3/16 elevation

[theguywiththename]

Alright, what sort of elevation change is needed on a 3/16 system? Would it work with 10' in elevation change across say 150'? 100'? 200'?

[DrTimPerkins]

Alright, what sort of elevation change is needed on a 3/16 system? Would it work with 10' in elevation change across say 150'? 100'? 200'?

It will work, but the maximum vacuum you would get is around 8.8" Hg at the uppermost trees, less as the difference in elevation decreases. Length is pretty much immaterial.

[5050racing]

Where can you buy 3/16 tubing and connectors

[DrTimPerkins]

Where can you buy 3/16 tubing and connectors

Both D&G and CDL carry 3/16" tubing and fittings.

[5050racing]

Thanks now the next rigid or flex for my runs or will either work what's better,taps cv taps still with a small piece of 5/16 and slide over it or go with 3/16 taps from like cdl or is the cv made in 3/16 thanks!

[5050racing]

So if I have about a 75' drop over 300' to 500' after that can I install the 3/16 into a 1/2" main all with slope another 300' or so to my collection tank n still have the vacuum like it should,I have 3 runs all about 300' to 500' planing to use 3/16 each run about 20 taps on one 15 on other and one has only 7 taps I know it sounds like a lot of equipment for just that many but at the collection tank I have 12 or so taps there to add but I have to plow the snow with my bulldozer to get up hill to reach where my tank is now and go in for some on buckets hard to access with 2' plus snow on the ground with my cub cadet volunteer all wheel drive,I already have 600' of the 1/2" main up there now with 5/16 feeding it?

[wurmdert]

If you connect the 3/16 to the main line you wont lose the vacuum in the 3/16 but you wont have vacuum in the 1/2. Your elevation change must me measured where the 3/16 meets the 1/2 as the low point as that is where the "column effect" ends. Most vent the mainline so the sap can flow free and fast once it leaves the 3/16.

[5050racing]

Nice that's what I thought thanks for reply,I bought 3 vacuum gauges n will install them on the 5/16 then measure it and see the difference on the 3/16 any answer on what taps to use or how to connect the cv taps

[wurmdert]

I dont believe there are any 3/16 check valve spouts...but you can get a T that has two 3/16 barb for the lateral and one 5/16 barb so you can use a 5/16 drop and cv spout. you can also get 5/16 to 3/16 adapters so you can convert to 5/16 saddle at the mainline if you dont want to use the 3/16 D&G Saddle. The saddle isnt super important, because it dosnt have to be air tight, as that is where the vacuum ends. It just needs to be able to transfer sap from one line to another.

[5050racing]

Very good thanks

[DrTimPerkins]

... or is the cv made in 3/16 thanks!

CV is not made in 3/16"

[5050racing]

So I will have to adapt with tees or y thanks you would still recommend using cv with the 3/16

[DrTimPerkins]

So I will have to adapt with tees or y thanks you would still recommend using cv with the 3/16

If all your tubing is brand-new this year, then any advantage, especially on gravity, will be minimal this year. Once the tubing has been used a year or two, then the advantage begins to accumulate.

[5050racing]

Thank you Dr for helping me out and I'm sure others on here!!! I know I'm just a little guy on the big mountain here but by me installing this set up will allow me to collect a lot easier ,not that I don't like work but getting equipment stuck and trying to get to work on time when the big flows happen and sounds like I will end up with a better set up.Im going to install the vacuum gauges then switch out at some point and install the new run that the 3/16 will let me reach into the woods where it really hard carrying buckets out and I have great elevation so I will try it!