How to Install Sanitary Valves

Sanitary cut-off valve, throttle valve, pressure relief valve, check valve, and so on, if reverse, it will affect the use of effect and life, or do not work at all, or even cause danger. A general valve has a direction sign on the valve body. If not, it should be correctly identified according to the working principle of the valve.

The valve cavity of the shut-off valve is asymmetrical, and the fluid should let it go through the valve mouth from the bottom to the upper, so that the fluid resistance is small, the power saving is opened, the media is closed after closing and the packing is easy to be overhauled. This is why the cut-off valve can not be safe and reverse. Other valves also have their own characteristics.

The installation position of globe valves must be convenient for operation, even if the installation is temporarily difficult, but also for the operator's long-term workers. It is best to get the valve hand wheel and the chest together, so that the opening and closing valves are more economical. The landing wheel should be upwards and not tilted, so as to avoid any awkward operation. Rely on the wall machine rely on the valve of the equipment, also need to leave the operator to stand room. To avoid operating in the sky, especially acids and alkalis, toxic substances, etc., otherwise, it is very unsafe. Do not flip the gate, otherwise, the medium will remain for a long time cover space, easy to corrode the stem, and some process requirements are taboo. It is very inconvenient to replace the filler at the same time. The gate valve should not be installed underground, otherwise, it will corrode the exposed stem because of the humidity. Lift check valve should be installed to ensure that the disc is vertical, so that it can move up and down flexibly. Swing sanitary check valve should be installed to ensure that its pin is horizontal, so that it can be screwed up flexibly. The pressure relief valve should be erected vertically on the horizontal pipe and not tilted in all directions.

The flow path of the valve is straight through, and its flow resistance is small. The valve is generally chosen as the cut-off and closing medium. Downward closed valves (globe valves and plunger valves) are less selective because their flow resistance is higher than that of other valves. It is promising to have a high flow resistance, and closed valves can be selected.

Mastering the valve used for flow usually takes it is easy to adjust and control the flow. Downward closed valves, such as globe valves, are suitable for this purpose because their seat sizes are inversely proportional to the distance of the open piece. The winding valve and the flexible valve can also be used for the control of the dieting, but generally, it can only be used in the scope of unlimited valve caliber. The gate valve is a circular sluice gate for the round valve seat. It can master the flow better as long as it is on the verge of opening.

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