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vent sizing

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chris_68
chris_68 Member Posts: 18
Need some new vents for my single pipe steam system. The main vent is not functioning properly (leaking steam). It is currently a vent rite 77 and serves about 60 feet of 2.5" and 40 feet of 1.5" main/return line. Should I upsize the vent or add two? What do you think.
Also, does anyone reccomend a specific adjustable radiator vent - How is the Hoffman 1a? Thanks!
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