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Posted by tom on July 26, 2002 at 15:58:41:
In Reply to: Boiler Blowdown posted by Cody Lawton on July 26, 2002 at 05:44:32:
This procedure correct I believe. This prevents trapping high pressure steaming water between the valves. The second valve is used as a sealing valve. If the blowdown valve becomes defective the boiler really should be shutdown for repair.