Close up of the T piece and clear hose from the top. The valve can just be seen.

415 × 529 Pumps, siphons and inventions
Close up of the T piece and clear hose from the top. The valve can just be seen.

Close up of the T piece and clear hose from the top. The valve can just be seen.

Close up of the T piece and clear hose from the top. The valve can just be seen.