Advantages And Disadvantages Of Butterfly Valves And Gate Valves

Differential pressure: Gate valves are usually much better than butterfly valves when executed under pressure. Their building structure shows that the flow can continue without producing any kind of unnecessary pressure changes. And their use is not very proactive.

This is not the case with butterfly valves. Their revolving gate structure shows that the holding gate bears a greater pressure difference. This is equivalent to the need for greater toughness to operate a butterfly valve. This is usually solved by using a larger butterfly valve with a long arm.

Wear and tear: Gate valves are often better than butterfly valves in terms of service life. The actual style of this valve ensures that it will not be subjected to high pressures like a butterfly valve during operation. Although modern butterfly valves have higher stress resistance, unfortunately, their design ensures a higher wear price. Unlike gate valves, no matter whether the valve is open or closed, its seal is always directly exposed to the flow. When opened, parts of the gate valve are revealed to flow for really short ruptures of time.

Safety: This depends on the use of the valve and the pressure it may encounter. A knowledgeable designer who recognizes what these valves can and cannot do can completely prevent this problem. Nevertheless, it is necessary to understand and recognize that butterfly valves were not originally designed to handle high-speed cycles. Of course, 6m/s is the best flow rate recommended for this valve. Anything above the above will subject the butterfly valve to a dangerous stress difference, which will increase wear and may lead to early failure and collapse.

High-pressure drop: Another problem that affects the butterfly valve is the drop in pressure when it is released. Nowadays, in order to save electricity, the entire system must maintain high pressure, which is one of the reasons why gate valves and other alternatives have become popular again.

Price: Butterfly valves are often cheaper than gate valves.

Size: The butterfly valve is smaller and smaller. Generally, this makes them much more flexible in use than gate valves.

These two valves are destined to be used as a channel flow, not as a regulating valve. Both are not developed and utilized. Once they are released, the flow is out of control.