The trick is getting hose that's flexible enough to bend 180 degrees to get the end back to the neck of the bottle when upside down, and have that hose be resistant to a wide variety of chemicals. Although, you could make a simple ball valve that opened an orifice in/near the neck when the bottle was inverted. Interesting...
Awemaker
#1 – 2:42 PM April 16, 2009
Uhh, why not just remove the tube and spray upside down all day?
nutbastard
#2 – 2:55 PM April 16, 2009
@#1
from the link:
"A weight at the end of the flexible intake tube always follows the liquid, ensuring good flow to nearly the last drop."
Seems to me this would be pretty trivial to reproduce, and it does have the advantage of working both ways...
Scuba SM
#3 – 7:05 PM April 16, 2009
The trick is getting hose that's flexible enough to bend 180 degrees to get the end back to the neck of the bottle when upside down, and have that hose be resistant to a wide variety of chemicals. Although, you could make a simple ball valve that opened an orifice in/near the neck when the bottle was inverted. Interesting...