Index: leahi_dialin/common/dd_defs.py
===================================================================
diff -u -r8e3ce4e082f70e12b48d796c518994662f7668b3 -rb58eb26e4481c8c2ae3a7978d3564eaaee037ecd
--- leahi_dialin/common/dd_defs.py	(.../dd_defs.py)	(revision 8e3ce4e082f70e12b48d796c518994662f7668b3)
+++ leahi_dialin/common/dd_defs.py	(.../dd_defs.py)	(revision b58eb26e4481c8c2ae3a7978d3564eaaee037ecd)
@@ -312,7 +312,7 @@
     D3_VALV                             = 12    # Valve Hydraulics Inlet (D3)
     D80_VALV                            = 13    # Valve Dry Bicarb (D80)
     D81_VALV                            = 14    # Valve De-scaler (D81)
-    RSRVD_SPACE1                        = 15    # This space has been reserved
+    D85_VALV                            = 15    # Valve DryBicart vent (D85)
     D23_VALV                            = 16    # Balancing chamber Valve 1 (D23)
     D19_VALV                            = 17    # Balancing chamber Valve 2 (D19)
     D25_VALV                            = 18    # Balancing chamber Valve 3 (D25)
Index: leahi_dialin/dd/modules/valves.py
===================================================================
diff -u -rfa63b92d3d3a3f2870833583bff12729e180e2d1 -rb58eb26e4481c8c2ae3a7978d3564eaaee037ecd
--- leahi_dialin/dd/modules/valves.py	(.../valves.py)	(revision fa63b92d3d3a3f2870833583bff12729e180e2d1)
+++ leahi_dialin/dd/modules/valves.py	(.../valves.py)	(revision b58eb26e4481c8c2ae3a7978d3564eaaee037ecd)
@@ -80,7 +80,7 @@
         self.d3_valv = {"id": DDValveNames.D3_VALV.value, "state": DEENERGIZED}
         self.d80_valv = {"id": DDValveNames.D80_VALV.value, "state": DEENERGIZED}
         self.d81_valv = {"id": DDValveNames.D81_VALV.value, "state": DEENERGIZED}
-        self.rsvrd1 = {"id": DDValveNames.RSRVD_SPACE1.value, "state": DEENERGIZED}
+        self.d85_valv = {"id": DDValveNames.D85_VALV.value, "state": DEENERGIZED}
 
         self.d23_valv = {"id": DDValveNames.D23_VALV.value, "state": DEENERGIZED}
         self.d19_valv = {"id": DDValveNames.D19_VALV.value, "state": DEENERGIZED}
@@ -129,7 +129,7 @@
             self.d3_valv.get("state", None),
             self.d80_valv.get("state", None),
             self.d81_valv.get("state", None),
-            self.rsvrd1.get("state", None),
+            self.d85_valv.get("state", None),
 
             self.d23_valv.get("state", None),
             self.d19_valv.get("state", None),
@@ -197,7 +197,7 @@
         "d3_valv",
         "d80_valv",
         "d81_valv",
-        "rsvrd1",
+        "d85_valv",
         "d23_valv",
         "d19_valv",
         "d25_valv",
@@ -246,7 +246,7 @@
         self.d3_valv["state"] = self._binary_to_valve_state(vst[0] & 4096)
         self.d80_valv["state"] = self._binary_to_valve_state(vst[0] & 8192)
         self.d81_valv["state"] = self._binary_to_valve_state(vst[0] & 16384)
-        self.rsvrd1["state"] = self._binary_to_valve_state(vst[0] & 32768)
+        self.d85_valv["state"] = self._binary_to_valve_state(vst[0] & 32768)
 
         bcv = struct.unpack('B', bytearray(message['message'][self.START_POS_BCV_VALVES_STATES:self.END_POS_BCV_VALVES_STATES]))
         self.d23_valv["state"] = self._binary_to_valve_state(bcv[0] & 1)