What happens to the low in and high out of the valve, and what is the name of the low in and high ou

The shut-off valve will always be carried when the packing is reversed, and it is generally not relevant. If the control valve is reversed, it will affect the use.

When the pressure is too high, it is easy to leak from the packing.

This should be the same as drinking water upside down.

Shut-off clearance valveLow in and high out, the flow resistance becomes smaller, and the opening of the valve is more labor-saving. When the valve is closed, the gasket between the housing and bonnet and the packing around the stem are not stressed, resulting in a long service life and reduced leakage. The valve is closed, and the packing is replaced or added for easy maintenance.

Of course, not all globe valves are low-inlet and high-output, and some large-diameter high-pressure globe valves are high-feed.

There are two shut-off valves in series on the bypass pipeline, and the second shut-off valve requires high inlet and low answer. Large-diameter high-pressure globe valve, due to the poor sealing performance of large-diameter valves, the use of high-inlet and low-output globe grinding valves in the closed state, the medium pressure acts on the valve disc, which can increase the sealing performance of the valve.

Shut-off valves. The globe valve, also known as the shut-off valve, is a kind of shut-off valve, which can be divided into flange connection according to the connection method.

Threaded connection and welded connection. In general, the flow direction of the shut-off valve is top-down, so the installation is directional. These valves have a relatively short stem opening or closing stroke, have a very reliable shut-off function, and the change in the seat port is proportional to the stroke of the disc.

It is also suitable for the regulation of the flow rate.

Generally, it is low in and high out, so that the unbalanced force will be smaller, but the wear caused by the fluid to the valve core will be greater than that of high in and low out

Although there is pressure in the cavity and the force on the packing, there is a certain influence, but the closing force is much smaller, but there are advantages and disadvantages, and the force is very large when opening, but the closing force is still smaller than that when the low in and high out is (because there is no sealing force on the sealing surface).

High-pressure valves have been widely used in superhard material manufacturing, chemical industry, petrochemical industry, processing technology, isostatic pressure treatment, ultra-high static pressure extrusion, powder metallurgy, metal forming, geophysics, geology research and other fields. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, slurries, oils, liquid metals and radioactive media. The opening and closing part is a disc-shaped valve plate, which rotates around its own axis in the valve body, so as to achieve the purpose of opening and closing or adjusting.

The high in and low out of the study is mainly determined by the valve structure, to prevent the valve from being in a closed state, the sealing device of the valve stem is still in a high pressure state, but also for the use of the valve is more convenient (light operation) and service life.

Medium and high pressure globe valves often adopt the high inlet and low outlet, which reduces the stress burden of the valve stem and disc, and facilitates the valve disc to better close the valve under its own pressure, and the design of the valve is convenient for the opening of the disc.

Low-in, high-out valves are often referred to as globes. We can also call it a shut-off valve. The high-pressure medium flows through the bottom inlet to the high-step outlet, creating a differential pressure effect.

Plays a role in depressurizing. Therefore, this kind of valve disc and valve seat need to be butt welded with a very thick STL material, which must be washout resistant. Choose a material with good red hardness.