diff --git a/TBF/BenchControl/TbfComponents.cs b/TBF/BenchControl/TbfComponents.cs
index 8f24bbe15..064c5e61e 100644
--- a/TBF/BenchControl/TbfComponents.cs
+++ b/TBF/BenchControl/TbfComponents.cs
@@ -44,6 +44,7 @@ namespace TBF.BenchControl
 			Factories.Add(new Elde.FlowMeterTwins.FlowMeterFactory());
             Factories.Add(new Elde.FlowMeterTriplet.FlowMeterFactory());
             Factories.Add(new TestMethods.Adjustment.Factory());
+            Factories.Add(new TestMethods.ChangeOfFlowDirection.Factory());
             Factories.Add(new TestMethods.CombinedWithDetection.TestMethodFactory());
             Factories.Add(new TestMethods.Endurance.Factory());
             Factories.Add(new TestMethods.FixedStart.Single.Factory());
diff --git a/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.cs b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.cs
new file mode 100644
index 000000000..80050ffba
--- /dev/null
+++ b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.cs
@@ -0,0 +1,217 @@
+///
+/// Copyright (c) 2018 Sensus Slovensko a.s.
+///
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Windows.Forms;
+using log4net;
+using Config.Entities;
+using TBF.Resources;
+
+namespace TBF.BenchControl.TestMethods.ChangeOfFlowDirection
+{
+	public partial class ChangeOfFlowDirectionForm : Form, GenericDevices.IHasCompleted
+    {
+		private static readonly ILog log = LogManager.GetLogger(typeof(ChangeOfFlowDirectionForm));
+
+		///
+		/// Updated in constructor
+		/// 
+		readonly int waterMetersCount;		/// Number of text boxes for serial numbers
+		readonly bool[] disabled;
+		Rectangle[] rects;
+
+		///
+		/// Updated in OnAdjustmentInProgress()
+		///
+		double[] error;						/// Created in constructor
+		double errLimLo;
+		double errLimHi;
+
+		///
+		/// Set to 'true' when the form closes
+		///
+		public bool Completed { get { return completed; } }
+		bool completed;
+
+
+        /// <summary>
+        /// Constructor
+        /// </summary>
+        /// <param name="waterMetersCount">Number of text boxes for serial numbers</param>
+		public ChangeOfFlowDirectionForm(IList<GenericDevices.IWaterMeter> waterMeters)
+			: this()
+        {
+			waterMetersCount = waterMeters.Count;
+
+			rects = new Rectangle[waterMetersCount];
+			for (int i = 0; i < waterMetersCount; i++) rects[i] = new Rectangle(385, 30 + 90 * i, 324, 57);
+
+			disabled = new bool[waterMetersCount];
+			for (int i = 0; i < waterMetersCount; i++) disabled[i] = waterMeters[i].Disabled;
+
+			error = new double[waterMetersCount];
+		}
+
+        /// <summary> Parameterless constructor for 3 watermeters </summary>
+        public ChangeOfFlowDirectionForm()
+        {
+			InitializeComponent();
+			ControlBox = false;
+
+			completed = false;
+
+			/// Attach to 'AdjustmentInProgress' handler
+			UiBridge.Bridge.AdjustmentInProgressHandler += delegate(object sender, UiBridge.AdjustmentInProgressEventArgs args)
+			{
+				if (InvokeRequired)
+				{
+					Invoke(new EventHandler<UiBridge.AdjustmentInProgressEventArgs>(OnAdjustmentInProgress), sender, args);
+				}
+				else OnAdjustmentInProgress(sender, args);
+			};
+		}
+
+        void Localize()
+        {
+            Text = Strings.Water_Meter_States;
+            groupBox1.Text = Strings.Water_Meter + " 1";
+            groupBox2.Text = Strings.Water_Meter + " 2";
+            groupBox3.Text = Strings.Water_Meter + " 3";
+            groupBox4.Text = Strings.Water_Meter + " 4";
+            groupBox5.Text = Strings.Water_Meter + " 5";
+            groupBox6.Text = Strings.Water_Meter + " 6";
+			wmErrorLabel1.Text = Strings.Error_pct;
+			wmErrorLabel2.Text = Strings.Error_pct;
+			wmErrorLabel3.Text = Strings.Error_pct;
+			wmErrorLabel4.Text = Strings.Error_pct;
+			wmErrorLabel5.Text = Strings.Error_pct;
+			wmErrorLabel6.Text = Strings.Error_pct;
+            okButton.Text = Strings.OkBtnText;
+        }
+
+		private void WMErrorsForm_Load(object sender, EventArgs e)
+		{
+            Localize();
+
+            Height = 50 + 90 * waterMetersCount;
+
+            if (waterMetersCount < 1 || disabled[0]) groupBox1.Visible = false;
+			if (waterMetersCount < 2 || disabled[1]) groupBox2.Visible = false;
+			if (waterMetersCount < 3 || disabled[2]) groupBox3.Visible = false;
+			if (waterMetersCount < 4 || disabled[3]) groupBox4.Visible = false;
