Dry line sizing

[butler]

Have a Gast 2565, it will only be about 40 ft from Releaser.. Can I use a 3/4" line or should I go a little bigger?

One more question ... Going to put in moisture trap and a check valve..where is best location for them .. Close to pump or Releaser?

[highlandcattle]

Ron put in an inch dry line. Really needed it because of such a long way to pump.

[Russell Lampron]

I would go with 1 1/4" or 1 1/2" pipe from the pump to the releaser. I have moisture traps at the releaser and at the pump. My releaser is 1500' away from my pump.

[maple flats]

How many taps? how long is the main?

[butler]

I have roughly 300 taps on 1000 ft of mainline. I can put my vacuum pump right beside my Releaser within 30-40 ft. My main is 3/4"

[BreezyHill]

Check valve close to pump to contain oil and the water trap closer to the releaser. You will get some condensation in the line to the pump but you want to keep it cool to condensate as much vapor as possible.

At 1000' of 1" main you will have enough 7 cfms and capacity for over 500 taps.

At 2% slope you r 3/4" main will handle 195 gallons per minute and peak flow on 300 taps will be 60 gallons( .2 gpm/tap peak flow).

I would run 1" dry line to safe guard against your main being frozen on a cloudy 34 degree day and your dry will be the conductor of sap and the vac conductor. You could do a 3/4" line if the budget is limited but there will be days that vac will make the trees flow and the sun will not be out enough to rapidly thaw the wet line. I have had this happen and it is amazing to see that ice just sit there and the trees are flowing some sap.

Good Luck!

Ben

[butler]

Perfect.. Thanks for the info everyone

[maple flats]

While a dry line in your case can help get vacuum out to the bush better and it can transport sap in the instance that the wet line is frozen, what you are proposing in reality is not a wet/dry system. On a wet/dry the wet line gets no saddles into it, they are in mains that run off the wet/dry and where those mains enter the system is a manifold or a whip method of separating the air (or gas bubbles) from the sap whith the sap taking the lower wet line and the "air" taking the higher dry line. Your suggestion can certainly help, but only if you have a connection between the 2 often enough to move the vacuum and to accept the wet when necessary. In a wet/dry this is generally every 50-100' depending on the spacing of the mains.

[BreezyHill]

You can build your own water trap and it will act as a balance tank to equalize the drop of vac your releaser dump produces.

3" pvc works great. Add a electric float switch and you can make it automatic and only need to check on it rather then worry about it being full and the pump is dead headed and the system is off vac until you drain and reset the trap.

[butler]

Sorry... Wrong wording... I am not making a wet/dry system. I was referring to my vacuum line from my pump to the releaser. They will be very close together..., 30 ft. Will 3/4" pipe be big enough?

[maple flats]

I would run a 1" line.

[butler]

Ok.. Thanks.. 1"

[spud]

I would run 1 1/2 to the releaser. If you run one inch you will kill the amount of CFMs that go into the woods.

Spud

[Russell Lampron]

I ran 1 1/4" to mine and should have gone bigger for faster recovery when the releaser dumps.

[BreezyHill]

from the pump to the releaser you want as big as you can at a cost that is within budget. My pump room is in the metal building above my sugar...basement built into the side hill with building above and another 52' on solid ground. From the pumps to the releaser I used 3" pvc to maximize transfer and to have a balance tank.

13226

You can see the white pvc line above.

The charts show 1" will be adequate at 40' with 1" providing 17 cfm at 50'. But the secret to quicker recovery times on a mechanical releaser is an area of stored vacuum to balance the releaser from 0 up quicker.