Index: leahi_dialin/ui/dd_messaging.py
===================================================================
diff -u -rfdaa21a553063d166174706bff3a6b2e1cb9a9b0 -ra5182b00a866429c2c27e6fba26e17978836805e
--- leahi_dialin/ui/dd_messaging.py	(.../dd_messaging.py)	(revision fdaa21a553063d166174706bff3a6b2e1cb9a9b0)
+++ leahi_dialin/ui/dd_messaging.py	(.../dd_messaging.py)	(revision a5182b00a866429c2c27e6fba26e17978836805e)
@@ -528,4 +528,115 @@
                                             message_id=msg_ids.MsgIds.MSG_ID_DD_BLOOD_LEAK_DATA.value,
                                             payload=payload)
 
+        self.can_interface.send(message, 0)
+
+    def dd_valves(self, D14_VALV        : bool,
+                        D52_VALV        : bool,
+                        D8_VALV         : bool,
+                        D54_VALV        : bool,
+                        D53_VALV        : bool,
+                        D34_VALV        : bool,
+                        D64_VALV        : bool,
+                        D31_VALV        : bool,
+                        D65_VALV        : bool,
+                        D35_VALV        : bool,
+                        D40_VALV        : bool,
+                        D47_VALV        : bool,
+                        D3_VALV         : bool,
+                        M4_VALV         : bool,
+                        RSRVD_SPACE1    : bool,
+                        RSRVD_SPACE2    : bool,
+                        D23_VALV        : bool,
+                        D19_VALV        : bool,
+                        D25_VALV        : bool,
+                        D26_VALV        : bool,
+                        D24_VALV        : bool,
+                        D20_VALV        : bool,
+                        D21_VALV        : bool,
+                        D22_VALV        : bool,
+                        D69_VALV        : bool,
+                        D71_VALV        : bool,
+                        D70_VALV        : bool,
+                        D72_VALV        : bool,
+                        valvesensedState: list):
+        """
+        Broadcasts the current DD Valve data (Msg ID: 0x1B, 27)
+        Args:
+            D14_VALV                 (bool       ): Valve Hydraulics Outlet (D14)
+            D52_VALV                 (bool       ): Valve Thermal Disinfect (D52)
+            D8_VALV                  (bool       ): Valve Hydraulics Bypass (D8)
+            D54_VALV                 (bool       ): Valve Rinse Port (D54)
+            D53_VALV                 (bool       ): Valve Drain (D53)
+            D34_VALV                 (bool       ): Valve Dialyzer Bypass (D34)
+            D64_VALV                 (bool       ): Valve Purge 1 (D64)
+            D31_VALV                 (bool       ): Valve Pressure Test (D31)
+            D65_VALV                 (bool       ): Valve DryBcarb Inlet (D65)
+            D35_VALV                 (bool       ): Valve Dialyzer Inlet (D35)
+            D40_VALV                 (bool       ): Valve Dialyzer Outlet (D40)
+            D47_VALV                 (bool       ): Valve Dialysate Out Purge 2 (D47)
+            D3_VALV                  (bool       ): Valve Hydraulics Inlet (D3)
+            M4_VALV                  (bool       ): Valve Water Inlet (M4)
+            RSRVD_SPACE1             (bool       ): This space has been reserved
+            RSRVD_SPACE2             (bool       ): This space has been reserved
+            D23_VALV                 (bool       ): Balancing chamber Valve 1 (D23)
+            D19_VALV                 (bool       ): Balancing chamber Valve 2 (D19)
+            D25_VALV                 (bool       ): Balancing chamber Valve 3 (D25)
+            D26_VALV                 (bool       ): Balancing chamber Valve 7 (D26)
+            D24_VALV                 (bool       ): Balancing chamber Valve 5 (D24)
+            D20_VALV                 (bool       ): Balancing chamber Valve 6 (D20)
+            D21_VALV                 (bool       ): Balancing chamber Valve 4 (D21)
+            D22_VALV                 (bool       ): Balancing chamber Valve 8 (D22)
+            D69_VALV                 (bool       ): Ultrafiltration Valve 1 Inlet (D69)
+            D71_VALV                 (bool       ): Ultrafiltration Valve 2 Inlet (D71)
+            D70_VALV                 (bool       ): Ultrafiltration Valve 1 Outlet (D70)
+            D72_VALV                 (bool       ): Ultrafiltration Valve 2 Outlet (D72)
+            valvesensedState[28]     (list[int]  ): Sense state of valves
+        """
+        hydraulic_valves =  (D14_VALV     << 0 )|\
+                            (D52_VALV     << 1 )|\
+                            (D8_VALV      << 2 )|\
+                            (D54_VALV     << 3 )|\
+                            (D53_VALV     << 4 )|\
+                            (D34_VALV     << 5 )|\
+                            (D64_VALV     << 6 )|\
+                            (D31_VALV     << 7 )|\
+                            (D65_VALV     << 8 )|\
+                            (D35_VALV     << 9 )|\
+                            (D40_VALV     << 10)|\
+                            (D47_VALV     << 11)|\
+                            (D3_VALV      << 12)|\
+                            (M4_VALV      << 13)|\
+                            (RSRVD_SPACE1 << 14)|\
+                            (RSRVD_SPACE2 << 15)
+        
+        balancing_chamber_valves =  (D23_VALV     << 0 ) | \
+                                    (D19_VALV     << 1 )|\
+                                    (D25_VALV     << 2 )|\
+                                    (D26_VALV     << 3 )|\
+                                    (D24_VALV     << 4 )|\
+                                    (D20_VALV     << 5 )|\
+                                    (D21_VALV     << 6 )|\
+                                    (D22_VALV     << 7 )
+        
+        # final 4 bits are reserved and left as 0
+        ultrafiltration_valves =    (D69_VALV     << 0 )|\
+                                    (D71_VALV     << 1 )|\
+                                    (D70_VALV     << 2 )|\
+                                    (D72_VALV     << 3 )|\
+                                    (0            << 4 )|\
+                                    (0            << 5 )|\
+                                    (0            << 6 )|\
+                                    (0            << 7 )
+        
+        payload  =  conversions.unsigned_short_to_bytearray(hydraulic_valves                )
+        payload +=  conversions.unsigned_byte_to_bytearray (balancing_chamber_valves        )
+        payload +=  conversions.unsigned_byte_to_bytearray (ultrafiltration_valves          )
+        for i in range(len(valvesensedState)):
+            payload +=  conversions.unsigned_byte_to_bytearray(valvesensedState[i])
+
+        message = CAN.DenaliMessage.build_message(
+                                            channel_id=CAN.DenaliChannels.dd_sync_broadcast_ch_id,
+                                            message_id=msg_ids.MsgIds.MSG_ID_DD_VALVES_STATES_DATA.value,
+                                            payload=payload)
+
         self.can_interface.send(message, 0)
\ No newline at end of file