+			if (waterMetersCount < 5 || disabled[4]) groupBox5.Visible = false;
+			if (waterMetersCount < 6 || disabled[5]) groupBox6.Visible = false;
+
+			wmErrorTextBox1.Text = "---";
+			wmErrorTextBox2.Text = "---";
+			wmErrorTextBox3.Text = "---";
+			wmErrorTextBox4.Text = "---";
+			wmErrorTextBox5.Text = "---";
+			wmErrorTextBox6.Text = "---";
+		}
+
+		private void okButton_Click(object sender, EventArgs e)
+		{
+			completed = true;
+			Close();
+		}
+
+		void OnAdjustmentInProgress(object sender, UiBridge.AdjustmentInProgressEventArgs args)
+		{
+			string testName = args.TestName;
+
+			Results.Entities.TestRslt tr = TBF.BenchControl.Sequences.ProcessData.BatchRslts.GetTestRslt(testName, 0);
+			errLimLo = tr.ErrLimLo() + tr.Uncertainty();
+			errLimHi = tr.ErrLimHi() - tr.Uncertainty();
+
+			int count = Math.Min(waterMetersCount, TBF.BenchControl.Sequences.ProcessData.BatchRslts.WMPositionsCount);
+			for (int i = 0; i < count; i++)
+			{
+				Results.Entities.MeterTestRslt mtr = TBF.BenchControl.Sequences.ProcessData.BatchRslts.GetMeterTestRslt(testName, i, CompoundMeterId.Single);
+				if (mtr != null) error[i] = mtr.Error;
+			}
+
+			Redraw();
+		}
+
+		void Redraw()
+		{
+			if (waterMetersCount > 0 && !disabled[0]) wmErrorTextBox1.Text = error[0].ToString("F1");
+			if (waterMetersCount > 1 && !disabled[1]) wmErrorTextBox2.Text = error[1].ToString("F1");
+			if (waterMetersCount > 2 && !disabled[2]) wmErrorTextBox3.Text = error[2].ToString("F1");
+			if (waterMetersCount > 3 && !disabled[3]) wmErrorTextBox4.Text = error[3].ToString("F1");
+			if (waterMetersCount > 4 && !disabled[4]) wmErrorTextBox5.Text = error[4].ToString("F1");
+			if (waterMetersCount > 5 && !disabled[5]) wmErrorTextBox6.Text = error[5].ToString("F1");
+
+			for (int i = 0; i < waterMetersCount; i++) Invalidate(rects[i]);
+		}
+
+		private void WMErrorsForm_Paint(object sender, PaintEventArgs e)
+		{
+			System.Drawing.Graphics graphics = this.CreateGraphics();
+
+			for (int i = 0; i < waterMetersCount; i++)
+			{
+				if (!disabled[i])
+				{
+					PaintOne(graphics, rects[i], error[i], errLimLo, errLimHi);
+				}
+			}
+		}
+
+		void PaintOne(System.Drawing.Graphics g, Rectangle r, double value, double limLo, double limHi)
+		{
+			Rectangle rect1 = new Rectangle(r.Left, r.Top, r.Width / 3, r.Height);
+			Rectangle rect2 = new Rectangle(r.Left + r.Width / 3, r.Top, r.Width / 3, r.Height);
+			Rectangle rect3 = new Rectangle(r.Left + 2 * (r.Width / 3), r.Top, r.Width / 3, r.Height);
+			Rectangle rectCent = new Rectangle(r.Left + r.Width / 2 - 1, r.Top, 3, r.Height);
+
+			Brush redBrush = new SolidBrush(Color.FromName("Salmon"));
+			Brush greenBrush = new SolidBrush(Color.FromName("LightGreen"));
+			Brush centBrush = new SolidBrush(Color.FromName("Green"));
+
+			g.FillRectangle(redBrush, rect1);
+			g.FillRectangle(greenBrush, rect2);
+			g.FillRectangle(redBrush, rect3);
+			g.FillRectangle(centBrush, rectCent);
+
+			int x0 = r.Left + r.Width / 2;
+			int dx = r.Height / 3;
+			int x = (int)((double)r.Width * (2.0 * value - limLo - limHi) / (limHi - limLo) / 6.0f + 0.5f);
+
+			if (x0 - dx + x >= r.Left && x0 + dx + x < r.Left + r.Width)
+			{
+				Point[] triangle = new Point[3]
+				{
+					new Point(x0 - dx + x, r.Top),
+					new Point(x0 + dx + x, r.Top),
+					new Point(x0 + x, r.Top + 2 * r.Height / 3),
+				};
+
+				Brush blackBrush = new SolidBrush(Color.Black);
+				g.FillPolygon(blackBrush, triangle);
+			}
+		}
+
+		#region Forced close handling
+
+		public void StartForceCloseHandler()
+		{
+			UiBridge.Bridge.CloseModelessFormHandler += delegate(object sender, EventArgs args)
+			{
+				if (InvokeRequired) { Invoke(new EventHandler<EventArgs>(OnForceClose), sender, args); }
+				else OnForceClose(sender, args);
+			};
+		}
+
+		void OnForceClose(object sender, EventArgs args)
+		{
+			DialogResult = DialogResult.Cancel;
+			Close();
+		}
+
+		#endregion
+	}
+}
diff --git a/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.designer.cs b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.designer.cs
new file mode 100644
index 000000000..e8c248e4e
--- /dev/null
+++ b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.designer.cs
@@ -0,0 +1,312 @@
+///
+/// Copyright (c) 2018 Sensus Slovensko a.s.
