Distance between vacuum pump and releaser

[Atgreene]

GAST 2565

Power 1-1/2 hp ( 1.1 kW )

Max Flow (50 Hz) 16.5 cfm ( 28.0 m3/h )

Max Flow (60 Hz) 21.0 cfm ( 35.7 m3/h )

Max Pressure (50 Hz) 25 psi ( 1.7 bar )

Max Pressure (60 Hz) 25 psi ( 1.7 bar )

Max Vacuum (60 Hz) 28.0 in-Hg ( 65.0 mbar abs )

Weight 38 lbs ( 16 kg )

Min Temperature 33.8 °F ( 1 °C )

Max Temperature 104 °F ( 40 °C )

Trying to find the exact specs on the leader. Waiting on model #.

[Atgreene]

GAST 2565

Power 1-1/2 hp ( 1.1 kW )

Max Flow (50 Hz) 16.5 cfm ( 28.0 m3/h )

Max Flow (60 Hz) 21.0 cfm ( 35.7 m3/h )

Max Pressure (50 Hz) 25 psi ( 1.7 bar )

Max Pressure (60 Hz) 25 psi ( 1.7 bar )

Max Vacuum (60 Hz) 28.0 in-Hg ( 65.0 mbar abs )

Weight 38 lbs ( 16 kg )

Min Temperature 33.8 °F ( 1 °C )

Max Temperature 104 °F ( 40 °C )

Trying to find the exact specs on the leader. Waiting on model #.

[VT_K9]

We have a liquid ring pump which is oil cooled. I don't recall the size of the pump off the top of my head, but I believe it is 3 HP with about 33 CFM. We run 750' of 1 1/2" line to the releaser. Then we run nearly 2000' of mainline which is primarily 1" with some 3/4" lateral mains. We have two ladders (1 8' and 1 12') in the system. I don't recall all the max specs. Search the archives, that is where I found a lot of knowledge here. I believe the 1 1/2" has quite a capacity. Do it once and do it right. I felt the more storage of "air" I had the better the ladders would run and the easier it would handle any changes. I am at about 26" vac. I can tell when there is a loss from a couple loose saddles or about 5 taps. It doesn't drop when one tape is hanging free because you missed it during tapping. Walk your lines to make sure everything is tight.

Mike

[rhwells2003]

I have a gast 1550 run off a gas motor behind my shed. My releaser and tank is at the bottom of my driveway probably 400' away. The releaser and pump are connected with a black 1" line. I have 24-25" at my releaser, and 22-23" at the end of my four 1" mains (which are 2000' away from my releaser). When my releaser dumps the other side is up to vac and taking sap 5 seconds later.

I would think you'd be fine with a 1" or a 1.25" dry line connecting the two.

[Atgreene]

Would you buy another gast? Local maple dealer questions their ability to maintain high vacuum w/o overheating. This is all new to me, but the gast has more cfm, is 220v and new vs used leader flood, 110v, less cfm.

[Thompson's Tree Farm]

Would you buy another gast? Local maple dealer questions their ability to maintain high vacuum w/o overheating. This is all new to me, but the gast has more cfm, is 220v and new vs used leader flood, 110v, less cfm.

Don't think overheating will be a problem. They are used in the printing industry where they run 24/7 at high vacuum

[MT Pockets Producer]

Would you buy another gast? Local maple dealer questions their ability to maintain high vacuum w/o overheating. This is all new to me, but the gast has more cfm, is 220v and new vs used leader flood, 110v, less cfm.

We ran our first Gast last year (1550) and bought another this year to replace a smaller ac vac pump unit we were using. Can't speak about long distances between the pump and releaser but can say we were very pleased with the pump. It Would get warm but did not overheat and pulled 26" consistently. Did a lot of research on the forum before buying last year and everyone using them seems to be very satisfied. Something else I like about them is they are simple. We keep a rebuild kit on hand and if one went down we could have it rebuilt and back in service within a few hours.

[Atgreene]

Still looking at options. Bought the mini flood and a Bernard double releaser, looks like I can get 400-500 taps tied into the system. We have 6 different culvert crossings with 5 different lines, but I think we can do it.

I'm going to start out on generator initially, get the vac up and working then deal with where to run it to or from once we're all tapped.

[Russell Lampron]

I have a Surge SP22 vacuum pump and a Lapierre horizontal mechanical releaser that is good for 8000 taps. I only have 750 taps on it but I got a good deal on the releaser. The releaser is 1500' away from the vacuum pump. I have a 1 1/4" pipe to supply vacuum to the releaser. I can easily maintain 26" to 27" of vacuum when the system is tight. The only issue is that the recovery time after the releaser dumps is a little slow. That could be fixed with a larger supply line or a bigger vacuum pump. I used 1 1/4" pipe because that is the size of the fitting at the pump.

[wiam]

I have a Surge SP22 vacuum pump and a Lapierre horizontal mechanical releaser that is good for 8000 taps. I only have 750 taps on it but I got a good deal on the releaser. The releaser is 1500' away from the vacuum pump. I have a 1 1/4" pipe to supply vacuum to the releaser. I can easily maintain 26" to 27" of vacuum when the system is tight. The only issue is that the recovery time after the releaser dumps is a little slow. That could be fixed with a larger supply line or a bigger vacuum pump. I used 1 1/4" pipe because that is the size of the fitting at the pump.

I see the same issue with recovery. Have been wondering if some sort of vacuum resovoir at the releaser would help this.