Index: leahi_dialin/common/dd_defs.py
===================================================================
diff -u -r410054cfec7aee839266233249413b08b368fbd3 -r6bde90d6f1ccc7c97119ec97687c57f9a8954ccd
--- leahi_dialin/common/dd_defs.py	(.../dd_defs.py)	(revision 410054cfec7aee839266233249413b08b368fbd3)
+++ leahi_dialin/common/dd_defs.py	(.../dd_defs.py)	(revision 6bde90d6f1ccc7c97119ec97687c57f9a8954ccd)
@@ -364,14 +364,8 @@
     SPARE5_VALV                         = 29    # Spare Valve 5
     D100_VALV                           = 30    # Valve De-scaler (D100)
     SPARE7_VALV                         = 31    # Spare Valve 7
-    M4_VALV                             = 32    # First IO valve (M4)
-    M12_VALV                            = 33    # Last IO valve IO valve (M12)
-    P11_VALV                            = 34    # First FP Valve (P11)
-    P33_VALV                            = 35    # FP Valve (P33)
-    P34_VALV                            = 36    # FP Valve (P34)
-    P37_VALV                            = 37    # FP Valve (P37)
-    P39_VALV                            = 38    # FP Valve (P39)
-    P6_VALV                             = 39    # Last FP Valve (P6)
+    FIRST_DD_VALVE = D14_VALV,                  # First DD valve
+    LAST_DD_VALVE = SPARE7_VALV,                # Last DD valve
     NUM_OF_DD_VALVES                    = 40    # Number of Valves for the DD
 
 @unique