+///
+namespace TBF.BenchControl.TestMethods.ChangeOfFlowDirection
+{
+    partial class ChangeOfFlowDirectionForm
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+			this.groupBox2 = new System.Windows.Forms.GroupBox();
+			this.wmErrorTextBox2 = new System.Windows.Forms.TextBox();
+			this.wmErrorLabel2 = new System.Windows.Forms.Label();
+			this.groupBox1 = new System.Windows.Forms.GroupBox();
+			this.wmErrorTextBox1 = new System.Windows.Forms.TextBox();
+			this.wmErrorLabel1 = new System.Windows.Forms.Label();
+			this.okButton = new System.Windows.Forms.Button();
+			this.groupBox3 = new System.Windows.Forms.GroupBox();
+			this.wmErrorTextBox3 = new System.Windows.Forms.TextBox();
+			this.wmErrorLabel3 = new System.Windows.Forms.Label();
+			this.groupBox4 = new System.Windows.Forms.GroupBox();
+			this.wmErrorTextBox4 = new System.Windows.Forms.TextBox();
+			this.wmErrorLabel4 = new System.Windows.Forms.Label();
+			this.groupBox5 = new System.Windows.Forms.GroupBox();
+			this.wmErrorTextBox5 = new System.Windows.Forms.TextBox();
+			this.wmErrorLabel5 = new System.Windows.Forms.Label();
+			this.groupBox6 = new System.Windows.Forms.GroupBox();
+			this.wmErrorTextBox6 = new System.Windows.Forms.TextBox();
+			this.wmErrorLabel6 = new System.Windows.Forms.Label();
+			this.groupBox2.SuspendLayout();
+			this.groupBox1.SuspendLayout();
+			this.groupBox3.SuspendLayout();
+			this.groupBox4.SuspendLayout();
+			this.groupBox5.SuspendLayout();
+			this.groupBox6.SuspendLayout();
+			this.SuspendLayout();
+			// 
+			// groupBox2
+			// 
+			this.groupBox2.Controls.Add(this.wmErrorTextBox2);
+			this.groupBox2.Controls.Add(this.wmErrorLabel2);
+			this.groupBox2.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.groupBox2.ForeColor = System.Drawing.Color.Black;
+			this.groupBox2.Location = new System.Drawing.Point(25, 102);
+			this.groupBox2.Name = "groupBox2";
+			this.groupBox2.Size = new System.Drawing.Size(333, 81);
+			this.groupBox2.TabIndex = 2;
+			this.groupBox2.TabStop = false;
+			this.groupBox2.Text = "Water Meter 2";
+			// 
+			// wmErrorTextBox2
+			// 
+			this.wmErrorTextBox2.Font = new System.Drawing.Font("Verdana", 27.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.wmErrorTextBox2.Location = new System.Drawing.Point(183, 21);
+			this.wmErrorTextBox2.Name = "wmErrorTextBox2";
+			this.wmErrorTextBox2.Size = new System.Drawing.Size(137, 52);
+			this.wmErrorTextBox2.TabIndex = 1;
+			// 
+			// wmErrorLabel2
+			// 
+			this.wmErrorLabel2.AutoSize = true;
+			this.wmErrorLabel2.Location = new System.Drawing.Point(18, 34);
+			this.wmErrorLabel2.Name = "wmErrorLabel2";
+			this.wmErrorLabel2.Size = new System.Drawing.Size(103, 23);
+			this.wmErrorLabel2.TabIndex = 0;
+			this.wmErrorLabel2.Text = "Error [%]";
+			// 
+			// groupBox1
+			// 
+			this.groupBox1.Controls.Add(this.wmErrorTextBox1);
+			this.groupBox1.Controls.Add(this.wmErrorLabel1);
+			this.groupBox1.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.groupBox1.ForeColor = System.Drawing.Color.Black;
+			this.groupBox1.Location = new System.Drawing.Point(25, 12);
+			this.groupBox1.Name = "groupBox1";
+			this.groupBox1.Size = new System.Drawing.Size(333, 81);
+			this.groupBox1.TabIndex = 1;
+			this.groupBox1.TabStop = false;
+			this.groupBox1.Text = "Water Meter 1";
+			// 
+			// wmErrorTextBox1
+			// 
+			this.wmErrorTextBox1.Font = new System.Drawing.Font("Verdana", 27.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.wmErrorTextBox1.Location = new System.Drawing.Point(183, 21);
+			this.wmErrorTextBox1.Name = "wmErrorTextBox1";
+			this.wmErrorTextBox1.Size = new System.Drawing.Size(137, 52);
+			this.wmErrorTextBox1.TabIndex = 1;
+			// 
+			// wmErrorLabel1
+			// 
+			this.wmErrorLabel1.AutoSize = true;
