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Main vent on one pipe steam system in small building

mike jones
mike jones Member Posts: 32
Main vent on one pipe steam system in small building


We seem to have wet steam in a small 10 unit townhouse. Researching this site led us to check the main vent, a cheap us air vent valve which was replaced with another cheapy that got stuck closed within the first heating cycle. Amazing. Our pressure is set at only 1 lb on the Honeywell gadget and doesn’t register on the circular guage psi. Someone suggested a Caddilac Gorton #2 for $50. Is this really what we should use, we want to be sure that it is not oversized and will NOT actually lead to more problems. You guys are amazing and we thank you in advance for any possible solutions.
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