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Plugged lines, columns, and valves
If the lines, columns, or valves are plugged, check the gas flow at valve ports. For a
reference, use the flow diagram in the drawing package, and remember these points
about flow diagrams:
• Port-to-port flow paths are indicated by solid or dashed lines.
• A dashed line indicates flow direction when the valve is ON, that is, energized.
• A solid line indicates flow direction when the valve is OFF, i.e., not energized.
4.4.6 Valves
Only minimal repair and maintenance is required by the customer (e.g., replacing the
diaphragms).
Required tools for valve maintenance
The tools required for performing repair and general maintenance on the XA valve
assemblies are:
• Torque wrench, scaled in foot-pounds
• 1/2” socket for 10-port valves
• 7/16” socket for 6-port valves
• 1/4” open-ended wrench
• 5/16” open-ended wrench
• 5/32” allen wrench
Valve replacement parts
Replacement parts required for each XA valves consist of the following parts:
• Diaphragm Kit 6-port XA Valve (P/N 2-4-0710-248)
• Diaphragm Kit 10-port XA Valve (P/N 2-4-0710-171)
Operation and maintenance
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