+			this.wmErrorLabel1.Location = new System.Drawing.Point(18, 34);
+			this.wmErrorLabel1.Name = "wmErrorLabel1";
+			this.wmErrorLabel1.Size = new System.Drawing.Size(103, 23);
+			this.wmErrorLabel1.TabIndex = 0;
+			this.wmErrorLabel1.Text = "Error [%]";
+			// 
+			// okButton
+			// 
+			this.okButton.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.okButton.ForeColor = System.Drawing.Color.Black;
+			this.okButton.Location = new System.Drawing.Point(739, 26);
+			this.okButton.Name = "okButton";
+			this.okButton.Size = new System.Drawing.Size(98, 63);
+			this.okButton.TabIndex = 7;
+			this.okButton.Text = "OK";
+			this.okButton.UseVisualStyleBackColor = true;
+			this.okButton.Click += new System.EventHandler(this.okButton_Click);
+			// 
+			// groupBox3
+			// 
+			this.groupBox3.Controls.Add(this.wmErrorTextBox3);
+			this.groupBox3.Controls.Add(this.wmErrorLabel3);
+			this.groupBox3.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.groupBox3.ForeColor = System.Drawing.Color.Black;
+			this.groupBox3.Location = new System.Drawing.Point(25, 192);
+			this.groupBox3.Name = "groupBox3";
+			this.groupBox3.Size = new System.Drawing.Size(333, 81);
+			this.groupBox3.TabIndex = 3;
+			this.groupBox3.TabStop = false;
+			this.groupBox3.Text = "Water Meter 3";
+			// 
+			// wmErrorTextBox3
+			// 
+			this.wmErrorTextBox3.Font = new System.Drawing.Font("Verdana", 27.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.wmErrorTextBox3.Location = new System.Drawing.Point(183, 21);
+			this.wmErrorTextBox3.Name = "wmErrorTextBox3";
+			this.wmErrorTextBox3.Size = new System.Drawing.Size(137, 52);
+			this.wmErrorTextBox3.TabIndex = 1;
+			// 
+			// wmErrorLabel3
+			// 
+			this.wmErrorLabel3.AutoSize = true;
+			this.wmErrorLabel3.Location = new System.Drawing.Point(18, 34);
+			this.wmErrorLabel3.Name = "wmErrorLabel3";
+			this.wmErrorLabel3.Size = new System.Drawing.Size(103, 23);
+			this.wmErrorLabel3.TabIndex = 0;
+			this.wmErrorLabel3.Text = "Error [%]";
+			// 
+			// groupBox4
+			// 
+			this.groupBox4.Controls.Add(this.wmErrorTextBox4);
+			this.groupBox4.Controls.Add(this.wmErrorLabel4);
+			this.groupBox4.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.groupBox4.ForeColor = System.Drawing.Color.Black;
+			this.groupBox4.Location = new System.Drawing.Point(25, 282);
+			this.groupBox4.Name = "groupBox4";
+			this.groupBox4.Size = new System.Drawing.Size(333, 81);
+			this.groupBox4.TabIndex = 4;
+			this.groupBox4.TabStop = false;
+			this.groupBox4.Text = "Water Meter 4";
+			// 
+			// wmErrorTextBox4
+			// 
+			this.wmErrorTextBox4.Font = new System.Drawing.Font("Verdana", 27.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.wmErrorTextBox4.Location = new System.Drawing.Point(183, 21);
+			this.wmErrorTextBox4.Name = "wmErrorTextBox4";
+			this.wmErrorTextBox4.Size = new System.Drawing.Size(137, 52);
+			this.wmErrorTextBox4.TabIndex = 1;
+			// 
+			// wmErrorLabel4
+			// 
+			this.wmErrorLabel4.AutoSize = true;
+			this.wmErrorLabel4.Location = new System.Drawing.Point(18, 34);
+			this.wmErrorLabel4.Name = "wmErrorLabel4";
+			this.wmErrorLabel4.Size = new System.Drawing.Size(103, 23);
+			this.wmErrorLabel4.TabIndex = 0;
+			this.wmErrorLabel4.Text = "Error [%]";
+			// 
+			// groupBox5
+			// 
+			this.groupBox5.Controls.Add(this.wmErrorTextBox5);
+			this.groupBox5.Controls.Add(this.wmErrorLabel5);
+			this.groupBox5.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.groupBox5.ForeColor = System.Drawing.Color.Black;
+			this.groupBox5.Location = new System.Drawing.Point(25, 372);
+			this.groupBox5.Name = "groupBox5";
+			this.groupBox5.Size = new System.Drawing.Size(333, 81);
+			this.groupBox5.TabIndex = 5;
+			this.groupBox5.TabStop = false;
+			this.groupBox5.Text = "Water Meter 5";
+			// 
+			// wmErrorTextBox5
