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Old 11-19-23, 09:50 AM   #32
dguzzi
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Join Date: Nov 2014
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You might check Belimo brand valves, you can get them configured so power on is open and power off close by a spring. Also available with extra benefit of modulation to control flow (that requires control circuit) Very durable and cost effective.
We used them for years on centrifuge systems in machine shop settings in order to prevent over pressure in the feed system. I have a couple open/close to prevent floods if water is sensed on my basement floor.
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