diff --git a/PamhagenSysCtrl/Helpers/Pipeline/ControlledValve.cs b/PamhagenSysCtrl/Helpers/Pipeline/ControlledValve.cs
index f4e663d..e57ecf6 100644
--- a/PamhagenSysCtrl/Helpers/Pipeline/ControlledValve.cs
+++ b/PamhagenSysCtrl/Helpers/Pipeline/ControlledValve.cs
@@ -39,6 +39,13 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
                     IsLocked && WantOpen && IsOpen ? PamhagenBrushes.Green :
                     Highlight ?? (isHovering ? Brushes.LightGray : Brushes.DarkGray);
             }
+            if (IsOpen) {
+                _topLine?.Points[1] = _middlePoints.Open.Top;
+                _bottomLine?.Points[1] = _middlePoints.Open.Bottom;
+            } else {
+                _topLine?.Points[1] = _middlePoints.Closed.Top;
+                _bottomLine?.Points[1] = _middlePoints.Closed.Bottom;
+            }
         }
     }
 }
diff --git a/PamhagenSysCtrl/Helpers/Pipeline/ExternalValve.cs b/PamhagenSysCtrl/Helpers/Pipeline/ExternalValve.cs
index eff2ff2..b3e2f28 100644
--- a/PamhagenSysCtrl/Helpers/Pipeline/ExternalValve.cs
+++ b/PamhagenSysCtrl/Helpers/Pipeline/ExternalValve.cs
@@ -17,6 +17,13 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
                 !IsOpen ? PamhagenBrushes.Red :
                 IsOpen ? PamhagenBrushes.Green :
                 Highlight ?? Brushes.DarkGray;
+            if (IsOpen) {
+                _topLine?.Points[1] = _middlePoints.Open.Top;
+                _bottomLine?.Points[1] = _middlePoints.Open.Bottom;
+            } else {
+                _topLine?.Points[1] = _middlePoints.Closed.Top;
+                _bottomLine?.Points[1] = _middlePoints.Closed.Bottom;
+            }
         }
     }
 }
diff --git a/PamhagenSysCtrl/Helpers/Pipeline/Valve.cs b/PamhagenSysCtrl/Helpers/Pipeline/Valve.cs
index f2b79b1..bf3e98b 100644
--- a/PamhagenSysCtrl/Helpers/Pipeline/Valve.cs
+++ b/PamhagenSysCtrl/Helpers/Pipeline/Valve.cs
@@ -26,6 +26,7 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
         protected Polygon? _triangles;
         protected Polyline? _topLine;
         protected Polyline? _bottomLine;
+        protected ((Point Top, Point Bottom) Closed, (Point Top, Point Bottom) Open) _middlePoints;
         protected TextBlock? _text;
 
         public Valve(double x, double y, int orientation, Func<bool> cbOpen) {
@@ -83,6 +84,9 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
                     Graph.ToPx(CenterX + WIDTH / 4, CenterY, scale),
                     Graph.ToPx(CenterX + WIDTH / 2, CenterY + LENGTH / 4, scale),
                 ];
+                if (_topLine != null && _bottomLine != null)
+                    _middlePoints = ((_topLine.Points[1], _bottomLine.Points[1]),
+                        (Graph.ToPx(CenterX - WIDTH / 3, CenterY, scale), Graph.ToPx(CenterX + WIDTH / 3, CenterY, scale)));
             } else {
                 Graph.SetCenter(_background, CenterX, CenterY, LENGTH, LENGTH / 2, scale);
                 _triangles?.Points = [
@@ -101,6 +105,9 @@ namespace PamhagenSysCtrl.Helpers.Pipeline {
                     Graph.ToPx(CenterX, CenterY + WIDTH / 4, scale),
                     Graph.ToPx(CenterX + LENGTH / 4, CenterY + WIDTH / 2, scale),
                 ];
+                if (_topLine != null && _bottomLine != null)
+                    _middlePoints = ((_topLine.Points[1], _bottomLine.Points[1]),
+                        (Graph.ToPx(CenterX, CenterY - WIDTH / 3, scale), Graph.ToPx(CenterX, CenterY + WIDTH / 3, scale)));
             }
             _triangles?.StrokeThickness = border;
             _topLine?.StrokeThickness = border;