+			// 
+			this.wmErrorTextBox5.Font = new System.Drawing.Font("Verdana", 27.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.wmErrorTextBox5.Location = new System.Drawing.Point(183, 21);
+			this.wmErrorTextBox5.Name = "wmErrorTextBox5";
+			this.wmErrorTextBox5.Size = new System.Drawing.Size(137, 52);
+			this.wmErrorTextBox5.TabIndex = 1;
+			// 
+			// wmErrorLabel5
+			// 
+			this.wmErrorLabel5.AutoSize = true;
+			this.wmErrorLabel5.Location = new System.Drawing.Point(18, 34);
+			this.wmErrorLabel5.Name = "wmErrorLabel5";
+			this.wmErrorLabel5.Size = new System.Drawing.Size(103, 23);
+			this.wmErrorLabel5.TabIndex = 0;
+			this.wmErrorLabel5.Text = "Error [%]";
+			// 
+			// groupBox6
+			// 
+			this.groupBox6.Controls.Add(this.wmErrorTextBox6);
+			this.groupBox6.Controls.Add(this.wmErrorLabel6);
+			this.groupBox6.Font = new System.Drawing.Font("Verdana", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.groupBox6.ForeColor = System.Drawing.Color.Black;
+			this.groupBox6.Location = new System.Drawing.Point(25, 462);
+			this.groupBox6.Name = "groupBox6";
+			this.groupBox6.Size = new System.Drawing.Size(333, 81);
+			this.groupBox6.TabIndex = 6;
+			this.groupBox6.TabStop = false;
+			this.groupBox6.Text = "Water Meter 6";
+			// 
+			// wmErrorTextBox6
+			// 
+			this.wmErrorTextBox6.Font = new System.Drawing.Font("Verdana", 27.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(238)));
+			this.wmErrorTextBox6.Location = new System.Drawing.Point(183, 21);
+			this.wmErrorTextBox6.Name = "wmErrorTextBox6";
+			this.wmErrorTextBox6.Size = new System.Drawing.Size(137, 52);
+			this.wmErrorTextBox6.TabIndex = 1;
+			// 
+			// wmErrorLabel6
+			// 
+			this.wmErrorLabel6.AutoSize = true;
+			this.wmErrorLabel6.Location = new System.Drawing.Point(18, 34);
+			this.wmErrorLabel6.Name = "wmErrorLabel6";
+			this.wmErrorLabel6.Size = new System.Drawing.Size(103, 23);
+			this.wmErrorLabel6.TabIndex = 0;
+			this.wmErrorLabel6.Text = "Error [%]";
+			// 
+			// WMErrorsForm
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.BackColor = System.Drawing.Color.DarkGoldenrod;
+			this.ClientSize = new System.Drawing.Size(868, 565);
+			this.Controls.Add(this.groupBox6);
+			this.Controls.Add(this.groupBox5);
+			this.Controls.Add(this.groupBox4);
+			this.Controls.Add(this.groupBox3);
+			this.Controls.Add(this.okButton);
+			this.Controls.Add(this.groupBox2);
+			this.Controls.Add(this.groupBox1);
+			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
+			this.Name = "WMErrorsForm";
+			this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;
+			this.Text = "Water Meter States";
+			this.TopMost = true;
+			this.Load += new System.EventHandler(this.WMErrorsForm_Load);
+			this.Paint += new System.Windows.Forms.PaintEventHandler(this.WMErrorsForm_Paint);
+			this.groupBox2.ResumeLayout(false);
+			this.groupBox2.PerformLayout();
+			this.groupBox1.ResumeLayout(false);
+			this.groupBox1.PerformLayout();
+			this.groupBox3.ResumeLayout(false);
+			this.groupBox3.PerformLayout();
+			this.groupBox4.ResumeLayout(false);
+			this.groupBox4.PerformLayout();
+			this.groupBox5.ResumeLayout(false);
+			this.groupBox5.PerformLayout();
+			this.groupBox6.ResumeLayout(false);
+			this.groupBox6.PerformLayout();
+			this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+		private System.Windows.Forms.GroupBox groupBox2;
+		private System.Windows.Forms.TextBox wmErrorTextBox2;
+		private System.Windows.Forms.Label wmErrorLabel2;
+		private System.Windows.Forms.GroupBox groupBox1;
+		private System.Windows.Forms.TextBox wmErrorTextBox1;
+		private System.Windows.Forms.Label wmErrorLabel1;
+        private System.Windows.Forms.Button okButton;
+        private System.Windows.Forms.GroupBox groupBox3;
