Index: leahi_dialin/dd/dialysate_delivery.py
===================================================================
diff -u -r82e46b38ae3c3602efbacad72d5dd0360694eba2 -r974a07fdcd9050230b17abd99bc8326ca558d372
--- leahi_dialin/dd/dialysate_delivery.py	(.../dialysate_delivery.py)	(revision 82e46b38ae3c3602efbacad72d5dd0360694eba2)
+++ leahi_dialin/dd/dialysate_delivery.py	(.../dialysate_delivery.py)	(revision 974a07fdcd9050230b17abd99bc8326ca558d372)
@@ -22,6 +22,7 @@
 from .modules.gen_dialysate import DDGenDialysate
 from .modules.heaters import DDHeaters
 from .modules.levels import DDLevels
+from .modules.piston_pump import DDPistonPumps
 from .modules.pressure_sensors import DDPressureSensors
 from .modules.temperature_sensors import DDTemperatureSensors
 from .modules.valves import DDValves
@@ -118,6 +119,7 @@
         self.gen_dialysate = DDGenDialysate(self.can_interface, self.logger)
         self.heaters = DDHeaters(self.can_interface, self.logger)
         self.levels = DDLevels(self.can_interface, self.logger)
+        self.piston_pumps = DDPistonPumps(self.can_interface, self.logger)
         self.pressure_sensors = DDPressureSensors(self.can_interface, self.logger)
         self.temperature_sensors = DDTemperatureSensors(self.can_interface, self.logger)
         self.valves = DDValves(self.can_interface, self.logger)