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Main Vent Antler
fxrgrunt
Member Posts: 157
So I've decided on the main vents. On my 66ft line I am going to put a Gorton 2 on top of a wye strainer with a nipple to get as high as I can fit it. On the 47ft line i have 3 MOM #1s at the house so I was going to run those on an antler for that main. My question is, should I run 1/2" nipples to the main vents or 3/4"?
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The gorton #2 has a 1/2" nipple on it, and the #1 ironically has a double threaded nipple that can take 1/2" or 3/4"
1/2" is fine
I don't think I've seen a strainer on a vent before, what's the thinking there?NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el1 -
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ethicalpaul said:The gorton #2 has a 1/2" nipple on it, and the #1 ironically has a double threaded nipple that can take 1/2" or 3/4" 1/2" is fine I don't think I've seen a strainer on a vent before, what's the thinking there?0
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OK. Once a week sounds...optimisticNJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el1
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ethicalpaul said:OK. Once a week sounds...optimistic2
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Fred said:1/2" is more than adequate. I'd get rid of the MOM's if I were you and use a Gorton #2 on that main as well. Maybe two on the 66ft main, depending on the size (diameter) of the main.
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ethicalpaul said:The gorton #2 has a 1/2" nipple on it, and the #1 ironically has a double threaded nipple that can take 1/2" or 3/4" 1/2" is fine I don't think I've seen a strainer on a vent before, what's the thinking there?
https://heatinghelp.com/systems-help-center/balancing-one-pipe-steam-systems/
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Thanks Fred. The mains are both 2". If I did the calculation correctly the 66ft main would require around 1.51 cfm and the 47ft would require 1.08. I believe the Gorton #2 does around 1.80 and each MOM does .59 so 2 would be 1.18 and 3 would 1.77 or just about equal to the #2. I figured I would run those being I had them already this year and then switch next year to more #2s if I need it. I'm not really sure how much venting past your needs is adequate or if it's possible to over vent.fxrgrunt said:Fred said:1/2" is more than adequate. I'd get rid of the MOM's if I were you and use a Gorton #2 on that main as well. Maybe two on the 66ft main, depending on the size (diameter) of the main.
Can't really over vent, but can overspend. There is a point of diminishing returns.
I love the venting capacity chart, but feel people should lower expectations. The capacities you are quoting are at 2 ounces of pressure. Remember this, on startup, and even when the steam starts flowing you are at zero pressure. You can only build pressure if you close vents or don't have enough venting. So to get the venting capacity you are looking at you, for discussion purposes, have to stop the steam with inadequate venting, then it will get to that. If you have enough venting the steam will move faster and build no pressure, or very very little, enough to overcome piping losses. At zero pressure the venting capacity is even less than the 1 ounce rating.
One of the users on here used to say 1 Gorton #2 for every 20' of 2" pipe, I'd say more like 25'-30' for economics, but that should give you an idea of where to start.
Trust me when you get the main venting correct, it will be like a different system.1 -
KC_Jones said:
Can't really over vent, but can overspend. There is a point of diminishing returns. I love the venting capacity chart, but feel people should lower expectations. The capacities you are quoting are at 2 ounces of pressure. Remember this, on startup, and even when the steam starts flowing you are at zero pressure. You can only build pressure if you close vents or don't have enough venting. So to get the venting capacity you are looking at you, for discussion purposes, have to stop the steam with inadequate venting, then it will get to that. If you have enough venting the steam will move faster and build no pressure, or very very little, enough to overcome piping losses. At zero pressure the venting capacity is even less than the 1 ounce rating. One of the users on here used to say 1 Gorton #2 for every 20' of 2" pipe, I'd say more like 25'-30' for economics, but that should give you an idea of where to start. Trust me when you get the main venting correct, it will be like a different system.Fred said:1/2" is more than adequate. I'd get rid of the MOM's if I were you and use a Gorton #2 on that main as well. Maybe two on the 66ft main, depending on the size (diameter) of the main.0 -
ethicalpaul said:OK. Once a week sounds...optimistic0
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They will be very small, you don't really have to worry. You can wash them in soapy water if you want to but usually those small 1/2" nipples don't have much or any oil on them anyway.NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el1
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ethicalpaul said:They will be very small, you don't really have to worry. You can wash them in soapy water if you want to but usually those small 1/2" nipples don't have much or any oil on them anyway.1
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Your Y strainers appear to be backwards.1
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KC_Jones said:Your Y strainers appear to be backwards.0
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Which way is the flow???NJ Steam Homeowner. See my sight glass boiler videos: https://bit.ly/3sZW1el1
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ethicalpaul said:Which way is the flow???0
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Alright guys. So I deleted the wye strainers for now. Next year I'll remove the 3/8 nipples and couplings coming out of the T so I can run them. Ended up boiling the old hoffman 75 in vinegar and running next to to gorton no 2 on the 66ft main then the 3 moms on the shorter 47ft main. I'll eventually switch the 75 to another gorton 2 but it's what I have now. The pipe unions made it a hell of a lot easier to install for sure. Let me know if everything looks good!0
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In your first picture, the antler looks like it is pitched down. If it is, it will hold water and one or both of those vents may not work. Pitch the antler so it can drain back into the main.0
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Fred said:In your first picture, the antler looks like it is pitched down. If it is, it will hold water and one or both of those vents may not work. Pitch the antler so it can drain back into the main.1
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