+        private System.Windows.Forms.TextBox wmErrorTextBox3;
+        private System.Windows.Forms.Label wmErrorLabel3;
+        private System.Windows.Forms.GroupBox groupBox4;
+        private System.Windows.Forms.TextBox wmErrorTextBox4;
+        private System.Windows.Forms.Label wmErrorLabel4;
+        private System.Windows.Forms.GroupBox groupBox5;
+        private System.Windows.Forms.TextBox wmErrorTextBox5;
+        private System.Windows.Forms.Label wmErrorLabel5;
+        private System.Windows.Forms.GroupBox groupBox6;
+        private System.Windows.Forms.TextBox wmErrorTextBox6;
+        private System.Windows.Forms.Label wmErrorLabel6;
+
+	}
+}
\ No newline at end of file
diff --git a/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.resx b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.resx
new file mode 100644
index 000000000..1af7de150
--- /dev/null
+++ b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionForm.resx
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>
\ No newline at end of file
diff --git a/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionSeq.cs b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionSeq.cs
new file mode 100644
index 000000000..e410f0637
--- /dev/null
+++ b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/ChangeOfFlowDirectionSeq.cs
@@ -0,0 +1,121 @@
+///
+/// Copyright (c) 2018 Sensus Slovensko a.s.
+///
+using System;
+using System.Collections.Generic;
+using log4net;
+using Config.Entities;
+using TBF.UiBridge;
+
+namespace TBF.BenchControl.TestMethods.ChangeOfFlowDirection
+{
+	public class ChangeOfFlowDirectionSeq : Sequences.SequenceBase
+    {
+		private static readonly ILog log = LogManager.GetLogger(typeof(ChangeOfFlowDirectionSeq));
+
+		System.Windows.Forms.Form modelessDlg;
+		/// 
+		delegate void ErrorsFormDlgt(ChangeOfFlowDirectionSeq myRef, IList<GenericDevices.IWaterMeter> waterMeters);
+		/// 
+		void OpenWMErrorsForm(ChangeOfFlowDirectionSeq myRef, IList<GenericDevices.IWaterMeter> waterMeters)
+		{
+			myRef.modelessDlg = new ChangeOfFlowDirectionForm(waterMeters);
+			modelessDlg.Show();
+		}
+
+		/// <summary>
+		/// Adjustment method sequence
+		/// </summary>
+		/// <param name="test">Test entity</param>
+		/// <returns>
+		///		Event.Done . . . . . . . OK
+		///		Event.UiCmdStop  . . . . Stopped by the user using the on-screen button STOP
+		///		Event.OpArgumentError  . Target flow is out of range
+		///		Event.Error  . . . . . . Unspecified error
+		/// </returns>
+		public IList<Event> Execute(Test test, int repetitionNr, bool isLastRepetition, DebugMode mode)
+		{
+            ///
+            /// Find purge suquences
+            ///
+            TransitionSequence benchFillSeq = null;
+            TransitionSequence benchEmptySeq = null;
+            foreach (var transition in StateMachine.TransitionSequences)
+            {
+                if (transition.Name == StateMachine.Procedure.TransitionStart) benchFillSeq = transition;
+                if (transition.Name == StateMachine.Procedure.TransitionEnd) benchEmptySeq = transition;
+            }
+
+            IList<Event> e = new List<Event>();             /// Events from currently running operations
+            checkUiOp = new Operations.CheckUIOp(true);     /// Runs in more then one state
+
+			/// Start the test, initialize test results
+			Bridge.OnTestSelected(this, new TestSelectedEventArgs(test, repetitionNr, inPath, benchPath, outPath, sensPath, 0));
+			string testName = Results.Utils.GetTestName(test.Name, test.Repeats, repetitionNr);
+			TestStartTime = DateTime.Now;
+
+
+            ///
+            /// Empty the line
+            ///
+            Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Config.Entities.Progress.TransitionBefore));
+            switch (Transition(benchEmptySeq, TransitionContext.PurgeEnd))
