Gate valves and valves. The same should share in the open state of the full flow area and require no short bends of the creek, the controls must not require too much effort. for more
Lines (main lines) and their branches are most commonly used slides,
for pipes of smaller internal widths (lateral lines) gives you the advantage of valves. Embodiments see Fig.
For larger diameters of the resistance movement of valves and gate valves in high pressure lines by single-sided printing is very large. There are in this case
special relief valves arranged in which the large valve or slide
be built (see fig) or arranged separately with a special recirculation line.