internal static void close(IValve valve)
        {
            if (valve == null)
            {
                return;
            }

            if (!dictionary.ContainsKey(valve))
            {
                return;
            }

            FormValveInfo formValveInfo = dictionary[valve];

            formValveInfo.Close();
        }
        internal static FormValveInfo show(IValve valve)
        {
            FormValveInfo formValveInfo;

            if (dictionary.ContainsKey(valve))
            {
                formValveInfo = dictionary[valve];
                formValveInfo.BringToFront();
            }
            else
            {
                formValveInfo = new FormValveInfo(valve);
                formValveInfo.Show();

                dictionary.Add(valve, formValveInfo);
            }

            return(formValveInfo);
        }