Index: dialin/common/hd_defs.py
===================================================================
diff -u -r596ab599d427184d12a389db4e0f426e1a21919f -rce23b8ed8f64e4cbbf6bc115f645a7f6d043b4d5
--- dialin/common/hd_defs.py	(.../hd_defs.py)	(revision 596ab599d427184d12a389db4e0f426e1a21919f)
+++ dialin/common/hd_defs.py	(.../hd_defs.py)	(revision ce23b8ed8f64e4cbbf6bc115f645a7f6d043b4d5)
@@ -347,7 +347,9 @@
     HD_EVENT_RSRVR_UF_VOLUME_AND_TIME                       = 21    # HD ultrafiltration volume and time for a reservoir use
     HD_EVENT_RSRVR_UF_RATE                                  = 22    # HD ultrafiltration measured and expected rates
     HD_EVENT_OPERATION_STATUS                               = 23    # HD operation status event.
-    NUM_OF_EVENT_IDS                                        = 24    # Total number of HD events
+    HD_EVENT_AIR_TRAP_FILL                                  = 24    # HD initiated an air trap fill (opened VBT briefly).
+    HD_EVENT_AIR_PUMP_ON_OFF                                = 25    # HD turned air pump on or off.
+    NUM_OF_EVENT_IDS                                        = 26    # Total number of HD events
 
 @unique
 class HDEventDataType(DialinEnum):