WHY CAN'T THE GATE VALVE BE FLIPPED UPSIDE DOWN?

We are an Industrial Valves Manufacturers, and Globe Valves is one of our products. Let me explain to you why gate valves cannot be flipped upside down?

　　Globe valve, throttle valve, pressure reducing valve, check valve and other valves all have directionality. If the throttle valve is installed upside down, it will affect the use effect and life. Back valves can even be dangerous. Generally, the valve has a direction mark on the valve body; if not, it should be correctly identified according to the working principle of the valve.

　　The valve cavity of the globe valve is asymmetrical, and the fluid should pass through the valve port from bottom to top, so that the fluid resistance is small (determined by the shape), and the opening is labor-saving (because the pressure of the medium is upward), and the medium does not press the packing after closing, which is convenient for maintenance. . This is the reason why the globe valve cannot be reversed. Other valves also have their own characteristics. The installation position of the valve must be convenient for operation; even if the installation is temporarily difficult, the long-term work of the operator must be considered.

　　It is best to align the valve handwheel with the chest (usually 1.2 meters away from the operating floor), so that it is easier to open and close the valve. The handwheel of the landing valve should be upward, not inclined, so as to avoid awkward operation. The valve of the machine against the wall should also leave room for the operator to stand. It is necessary to avoid operation in the sky, especially acid and alkali, toxic media, etc., otherwise it is very unsafe.

　　The gate valve should not be installed upside down (that is, the handwheel is downward), otherwise the medium will remain in the bonnet space for a long time, which is easy to corrode the valve stem, and is prohibited by certain process requirements. It is extremely inconvenient to replace the packing at the same time.

　　1. The pressure reducing valve should be installed upright on the horizontal pipeline, and should not be inclined in all directions.

　　2. For the lift check valve, ensure that its disc is vertical during installation, so that it can be lifted flexibly.

　　3. For swing check valve, ensure that its pin shaft is level during installation, so that the swing can be flexible.

　　4. The rising stem gate valve should not be installed underground, otherwise the exposed valve stem will be corroded due to humidity.

　　Ball Valves is also one of our products, welcome to our website!