diff --git a/PythonModels/systems/test_mql_closure.py b/PythonModels/systems/test_mql_closure.py
index d2fa0dc..3109bb4 100644
--- a/PythonModels/systems/test_mql_closure.py
+++ b/PythonModels/systems/test_mql_closure.py
@@ -280,6 +280,14 @@ class TestMqlPn3P4NodeChamberSegmentComponents:
     spec: TestMqlPneumaticChamberSegmentSpec
 
 
+@dataclass(frozen=True)
+class TestMqlFixedChamberSegmentFlows:
+    inlet_node_to_line_flow: float
+    inlet_line_to_chamber_flow: float
+    outlet_node_to_line_flow: float
+    outlet_line_to_chamber_flow: float
+
+
 @dataclass(frozen=True)
 class TestMqlPn3NodeBalancePort:
     flow_kg_s: float
@@ -716,24 +724,21 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         resistance_boundary = self.resistance_boundary.properties(
             self.components.node_resistance.gas
         )
-        inlet_node_to_line_flow = self.components.inlet_line.resistance_mass_flow(
-            port_1_pressure_pa=p4_port3_remote_orifice_line_port_1.p,
-            port_1_temperature_k=p4_port3_remote_orifice_line_port_1.T,
-        )
-        outlet_node_to_line_flow = self.components.outlet_line.resistance_mass_flow(
-            port_1_pressure_pa=node_line_port_1.p,
-            port_1_temperature_k=node_line_port_1.T,
-        )
-        inlet_line_to_chamber_flow = self._line_to_chamber_flow(
-            line=inlet_line,
-            chamber=chamber,
-            orifice=self.components.inlet_orifice,
-        )
-        outlet_line_to_chamber_flow = self._line_to_chamber_flow(
-            line=outlet_line,
-            chamber=chamber,
-            orifice=self.components.outlet_orifice,
+        chamber_segment_flows = self._fixed_chamber_segment_flows(
+            chamber_properties=chamber,
+            inlet_line=self.components.inlet_line,
+            inlet_line_properties=inlet_line,
+            inlet_node_properties=p4_port3_remote_orifice_line_port_1,
+            inlet_orifice=self.components.inlet_orifice,
+            outlet_line=self.components.outlet_line,
+            outlet_line_properties=outlet_line,
+            outlet_node_properties=node_line_port_1,
+            outlet_orifice=self.components.outlet_orifice,
         )
+        inlet_node_to_line_flow = chamber_segment_flows.inlet_node_to_line_flow
+        inlet_line_to_chamber_flow = chamber_segment_flows.inlet_line_to_chamber_flow
+        outlet_node_to_line_flow = chamber_segment_flows.outlet_node_to_line_flow
+        outlet_line_to_chamber_flow = chamber_segment_flows.outlet_line_to_chamber_flow
         node_to_resistance_flow = self.components.node_resistance.mass_flow(
             port_1_pressure_pa=node_line_port_1.p,
             port_1_temperature_k=node_line_port_1.T,
@@ -846,12 +851,43 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
                 port_1_temperature_k=p4_bridge_primary_chamber.T,
             )
         )
-        p4_port1_next_orifice_resistance_chamber_inlet_node_to_line_flow = (
-            self.components.p4_port1_next_orifice_resistance_chamber_inlet_line.resistance_mass_flow(
-                port_1_pressure_pa=p4_port1_remote_orifice_line_port_1.p,
-                port_1_temperature_k=p4_port1_remote_orifice_line_port_1.T,
+        p4_port1_next_orifice_resistance_chamber_flows = (
+            self._fixed_chamber_segment_flows(
+                chamber_properties=p4_port1_next_orifice_resistance_chamber,
+                inlet_line=(
+                    self.components.p4_port1_next_orifice_resistance_chamber_inlet_line
+                ),
+                inlet_line_properties=(
+                    p4_port1_next_orifice_resistance_chamber_inlet_line
+                ),
+                inlet_node_properties=p4_port1_remote_orifice_line_port_1,
+                inlet_orifice=(
+                    self.components.p4_port1_next_orifice_resistance_chamber_inlet_orifice
+                ),
+                outlet_line=(
+                    self.components.p4_port1_next_orifice_resistance_chamber_outlet_line
+                ),
+                outlet_line_properties=(
+                    p4_port1_next_orifice_resistance_chamber_outlet_line
+                ),
+                outlet_node_properties=p4_port1_next_orifice_resistance_line_port_1,
+                outlet_orifice=(
+                    self.components.p4_port1_next_orifice_resistance_chamber_outlet_orifice
+                ),
             )
         )
+        p4_port1_next_orifice_resistance_chamber_inlet_node_to_line_flow = (
+            p4_port1_next_orifice_resistance_chamber_flows.inlet_node_to_line_flow
+        )
+        p4_port1_next_orifice_resistance_chamber_inlet_line_to_chamber_flow = (
+            p4_port1_next_orifice_resistance_chamber_flows.inlet_line_to_chamber_flow
