Question. The air scoop on my furnace is threaded for a 1/8 inch NPT air vent. It would be really inconvenient to change it, but I am having a lot of problems with air in the system. Would there be any advantage to using an adapter to increase this to 1/2 inch and use a larger air vent such as the 5023 or 551 Discal, or would the 1/8 inch MiniCal work just as well. Thank you.
PS. The 4 vents on the return side are 1/8 inch and mounted on brass elbows. I am planning on replacing them with 551s as it will be easy to replace the elbows.
Question. The air scoop on my furnace is threaded for a 1/8 inch NPT air vent. It would be really inconvenient to change it, but I am having a lot of problems with air in the system. Would there be any advantage to using an adapter to increase this to 1/2 inch and use a larger air vent such as the 5023 or 551 Discal, or would the 1/8 inch MiniCal work just as well. Thank you.
PS. The 4 vents on the return side are 1/8 inch and mounted on brass elbows. I am planning on replacing them with 551s as it will be easy to replace the elbows.