Dry line size?

[500592]

I am wounding what size dry line We should use it will have close to a thousand taps thanks

[500592]

Another thing is that the dry line is going to the releaser from the pump.

[Thad Blaisdell]

explain going from the pump. the line from the pump to the releaser is a dedicated line. that is the only thing that line does. from the releaser to the tree has a wet and dry line, for a 1000 taps a 3/4 wet and 1" dry is sufficient if you are not talking a huge distance. From pump to releaser I would go no smaller than 1.25".

[Amber Gold]

IMO. 1000 taps needs a 1" wet line and 1.25" dry line. I have ~600 taps on my 3/4" wet/1" dry and the sap's frequently coming down the dry line...wet/dry running at 2% slope. It could handle more taps w/ more pitch, but I don't think another 400 taps.

[sapmaple]

I also have a wet dry line question What size for 3000 taps 2% slope and would you decrease the size of the pipes after the first 1000 feet of distance and so on for the next 1000 feet??

[spud]

I also have a wet dry line question What size for 3000 taps 2% slope and would you decrease the size of the pipes after the first 1000 feet of distance and so on for the next 1000 feet??

On the back side of my woods I have 2844 taps. I run 1 1/2 inch wet/dry lines. I was told by some it was overkill and that I could have used 1 1/4 wet line. Turns out I had so much sap coming in that it would flood my booster tank. The 1 1/2 inch wet line could not handle all the sap so I started getting some down the dry line. My only option is to run a second wet line. I plan to put in a 1 1/4 inch back-up wet line for days when the sap is really running good. I would not decrease the size of your pipe at all. I would use booster tanks at every 1000 feet.

Spud

[Amber Gold]

I went to a Leader tubing seminar last year (I think), if I remember the numbers correctly the following wet/dry lines sizes are good for the number of taps stated @ 2-5% slope.

600 taps 3/4"W/1"D
1000 taps 1"W/1.25"D
1500 taps 1.25"W/1.5"D
2000 taps 1.5"W/2"D

Don't quote me on the exact tap #'s because I'm pulling these from memory, but it was something like this.

[Sunday Rock Maple]

We have a 1 1/2" dry line that runs 1,400' from the vacuum pump to a releaser that is connected to 1,400 taps. We have no vacuum loss over that distance, the pump is 60 cfm for a total of 2,400 taps (1,000 on another releaser). Perhaps dry lines are like garages -- nobody ever built one too big.

[lew]

Steve Childs put together a very informative book on vacuum that includes line sizing at varying distances. Includes wet systems and wet/dry systems. Only cost $25 if memory serves me. Every woods and situation is different. this book helped us tremendously. By reading the charts you can see how just adding a larger pump(more cfm's) is useless if your lines are not sized properly. Cheap information. Its available through the Cornell website I believe.

[spud]

I bought that book a while back. It is very good and well worth the money.

Spud

[GeneralStark]

If you are web savvy you don't even need to buy the book. Follow this link to a list of Cornell Extension Webinars:

http://maple.dnr.cornell.edu/web/schedule.htm

The one on vacuum systems was conducted by Steve Childs and includes several files/documents to help design wet/dry vacuum systems. Excellent information.

[Thad Blaisdell]

IMO. 1000 taps needs a 1" wet line and 1.25" dry line. I have ~600 taps on my 3/4" wet/1" dry and the sap's frequently coming down the dry line...wet/dry running at 2% slope. It could handle more taps w/ more pitch, but I don't think another 400 taps.

If your sap is coming down the dry line it is because of leaks or freezing at night not overproduction of sap. 600 taps making even 1200 gal in a 24 hour period is only 50 gal per hour, less than a gal a min. .83 gpm on average. That is sure not sufficient to flood a 3/4 line.

Also to consider on size would be how many mainlines would be coming off.

[500592]

I am talking about from the pump to the releaser so I am thinking 1 1/4 line

[wiam]

I am talking about from the pump to the releaser so I am thinking 1 1/4 line

Not trying to be rude, but I think this is a terminology problem. I think most of us know a "dry line" as the line over a wet line. I consider what you are talking about as a vacuum line. Mine vacuum line is 1.25" x 1600'. Keeps 25" on 1000 taps just fine.

[500592]

That makes a lot of sense now thanks Wiam I didn't really know what to call it thanks for the replies

[lew]

General stark, I too thought that, but not all the info is on the website. There is a good deal, but not all. It is well worth paying the 25 and have it shipped