12/20/2018 4:04 PM | |
Joined: 3/14/2008 Last visit: 11/11/2024 Posts: 2126 Rating: (951)
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Hi Piotr58, The two thick lines just mean that the icon is non rotating. Normally the APL block icons for valves (without thick line) will rotate, so if you have horizontal valve in closed position, when opening/opened, the valve will be vertical. This is done for the people that are colorblind, to indicate whether the valve is opened or not. |
If I could help you, you can use the RATE button. Thank you. |
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