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Category: Pumps

Voice from Past as the Maple Syrup Season Slows

In maple sugaring, the equipment that claims the cruelest name is the “extractor,” a device that sounds like it preys on maple trees. What it really does is separate out the sap flowing down toward a vacuum system and puts it into a storage tank without interrupting the flow of vacuum to the tree. [The […]

How Not to Test a Sap Transfer Pump

That column of water on the left is hitting the ceiling and showering down all over the vacuum room. I had the clever idea to test to see if I’d hooked up the correct plugs by flicking the sap extractor’s electronic trigger. Well, it worked to show me the plug was in the wrong place. […]

Vacuum “Catastrophe” Averted

We turned on the vacuum over at the re-done bush in Strafford yesterday evening. It involved a lot of last-minute plumbing into the evening. When it went on: only about 8 or 9 bars of mercury. That’s a little less than half of the desired level of vacuum. [Installing a saddle (interface between lateral line […]


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