Anyone out there seen one of these in use ?
One of our local dealers has posted this picture of an air injector for a sap ladder with the following comments
"Another genuine BERNARD innovation! This ingenious device when used with a check valve, periodically allows a burst of air into the line just ahead of a sap latter (not included) allowing the sap to travel up the ladder quickly and easily. Fully adjustable for air volume and opening/closing frequency. Complete with check valve"
It looks to me like it uses the same kind of cylinder/valve as the Bernard mechanical releaser to release a gulp of air into the tube to push the sap up the ladder tubes.
They're offering it at $ 279, Canadian $