Siphon tanks can be placed adjacent to the gutter being flushed, so there are no traffic obstructions. Siphon tanks can be constructed of materials that will not deteriorate in the harsh environment. In dairy operations, tank construction materials may include concrete, PVC, stainless steel, see Figure 3, or fiberglass. These materials can be expected to last as long as the facility is used. Water pressure from the siphon tank raises a steel lid to allow water to flow down the flush alley.
Siphon tanks are highly reliable.
If properly designed and installed, the tanks operate with little or no maintenance. Because there are no moving parts to wear out, siphon tanks can provide trouble-free operation over a long period of time. Siphon tanks also have some disadvantages, relative to other types of flushing devices commonly used in dairy operations. Design and construction are critical for proper operation. Siphons must be precisely designed and accurately installed.