Index: dialin/dg/valves.py
===================================================================
diff -u -r7142f4d4e9c32cbc2aba71a5df56abed608eed4d -r8324424cdf429624a338837613b480672d872c25
--- dialin/dg/valves.py	(.../valves.py)	(revision 7142f4d4e9c32cbc2aba71a5df56abed608eed4d)
+++ dialin/dg/valves.py	(.../valves.py)	(revision 8324424cdf429624a338837613b480672d872c25)
@@ -20,6 +20,10 @@
 from .constants import NO_RESET
 from ..protocols.CAN import (DenaliMessage, DenaliChannels)
 
+# Valve states
+ENERGIZED = True
+DEENERGIZED = False
+
 class DGValves:
     """
     \class DGValves
@@ -66,19 +70,19 @@
             msg_id = self.MSG_ID_DG_VALVES_STATES
             self.can_interface.register_receiving_publication_function(channel_id, msg_id, self.handler_valves_sync)
 
-        self.valve_state_VRF = 0
-        self.valve_state_VRI = 0
-        self.valve_state_VRD = 0
-        self.valve_state_VRO = 0
-        self.valve_state_VPO = 0
-        self.valve_state_VBF = 0
-        self.valve_state_VRC = 0
-        self.valve_state_VDR = 0
-        self.valve_state_VPI = 0
-        self.valve_state_VSP = 0
-        self.valve_state_VR1 = 0
-        self.valve_state_VR2 = 0
-        self.valve_state_VPD = 0
+        self.valve_state_VRF = DEENERGIZED
+        self.valve_state_VRI = DEENERGIZED
+        self.valve_state_VRD = DEENERGIZED
+        self.valve_state_VRO = DEENERGIZED
+        self.valve_state_VPO = DEENERGIZED
+        self.valve_state_VBF = DEENERGIZED
+        self.valve_state_VRC = DEENERGIZED
+        self.valve_state_VDR = DEENERGIZED
+        self.valve_state_VPI = DEENERGIZED
+        self.valve_state_VSP = DEENERGIZED
+        self.valve_state_VR1 = DEENERGIZED
+        self.valve_state_VR2 = DEENERGIZED
+        self.valve_state_VPD = DEENERGIZED
 
     def handler_valves_sync(self, message):
         """