+            {
+                case Event.Error:
+                case Event.UiCmdStop:
+                    goto stopTest;
+                default:
+                    break;
+            }
+
+
+            ///
+            /// Show a dialog with OK button and an appropriate message
+            ///
+            Bridge.OnAdjustmentInProgress(this, new AdjustmentInProgressEventArgs(testName));
+            Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Config.Entities.Progress.Test));
+            Bridge.OnActivity(this, test.Method);
+            State.Create(string.Format("{0}({1}) : Turn the direction of watermeters", test.Method, test.Name))
+                 .AddOperation(checkUiOp)
+                 .AddOperation(new Operations.MessageBoxOp(TBF.Resources.Strings.Press_OK_when_done))
+                 .EnterState();
+            do
+            {
+                e = StateMachine.WaitRunDevsRunOps();
+
+                Bridge.OnTestProgress(this, new TestProgressEventArgs(test, 1, Config.Entities.Progress.Test));
+
+                if (e.Contains(Event.Error))      goto stopTest;
+                if (TestAndLogUiCmdStop(test, e)) goto stopTest;
+            }
+            while (!e.Contains(Event.OK));
+
+
+            ///
+            /// Fill the line
+            ///
+            Bridge.OnTestProgress(this, new TestProgressEventArgs(test, repetitionNr, Config.Entities.Progress.TransitionAfter));
+            switch (Transition(benchFillSeq, TransitionContext.PurgeBegin))
+            {
+                case Event.Error:
+                case Event.UiCmdStop:
+                    goto stopTest;
+                default:
+                    break;
+            }
+
+
+            /// Create a list with one item 'retVal' (default is Event.Done) and return it
+            IList<Event> retList = new List<Event>(1);
+            retList.Add(Event.Done);
+            return retList;
+
+		stopTest:
+
+			/// Create a list with one item 'retVal' (default is Event.Done) and return it
+			IList<Event> retList2 = new List<Event>(1);
+            retList2.Add(Event.UiCmdStop);
+			return retList2;
+		}
+    }
+}
diff --git a/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/Factory.cs b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/Factory.cs
new file mode 100644
index 000000000..35387bc8d
--- /dev/null
+++ b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/Factory.cs
@@ -0,0 +1,30 @@
+///
+/// Copyright (c) 2018 Sensus Slovensko a.s.
+///
+using System.Collections.Generic;
+using TBF.BenchControl.Generic;
+using TBF.BenchControl.Configs.NameOnly;
+
+namespace TBF.BenchControl.TestMethods.ChangeOfFlowDirection
+{
+	public class Factory : IComponentFactory
+	{
+        public string ClassName { get { return this.GetType().Namespace.Substring(17); } }
+
+		public void ResetStaticProperties() { TestMethod.ResetStaticProperties(); }
+
+		public IComponent DummyComponent() { return new TestMethod(); }
+
+		public IComponent GetComponent(IComponentCfg cfg, IList<IComponent> components) { return new TestMethod(cfg); }
+
+        public IComponentCfg DefaultConfig()
+        {
+            return new TestMethodCfg(this.GetType().Namespace.Substring(29), this);
+        }
+
+		public IComponentCfg CmpntCfgFromCmpntEntity(Config.Entities.Component component)
+		{
+			return ComponentCfgBase.CreateFromDbEntity(TestMethodCfg.Serializer, component, this);
+		}
+	}
+}
diff --git a/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/TestMethod.cs b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/TestMethod.cs
new file mode 100644
index 000000000..f84788d18
--- /dev/null
+++ b/TBF/BenchControl/TestMethods/ChangeOfFlowDirection/TestMethod.cs
@@ -0,0 +1,35 @@
+///
+/// Copyright (c) 2018 Sensus Slovensko a.s.
