"Or am I too worried about forcing 200+ PSI through the system including the copper lines and that heat exchanger."
What size and wall thickness copper lines?
What is the design pressure (or What size and wall thickness) of the heat exchanger?
Hydro records
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Lopez Mike
- Full Steam Ahead
- Posts: 1925
- Joined: Wed Dec 07, 2011 6:41 am
- Boat Name: S.L. Spiffy
- Location: Lopez Island, Washington State, USA
Re: Hydro records
Since the feed water pump output is isolated from the boiler by both a shut off valve and a check valve, you may use an inexpensive water pressure relief valve as found on a domestic water heater. Maybe a trifle agricultural to gaze upon but serviceable.
They have a pipe fitting output so you may plumb the relieved water back to the hot well or a makeup tank and avoid wasting water.
As I sit here I cannot remember what pressure they are set for (I believe about 120 psi) but since it is not a major safety issue you could adjust it higher if needed without offending the gods. They are also temperature triggered at about 200 to 210 F but if your feed water is that hot, then you are doing such a great job of being efficient that you can take the time to build your own valve. (grin)
I'll bet McMaster Carr has one for cheap.
Mike
They have a pipe fitting output so you may plumb the relieved water back to the hot well or a makeup tank and avoid wasting water.
As I sit here I cannot remember what pressure they are set for (I believe about 120 psi) but since it is not a major safety issue you could adjust it higher if needed without offending the gods. They are also temperature triggered at about 200 to 210 F but if your feed water is that hot, then you are doing such a great job of being efficient that you can take the time to build your own valve. (grin)
I'll bet McMaster Carr has one for cheap.
Mike
If you think you are too small to make a difference, try sleeping with a mosquito.
Dalai Lama
Dalai Lama