+        )
+        p4_port1_next_orifice_resistance_chamber_outlet_node_to_line_flow = (
+            p4_port1_next_orifice_resistance_chamber_flows.outlet_node_to_line_flow
+        )
+        p4_port1_next_orifice_resistance_chamber_outlet_line_to_chamber_flow = (
+            p4_port1_next_orifice_resistance_chamber_flows.outlet_line_to_chamber_flow
+        )
         p4_port1_remote_orifice_node_balance = self._pn3_node_balance(
             node=self.components.p4_port1_remote_orifice_node,
             primary_properties=p4_port1_remote_orifice_line_port_1,
@@ -947,27 +983,28 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
                 port_temperature_k=p4_port3_next_primary_line.T,
             )
         )
-        p4_port3_next_chamber_inlet_node_to_line_flow = (
-            self.components.p4_port3_next_chamber_inlet_line.resistance_mass_flow(
-                port_1_pressure_pa=p4_port3_next_orifice_line_port_1.p,
-                port_1_temperature_k=p4_port3_next_orifice_line_port_1.T,
-            )
+        p4_port3_next_chamber_flows = self._fixed_chamber_segment_flows(
+            chamber_properties=p4_port3_next_chamber,
+            inlet_line=self.components.p4_port3_next_chamber_inlet_line,
+            inlet_line_properties=p4_port3_next_chamber_inlet_line,
+            inlet_node_properties=p4_port3_next_orifice_line_port_1,
+            inlet_orifice=self.components.p4_port3_next_chamber_inlet_orifice,
+            outlet_line=self.components.p4_port3_next_chamber_outlet_line,
+            outlet_line_properties=p4_port3_next_chamber_outlet_line,
+            outlet_node_properties=p4_port3_remote_resistance_node_line_port_1,
+            outlet_orifice=self.components.p4_port3_next_chamber_outlet_orifice,
         )
-        p4_port3_next_chamber_inlet_line_to_chamber_flow = self._line_to_chamber_flow(
-            line=p4_port3_next_chamber_inlet_line,
-            chamber=p4_port3_next_chamber,
-            orifice=self.components.p4_port3_next_chamber_inlet_orifice,
+        p4_port3_next_chamber_inlet_node_to_line_flow = (
+            p4_port3_next_chamber_flows.inlet_node_to_line_flow
+        )
+        p4_port3_next_chamber_inlet_line_to_chamber_flow = (
+            p4_port3_next_chamber_flows.inlet_line_to_chamber_flow
         )
         p4_port3_next_chamber_outlet_node_to_line_flow = (
-            self.components.p4_port3_next_chamber_outlet_line.resistance_mass_flow(
-                port_1_pressure_pa=p4_port3_remote_resistance_node_line_port_1.p,
-                port_1_temperature_k=p4_port3_remote_resistance_node_line_port_1.T,
-            )
+            p4_port3_next_chamber_flows.outlet_node_to_line_flow
         )
-        p4_port3_next_chamber_outlet_line_to_chamber_flow = self._line_to_chamber_flow(
-            line=p4_port3_next_chamber_outlet_line,
-            chamber=p4_port3_next_chamber,
-            orifice=self.components.p4_port3_next_chamber_outlet_orifice,
+        p4_port3_next_chamber_outlet_line_to_chamber_flow = (
+            p4_port3_next_chamber_flows.outlet_line_to_chamber_flow
         )
         p4_port3_next_resistance_node_to_next_flow = (
             self.components.p4_port3_next_orifice_resistance.mass_flow(
@@ -1007,31 +1044,36 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
         p4_port3_next_orifice_output_to_p4_flow = (
             p4_port3_next_orifice_to_output_line_flow
         )
-        p4_port3_next_resistance_chamber_inlet_node_to_line_flow = (
-            self.components.p4_port3_next_resistance_chamber_inlet_line.resistance_mass_flow(
-                port_1_pressure_pa=p4_port1_next_orifice_line_port_1.p,
-                port_1_temperature_k=p4_port1_next_orifice_line_port_1.T,
+        p4_port3_next_resistance_chamber_flows = (
+            self._fixed_chamber_segment_flows(
+                chamber_properties=p4_port3_next_resistance_chamber,
+                inlet_line=self.components.p4_port3_next_resistance_chamber_inlet_line,
+                inlet_line_properties=p4_port3_next_resistance_chamber_inlet_line,
+                inlet_node_properties=p4_port1_next_orifice_line_port_1,
+                inlet_orifice=(
+                    self.components.p4_port3_next_resistance_chamber_inlet_orifice
+                ),
+                outlet_line=(
+                    self.components.p4_port3_next_resistance_chamber_outlet_line
+                ),
+                outlet_line_properties=p4_port3_next_resistance_chamber_outlet_line,
+                outlet_node_properties=p4_port3_next_resistance_node_line_port_1,
+                outlet_orifice=(
+                    self.components.p4_port3_next_resistance_chamber_outlet_orifice
+                ),
             )
         )
