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| Which of the following guidelines is considered to reflect good design practices for shipboard steam heating systems? |
| A) Provide a dirt pocket and strainer ahead of the steam trap on a unit heater return. |
| B) Wherever possible install vertical runs for condensate piping. |
| C) Provide all units with a dirt trap and gate valve in the supply and a check valve on the return. |
| D) Provide orifice-type bypasses for all traps and automatic valves. |
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