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Posted by Joe Lambert on April 05, 2006 at 08:32:56:
In Reply to: steam header posted by John T on April 04, 2006 at 16:13:32:
I thought it was code in a multi-boiler system to have what is known as a stop-check valve on each boiler. This is the first valve on the steam side of the boiler and has a handwheel like a gate and a check valve internal. Only a few manufacturers make these, one is CRANE either the figure 28 for straight or 30 for angle. Look at the following for a catalogue: http://www.cranevalve.com/books.htm