+        p4_port3_next_resistance_chamber_inlet_node_to_line_flow = (
+            p4_port3_next_resistance_chamber_flows.inlet_node_to_line_flow
+        )
         p4_port3_next_resistance_chamber_inlet_line_to_chamber_flow = (
-            self._line_to_chamber_flow(
-                line=p4_port3_next_resistance_chamber_inlet_line,
-                chamber=p4_port3_next_resistance_chamber,
-                orifice=self.components.p4_port3_next_resistance_chamber_inlet_orifice,
-            )
+            p4_port3_next_resistance_chamber_flows.inlet_line_to_chamber_flow
         )
         p4_port3_next_resistance_chamber_outlet_node_to_line_flow = (
-            self.components.p4_port3_next_resistance_chamber_outlet_line.resistance_mass_flow(
-                port_1_pressure_pa=p4_port3_next_resistance_node_line_port_1.p,
-                port_1_temperature_k=p4_port3_next_resistance_node_line_port_1.T,
-            )
+            p4_port3_next_resistance_chamber_flows.outlet_node_to_line_flow
         )
         p4_port3_next_resistance_chamber_outlet_line_to_chamber_flow = (
-            self._line_to_chamber_flow(
-                line=p4_port3_next_resistance_chamber_outlet_line,
-                chamber=p4_port3_next_resistance_chamber,
-                orifice=self.components.p4_port3_next_resistance_chamber_outlet_orifice,
-            )
+            p4_port3_next_resistance_chamber_flows.outlet_line_to_chamber_flow
         )
         p4_port1_next_orifice_resistance_node_to_next_flow = (
             self.components.p4_port1_next_orifice_resistance.mass_flow(
@@ -1041,26 +1083,6 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
                 port_2_temperature_k=p4_port1_next_orifice_line_port_1.T,
             )
         )
-        p4_port1_next_orifice_resistance_chamber_inlet_line_to_chamber_flow = (
-            self._line_to_chamber_flow(
-                line=p4_port1_next_orifice_resistance_chamber_inlet_line,
-                chamber=p4_port1_next_orifice_resistance_chamber,
-                orifice=self.components.p4_port1_next_orifice_resistance_chamber_inlet_orifice,
-            )
-        )
-        p4_port1_next_orifice_resistance_chamber_outlet_node_to_line_flow = (
-            self.components.p4_port1_next_orifice_resistance_chamber_outlet_line.resistance_mass_flow(
-                port_1_pressure_pa=p4_port1_next_orifice_resistance_line_port_1.p,
-                port_1_temperature_k=p4_port1_next_orifice_resistance_line_port_1.T,
-            )
-        )
-        p4_port1_next_orifice_resistance_chamber_outlet_line_to_chamber_flow = (
-            self._line_to_chamber_flow(
-                line=p4_port1_next_orifice_resistance_chamber_outlet_line,
-                chamber=p4_port1_next_orifice_resistance_chamber,
-                orifice=self.components.p4_port1_next_orifice_resistance_chamber_outlet_orifice,
-            )
-        )
         p4_port1_next_orifice_node_balance = self._pn3_node_balance(
             node=self.components.p4_port1_next_orifice_node,
             primary_properties=p4_port1_next_orifice_line_port_1,
@@ -1752,6 +1774,40 @@ class TestMqlPn3P4NodeChamberSegmentClosure:
             connected_h=connected_h,
         )
 
+    def _fixed_chamber_segment_flows(
+        self,
+        *,
+        chamber_properties: ThermodynamicProperties,
+        inlet_line: AmesimPnl0001Pipe,
+        inlet_line_properties: ThermodynamicProperties,
+        inlet_node_properties: ThermodynamicProperties,
+        inlet_orifice: AmesimPneumaticOrifice,
+        outlet_line: AmesimPnl0001Pipe,
+        outlet_line_properties: ThermodynamicProperties,
+        outlet_node_properties: ThermodynamicProperties,
+        outlet_orifice: AmesimPneumaticOrifice,
+    ) -> TestMqlFixedChamberSegmentFlows:
+        return TestMqlFixedChamberSegmentFlows(
+            inlet_node_to_line_flow=inlet_line.resistance_mass_flow(
+                port_1_pressure_pa=inlet_node_properties.p,
+                port_1_temperature_k=inlet_node_properties.T,
+            ),
+            inlet_line_to_chamber_flow=self._line_to_chamber_flow(
+                line=inlet_line_properties,
+                chamber=chamber_properties,
+                orifice=inlet_orifice,
+            ),
+            outlet_node_to_line_flow=outlet_line.resistance_mass_flow(
+                port_1_pressure_pa=outlet_node_properties.p,
+                port_1_temperature_k=outlet_node_properties.T,
+            ),
+            outlet_line_to_chamber_flow=self._line_to_chamber_flow(
+                line=outlet_line_properties,
+                chamber=chamber_properties,
+                orifice=outlet_orifice,
+            ),
+        )
+
     def _pn3_node_balance(
         self,
         *,