+///
+using System;
+using System.Collections.Generic;
+using log4net;
+using Config.Entities;
+using TBF.BenchControl;
+
+namespace TBF.BenchControl.TestMethods.ChangeOfFlowDirection
+{
+	public class TestMethod : ComponentBase, GenericDevices.ITestMethod
+	{
+		private static readonly ILog log = LogManager.GetLogger(typeof(TestMethod));
+        public override string ToString() { return string.Format("TestMethods.ChangeOfFlowDirection({0})", Cfg.ToString(1)); }
+
+		public bool CanTest(MetersKind meters) { return meters == MetersKind.Single; }
+        public bool DoTransitions() { return true; }
+
+		public TestMethod()
+		{
+		}
+
+		public TestMethod(Generic.IComponentCfg cfg)
+            : base(cfg)
+        {
+			log.Debug(this.ToString());
+		}
+
+		public IList<Event> Execute(Test test, int repetNr, bool isLastRepetition)
+		{
+			return (new ChangeOfFlowDirectionSeq()).Execute(test, repetNr, isLastRepetition, DebugLevel);
+		}
+	}
+}
diff --git a/TBF/Resources/Strings.Designer.cs b/TBF/Resources/Strings.Designer.cs
index 50584d88a..4b682f0c9 100644
--- a/TBF/Resources/Strings.Designer.cs
+++ b/TBF/Resources/Strings.Designer.cs
@@ -2859,6 +2859,15 @@ namespace TBF.Resources {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Press OK when you are done..
+        /// </summary>
+        internal static string Press_OK_when_done {
+            get {
+                return ResourceManager.GetString("Press_OK_when_done", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Pressure.
         /// </summary>
diff --git a/TBF/Resources/Strings.cs.resx b/TBF/Resources/Strings.cs.resx
index ede51e3e8..3e4955461 100644
--- a/TBF/Resources/Strings.cs.resx
+++ b/TBF/Resources/Strings.cs.resx
@@ -1317,4 +1317,7 @@
   <data name="Pressure" xml:space="preserve">
     <value>Tlak</value>
   </data>
+  <data name="Press_OK_when_done" xml:space="preserve">
+    <value>Po dokončení stiskněte tlačítko OK.</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/TBF/Resources/Strings.de.resx b/TBF/Resources/Strings.de.resx
index 6517f9839..4a45c6cb7 100644
--- a/TBF/Resources/Strings.de.resx
+++ b/TBF/Resources/Strings.de.resx
@@ -1446,4 +1446,7 @@
   <data name="Flow_adjustment_failed" xml:space="preserve">
     <value>Durchfluss nicht erreicht</value>
   </data>
+  <data name="Press_OK_when_done" xml:space="preserve">
+    <value>Drucken Sie OK, wenn Sie fertig sind.</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/TBF/Resources/Strings.resx b/TBF/Resources/Strings.resx
index aa1761fd9..491c6b8d7 100644
--- a/TBF/Resources/Strings.resx
+++ b/TBF/Resources/Strings.resx
@@ -1852,4 +1852,7 @@
   <data name="Remote_db_is_not_compatible" xml:space="preserve">
     <value>Remote database is not compatible.</value>
   </data>
+  <data name="Press_OK_when_done" xml:space="preserve">
+    <value>Press OK when you are done.</value>
+  </data>
 </root>
\ No newline at end of file
diff --git a/TBF/TBF.csproj b/TBF/TBF.csproj
index 66408fa8d..ecbb9c998 100644
--- a/TBF/TBF.csproj
+++ b/TBF/TBF.csproj
@@ -918,6 +918,15 @@
     <Compile Include="BenchControl\TestMethods\Adjustment\WMErrorsForm24.designer.cs">
       <DependentUpon>WMErrorsForm24.cs</DependentUpon>
     </Compile>
+    <Compile Include="BenchControl\TestMethods\ChangeOfFlowDirection\ChangeOfFlowDirectionSeq.cs" />
+    <Compile Include="BenchControl\TestMethods\ChangeOfFlowDirection\Factory.cs" />
+    <Compile Include="BenchControl\TestMethods\ChangeOfFlowDirection\TestMethod.cs" />
+    <Compile Include="BenchControl\TestMethods\ChangeOfFlowDirection\ChangeOfFlowDirectionForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="BenchControl\TestMethods\ChangeOfFlowDirection\ChangeOfFlowDirectionForm.designer.cs">
+      <DependentUpon>ChangeOfFlowDirectionForm.cs</DependentUpon>
+    </Compile>
     <Compile Include="BenchControl\TestMethods\Endurance\Component.cs" />
     <Compile Include="BenchControl\TestMethods\Endurance\CycleStep.cs" />
     <Compile Include="BenchControl\TestMethods\Endurance\EnduranceSeq.cs" />
@@ -2437,6 +2446,9 @@
     <EmbeddedResource Include="BenchControl\TestMethods\Adjustment\WMErrorsForm24.resx">
       <DependentUpon>WMErrorsForm24.cs</DependentUpon>
     </EmbeddedResource>
+    <EmbeddedResource Include="BenchControl\TestMethods\ChangeOfFlowDirection\ChangeOfFlowDirectionForm.resx">
+      <DependentUpon>ChangeOfFlowDirectionForm.cs</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="BenchControl\TestMethods\Endurance\CycleDlg.pl.resx">
       <DependentUpon>CycleDlg.cs</DependentUpon>
     </EmbeddedResource>