm and lower casing when youbegin loosening the casing cap screws, pry the casings apart with aprying tool. Always ensure that thesprings are dispersing energy and the upper casing is moving against thelong bolts during disassembly.
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