Index: firmware/App/Controllers/BloodFlow.c
===================================================================
diff -u -rc05775820109b5e83596c58a3b4248ac6cdb1d65 -r7a754fc23436a42e61e60f66adf1cd0cc8b32ad6
--- firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision c05775820109b5e83596c58a3b4248ac6cdb1d65)
+++ firmware/App/Controllers/BloodFlow.c	(.../BloodFlow.c)	(revision 7a754fc23436a42e61e60f66adf1cd0cc8b32ad6)
@@ -281,8 +281,10 @@
     // Direction change while pump is running is not allowed
     if ( ( FALSE == isBloodPumpOn ) || ( 0 == flowRate ) || ( dir == bloodPumpDirectionSet ) )
     {
+#ifndef NO_PUMP_FLOW_LIMITS
         // Verify flow rate
-        if ( flowRate <= MAX_BLOOD_FLOW_RATE )
+        if ( flowRate <= MAX_BLOOD_FLOW_RATE )
+#endif
         {
             resetBloodFlowMovingAverage();
             targetBloodFlowRate = ( dir == MOTOR_DIR_FORWARD ? (S32)flowRate : (S32)flowRate * -1 );
@@ -321,10 +323,12 @@
             }
             result = TRUE;
         }
+#ifndef NO_PUMP_FLOW_LIMITS
         else  // Requested flow rate too high
         {
             SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_SOFTWARE_FAULT, SW_FAULT_ID_BLOOD_FLOW_SET_TOO_HIGH, flowRate )
-        }
+        }
+#endif
     }
 
     return result;
Index: firmware/App/Controllers/DialInFlow.c
===================================================================
diff -u -rc05775820109b5e83596c58a3b4248ac6cdb1d65 -r7a754fc23436a42e61e60f66adf1cd0cc8b32ad6
--- firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision c05775820109b5e83596c58a3b4248ac6cdb1d65)
+++ firmware/App/Controllers/DialInFlow.c	(.../DialInFlow.c)	(revision 7a754fc23436a42e61e60f66adf1cd0cc8b32ad6)
@@ -280,8 +280,10 @@
     // Direction change while pump is running is not allowed
     if ( ( FALSE == isDialInPumpOn ) || ( 0 == flowRate ) || ( dir == dialInPumpDirectionSet ) )
     {
+#ifndef NO_PUMP_FLOW_LIMITS
         // Verify flow rate
-        if ( flowRate <= MAX_DIAL_IN_FLOW_RATE )
+        if ( flowRate <= MAX_DIAL_IN_FLOW_RATE )
+#endif
         {
             resetDialInFlowMovingAverage();
             targetDialInFlowRate = ( dir == MOTOR_DIR_FORWARD ? (S32)flowRate : (S32)flowRate * -1 );
@@ -320,10 +322,12 @@
             }
             result = TRUE;
         }
+#ifndef NO_PUMP_FLOW_LIMITS
         else  // Requested flow rate too high
         {
             SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_SOFTWARE_FAULT, SW_FAULT_ID_DIAL_IN_FLOW_SET_TOO_HIGH, flowRate )
-        }
+        }
+#endif
     }
 
     return result;
Index: firmware/App/Controllers/DialOutFlow.c
===================================================================
diff -u -rf84cc3084357f615d08db23da2184742bacf41ed -r7a754fc23436a42e61e60f66adf1cd0cc8b32ad6
--- firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision f84cc3084357f615d08db23da2184742bacf41ed)
+++ firmware/App/Controllers/DialOutFlow.c	(.../DialOutFlow.c)	(revision 7a754fc23436a42e61e60f66adf1cd0cc8b32ad6)
@@ -240,8 +240,10 @@
     // Direction change while pump is running is not allowed
     if ( ( FALSE == isDialOutPumpOn ) || ( 0 == flowRate ) || ( dir == dialOutPumpDirectionSet ) )
     {
+#ifndef NO_PUMP_FLOW_LIMITS
         // Verify flow rate
         if ( flowRate <= MAX_DIAL_OUT_FLOW_RATE )
+#endif
         {
             F32 adjFlow = (F32)flowRate;
 
@@ -286,10 +288,12 @@
             }
             result = TRUE;
         }
+#ifndef NO_PUMP_FLOW_LIMITS
         else  // Requested flow rate too high
         {
             SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_SOFTWARE_FAULT, SW_FAULT_ID_DIAL_OUT_FLOW_SET_TOO_HIGH, flowRate )
         }
+#endif
     }
 
     return result;
Index: firmware/App/HDCommon.h
===================================================================
diff -u -r2ad92f55f437b3b293432f0aba70a5d70924f36b -r7a754fc23436a42e61e60f66adf1cd0cc8b32ad6
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 2ad92f55f437b3b293432f0aba70a5d70924f36b)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 7a754fc23436a42e61e60f66adf1cd0cc8b32ad6)
@@ -80,6 +80,7 @@
 //    #define DISABLE_VOLTAGE_MONITOR         1           // Disable voltage monitoring/alarms
     #define ALLOW_1_MIN_TREATMENT_DURATION  1           // Allow user to change treatment duration to as low as 1 minute
 //    #define DISABLE_SYRINGE_PUMP_ALARMS     1           // Disable some syringe pump alarms that are triggering intermittently
+//    #define NO_PUMP_FLOW_LIMITS             1           // Allow any commanded flow rate for peristaltic pumps
 
     #include <stdio.h>
     #include <strings.h>